Salicylates in Perfumery: A Guide to Methyl, Hexyl, Benzyl and Isoamyl | Part 2

Written By Giuseppe Coglienti
Red berries and glossy evergreen leaves on forest moss, opening image for a guide to the principal salicylates in perfumery

Red berries among evergreen leaves on a Carpathian forest floor. Like the salicylates, many forms grow from a single shared foundation.

Part 2 of 4 — The Salicylate Series

Four salicylates, four different roles. From methyl salicylate’s wintergreen character to benzyl salicylate’s discreet floral background.

Meet the Salicylate Family

In our introduction to salicylates, we explored the shared chemistry and perfumery roles of this family. This second article examines methyl, hexyl, benzyl and isoamyl salicylate individually: their olfactory character, documented properties, applications and regulatory context.

These four materials illustrate the range within the salicylate family. Methyl salicylate brings a recognisable wintergreen character; hexyl offers a green-floral direction; benzyl contributes a discreet balsamic-floral background; and isoamyl combines sweet, herbaceous-green and floral effects. Their shared chemistry does not make them interchangeable (Arctander, 1969, entries 218, 340, 1680 and 2241).

The useful questions are practical: what does each material contribute to an accord? Which properties are documented, and which depend on the formulation? How do the intended product and destination market affect its use?

Concentrate, Finished Product and Regulatory Scope

A dosage in a fragrance concentrate is not a concentration in the finished consumer product. A concentrate containing 10% of a material and incorporated at 15% contributes 1.5% of that material to the finished product. IFRA maximum acceptable concentrations refer to the relevant finished-product category; they are not suggested creative dosages or a complete assessment of legal compliance and safety (International Fragrance Association [IFRA], 2023). The regulatory sections below distinguish published substance standards from EU cosmetics legislation.

Methyl Salicylate: The Intense Medicinal Modifier

CAS Number: 119-36-8

Molecular Formula: C₈H₈O₃

Molecular Weight: 152.15 g/mol

IUPAC Name: methyl 2-hydroxybenzoate

Methyl salicylate has an immediately recognisable wintergreen character, familiar from root beer, confectionery and medicinal preparations. Beneath those associations lies a warm, sweet, rooty-fruity profile with useful connections to rich floral accords. It is a characterful modifier rather than a softer floral background material (Arctander, 1969, entry 2241; Scentspiracy, n.d.-c).

Olfactory Profile and Character

Arctander describes its odour as warm, sweet and rooty-fruity, with moderate to poor tenacity. The distinction matters: a recognisable smell need not be the most persistent element in a composition (Arctander, 1969, entry 2241).

The familiar “minty” description has a cultural dimension. Arctander connects it with learned associations from confectionery and dentifrice, noting that interpretations differ across markets. Chemically, methyl salicylate is neither menthol nor a mint oil (Arctander, 1969, entry 2241).

Technical Properties and Performance

Physical characteristics: Arctander reports a colourless oily liquid, melting at −9 °C, boiling at 223 °C and with specific gravity 1.18, without stated measurement conditions. These are historical reference data rather than current batch specifications (Arctander, 1969, entry 2241).

Supplier reference data: Sigma-Aldrich lists a boiling point of 222 °C, melting range of −8 to −7 °C and density of 1.174 g/mL at 25 °C. These are literature values in its reference-standard listing, rather than batch-specific measurements (Sigma-Aldrich, n.d.-c).

Volatility and persistence: Evaluate methyl salicylate for its contribution throughout the accord’s development, not only its recognisable opening. Arctander’s moderate-to-poor tenacity description provides a useful qualitative reference; boiling point and molecular weight alone do not determine perceived persistence (Arctander, 1969, entry 2241).

Natural occurrence: Wintergreen leaves and sweet birch bark are sources of methyl salicylate. Natural wintergreen oil can vary in composition, so it should be identified and assessed as the commercial material supplied, rather than automatically equated with pure methyl salicylate (Scientific Committee on Consumer Safety [SCCS], 2021b).

Metabolic pathway: The SCCS describes hydrolysis to salicylic acid and methanol and discusses how exposure route and metabolism affect systemic concentrations. Fragrance, oral and medicinal exposure are therefore not interchangeable assessment contexts (SCCS, 2021b).

Applications and Usage

Fine fragrance: Arctander documents minor use in tuberose, cassie and artificial ylang-ylang, with traces supporting other floral notes and fougère effects (Arctander, 1969, entry 2241). For creative trials, consider medicinal brightness or salicylate contrast in ambery, traditionally “Oriental”, tobacco and rich floral sketches.

Flavour applications: Arctander describes extensive historical flavour use, including root beer, wintergreen, fruit flavours, confectionery and dentifrice. The FEMA library lists methyl salicylate as FEMA 2745, JECFA 899 (Arctander, 1969, entry 2241; Flavor and Extract Manufacturers Association [FEMA], n.d.-c). Historic use levels in the book are not contemporary dosage recommendations, and a fragrance-grade product is not automatically a food-grade ingredient.

Blending directions: Explore eugenol for a medicinal-spicy direction, vanillin for sweet warmth, heliotropin for a powdery effect, or tobacco absolutes for a rooty, rich setting. Tuberose and ylang-ylang offer floral contexts consistent with Arctander’s documented applications. In delicate florals and citrus accords, compare small additions carefully to preserve the intended balance (Arctander, 1969, entry 2241).

Safety Warning and Regulatory Status

IFRA status: No substance-specific standard for methyl salicylate (CAS 119-36-8) was identified in the complete IFRA Standards collection through the 51st Amendment, checked on 19 October 2026. This absence does not establish unrestricted use or replace legal compliance and a finished-product safety assessment (IFRA, n.d.).

EU cosmetics restrictions: Commission Regulation (EU) 2022/1531 introduced methyl salicylate into Annex III, entry 324, following its classification as a category 2 reproductive toxicant. The entry introduced differentiated limits, including 0.6% in hydroalcoholic-based fragrances; that figure must not be transferred to other product categories (European Commission, 2022a). The current consolidated entry and applicable age/product conditions must be checked for an operational assessment.

Safety assessment must address the intended finished product and exposure. Natural origin, an olfactory dosage or compliance with one limit cannot establish the safety of the complete formulation (SCCS, 2021b).

For olfactory context and the material’s perfumery profile, see our methyl salicylate ingredient page. Use the applicable primary regulatory documents for compliance decisions.

Hexyl Salicylate: The Versatile Green-Floral Harmonizer

CAS Number: 6259-76-3

Molecular Formula: C₁₃H₁₈O₃

Molecular Weight: 222.28 g/mol

IUPAC Name: hexyl 2-hydroxybenzoate

Hexyl salicylate offers a soft green-floral and sweet-herbaceous direction, connecting floral body with dry, leafy freshness. Its applications extend from fine fragrance to cosmetics, toiletries, household cleaners and detergents (Arctander, 1969, entry 1680; Lapczynski et al., 2007).

Olfactory Profile and Character

Arctander describes a very faint, sweet-herbaceous and floral odour, with dry, bark-like green undertones sometimes compared with witch hazel. Refinement matters: less refined grades can show phenolic, ink-like or metallic off-notes, whereas pure material has a distinctly floral character (Arctander, 1969, entry 1680). Our hexyl salicylate profile adds azalea, leafy and fruity associations to this sensory vocabulary (Scentspiracy, n.d.-b).

Its interest in an accord lies in the interplay of floral softness, green freshness and herbaceous character. White-floral, fougère and green compositions each provide a different setting in which to explore that balance.

Technical Properties and Performance

Physical characteristics: Arctander reports a colourless oily liquid, a boiling point of 290 °C and specific gravity of 1.04; measurement temperature and pressure are not stated in the entry. The review by Lapczynski et al. reports vapour pressure below 0.001 mmHg at 20 °C (Arctander, 1969, entry 1680; Lapczynski et al., 2007).

Modern reference data: The final SCCS opinion reports density 1.038 g/cm³ at 20 °C, boiling point 297.84 °C at 100.62 kPa and vapour pressure 7.7 × 10⁻⁵ kPa at 23 °C. Symrise lists a boiling point of 298 °C without a pressure in its ingredient sheet. Sigma-Aldrich separately lists 290 °C and density 1.04 g/mL at 25 °C as literature values. These figures should retain their source and measurement conditions rather than being merged into a single specification (SCCS, 2024b, section 3.1.8; Sigma-Aldrich, n.d.-b; Symrise, n.d.-d).

Water solubility: Lapczynski et al. (2007) report a calculated value of 6.084 mg/L at 25 °C and calculated log KOW of 5.06. The later SCCS opinion reports water solubility of 2 mg/L at 23 °C and pH 7, and log Pow of 5.5 at 30 °C and pH 7 (OECD TG 117). Keep these datasets separate: their methods and conditions differ. They describe a lipophilic material, but do not quantify deposition on cotton, retention on skin or fragrance release during drying (SCCS, 2024b, sections 3.1.6–3.1.7).

Stability and intended application: Storage stability and stability in a formulated product are separate questions. The SCCS records the applicant’s statement that hexyl salicylate is stable under recommended storage conditions; this does not establish resistance to hydrolysis in an alkaline detergent (SCCS, 2024b, section 3.1.9). Evaluate detergent stability and textile performance in the intended base. The Symrise sheet describes a floral-green profile and physical properties, without quantitative alkaline-stability or textile-blooming results (Symrise, n.d.-d).

Applications and Usage

Fine fragrance: Arctander identifies carnation, fougère and chypre effects, as well as use as a modifier for amyl salicylate or a variation in floral and herbaceous-floral compositions. He emphasises that hexyl and amyl salicylate are not substitutes (Arctander, 1969, entry 1680). Other directions to explore include hyacinth, jasmine and orchid reconstructions, contemporary lavender–coumarin structures, and marine ideas involving calone or other ozonic materials.

Functional fragrance: Household cleaners and detergents, cosmetics and toiletries are documented application areas (Lapczynski et al., 2007). Laundry detergents, fabric softeners and dish liquids offer distinct formulation contexts: assess olfactory performance and stability separately in each. A “clean” smell is a sensory direction, not evidence of cleaning efficacy.

Blending directions: Arctander highlights labdanum, coumarin, lavender oils and rosemary. He describes excellent tenacity and an odour that becomes more fully perceptible alongside more volatile components (Arctander, 1969, entry 1680). Extend the study to benzyl and isoamyl salicylate, ionones, galbanum, violet leaf absolute, vetiver, woody materials and hydroxycitronellal. Compare the resulting floral, green and woody balances rather than expecting identical effects in every accord.

Regulatory Status and Safety

Published IFRA substance standard: The 2020 Amendment 49 standard specifies 6.5% for category 4, 1.2% for category 10A and 0.10% for both categories 11A and 11B, in the finished product (IFRA, 2020b). Category 11 is not a general label for laundry products: IFRA distinguishes household-care categories from products involving minimal fragrance transfer from an inert substrate (IFRA, 2023). These values are not a comparative ranking of safety.

EU cosmetics restrictions: Commission Regulation (EU) 2026/78, applicable from 1 May 2026, added Hexyl Salicylate to Annex III, entry 380. It specifies 2% in the defined hydroalcoholic fragrances, 0.5% in rinse-off products and 0.3% in leave-on products, subject to the product and age exceptions in the entry. Toothpaste and mouthwash have a 0.001% limit. For a relevant EU hydroalcoholic cosmetic fragrance, the 2% legal restriction must not be replaced by the higher category 4 IFRA figure. The regulation also identifies its category 2 reproductive-toxicity classification (European Commission, 2026). Individual allergen labelling, hazard classification and cosmetic-use restrictions are distinct questions.

Children’s products: Entry 380 specifies 0.1% for the expressly listed shower/bath, hand-wash, shampoo, conditioner, skin-care, lip and fragrance products intended for children below three. Use below that age is restricted to the stated exceptions, including toothpaste at its own limit. The SCCS addendum considers damaged skin, sensitisation and possible salicylic acid impurities or breakdown products; it does not cover sprayable products that may expose the lungs (European Commission, 2026; SCCS, 2024a).

Benzyl Salicylate: The Discreet Balsamic-Floral Background

CAS Number: 118-58-1

Molecular Formula: C₁₄H₁₂O₃

Molecular Weight: 228.25 g/mol

IUPAC Name: benzyl 2-hydroxybenzoate

Benzyl salicylate illustrates the difference between an individual smell and a role within a composition. Arctander describes it as very faint, sweet-floral and slightly balsamic. Some evaluators, including perfumers, find it odourless, while others describe a musky character; he also notes that trace impurities can strongly influence the smell (Arctander, 1969, entry 340).

That subtlety is part of its compositional interest. Arctander emphasises benzyl salicylate’s role as a blender and mild floral background, with an effect comparable in some respects to ylang-ylang, but different in power and top note (Arctander, 1969, entry 340).

Olfactory Profile and Character

Our benzyl salicylate profile adds tropical associations: coconut, frangipani, monoï and sunscreen. In the perfumer’s note, Fulvio Ciccolo emphasises trained evaluation and a meaningful contribution within a formula (Scentspiracy, n.d.-a). These references describe an olfactory impression, not sun-protection performance.

In an accord, its discreet background can help stronger floral materials read as a more integrated whole. The perfumer’s terms “smoothing” and “rounding” describe that sensory result, rather than a single demonstrated chemical mechanism.

Technical Properties and Performance

Physical characteristics: Arctander reports a colourless oily liquid or opaque crystalline mass melting at 24–26 °C, which may remain supercooled for a considerable time. The entry gives specific gravity 1.18 and boiling point 300 °C without stated measurement conditions. These historical values are not a current product specification (Arctander, 1969, entry 340).

Supplier reference data: Sigma-Aldrich lists a boiling range of 168–170 °C at 5 mmHg and density 1.176 g/mL at 25 °C as literature values. A reduced-pressure boiling range cannot be compared directly with a boiling point reported without pressure (Sigma-Aldrich, n.d.-a).

Solubility and solvent behaviour: Arctander reports near-insolubility in water, insolubility in glycerin, poor solubility in propylene glycol, and solubility in alcohol and oils. These distinctions are useful when choosing a carrier system; compatibility still needs to be checked in the complete formula (Arctander, 1969, entry 340).

Applications and Usage

Fine fragrance: Arctander highlights applications across florals, particularly carnation and wallflower. Jasmine, frangipani and ylang-ylang feature in our ingredient profile, while tuberose offers a further rich-floral direction to explore (Arctander, 1969, entry 340; Scentspiracy, n.d.-a). Our accord versus base article provides related context for building an integrated floral idea from individual materials.

Beyond floral accords, explore tropical bases, chypre foundations involving oakmoss and patchouli, ambery or traditionally “Oriental” compositions, and marine sketches involving calone. The useful question is how the balsamic-floral background changes the balance of each composition.

Blending directions: Compare indolic materials associated with jasmine and orange flower, creamy-peachy lactones, ylang-ylang oil, tuberose absolute, sandalwood, ambroxan and other ambery materials. For tropical florals, evaluate whether the addition creates the desired warmth and a smoother relationship with indolic facets.

Regulatory Status and Safety

Published IFRA substance standard: The 2020 Amendment 49 standard specifies 7.3% in the finished product for category 4 (IFRA, 2020a). A concentrate containing 10% benzyl salicylate, used at 15% in the finished perfume, contributes 1.5%. This calculation establishes that contribution, not the compliance or safety of the complete product. Contributions from other sources must also be considered where relevant.

Allergen declaration: Benzyl salicylate is subject to individual fragrance-allergen labelling above 0.001% (10 ppm) in leave-on products and 0.01% (100 ppm) in rinse-off products. Regulation (EU) 2023/1545 expanded individual labelling to 56 additional allergens. Since 31 July 2026, products that do not meet the new requirements may no longer be placed on the EU market; products placed on the market beforehand may continue to be made available until 31 July 2028 under the transitional conditions (European Commission, n.d.-b).

Flavour reference: The FEMA library lists benzyl salicylate as FEMA 2151, with JECFA number 904 (FEMA, n.d.-a). Arctander specifically contrasts its mild odour with a quite powerful taste, describing trace use in apricot, banana, peach, plum and floral flavour compositions (Arctander, 1969, entry 340). A historical use description or FEMA reference is not a blanket authorisation for every concentration, jurisdiction or commercial grade.

Isoamyl Salicylate: The Classical Fougère Cornerstone

CAS Number: 87-20-7

Molecular Formula: C₁₂H₁₆O₃

Molecular Weight: 208.26 g/mol

IUPAC Name: 3-methylbutyl 2-hydroxybenzoate

Arctander lists iso-pentyl salicylate and notes that amyl salicylate is its most common name in the trade. The branched structure and CAS identity distinguish it from other possible amyl isomers. He documents extensive floral and non-floral applications, especially fougère types (Arctander, 1969, entry 218; National Institute of Standards and Technology [NIST], n.d.).

Olfactory Profile and Character

Arctander describes a sweet, herbaceous-green and slightly floral odour with strong tenacity and sweet, woody-earthy dryout notes. Refined qualities may show richer sweetness and floral tones (Arctander, 1969, entry 218).

Sweet hay, clover, orchid and herbaceous-garden associations provide a useful vocabulary for exploring this profile; clover and orchid are also application directions named by Arctander. In an accord, the sweet-herbaceous character offers a bridge between lavender or rosemary and coumarin, tonka or vanilla. Adjust the balance to retain the desired freshness and avoid excessive sweetness (Arctander, 1969, entry 218).

Technical Properties and Performance

Physical characteristics: Arctander reports a colourless oily liquid, boiling point 277 °C and specific gravity 1.06 without stated measurement conditions. Its molecular weight is lower than those of both hexyl and benzyl salicylate; molecular weight alone does not establish an evaporation ranking (Arctander, 1969, entry 218; NIST, n.d.).

Tenacity and olfactory placement: Its sweet, woody-earthy dryout makes isoamyl salicylate useful when the herbaceous-floral idea needs to persist into the later development of an accord. Arctander’s description is qualitative: it does not quantify persistence relative to benzyl salicylate or an effect on the evaporation of other ingredients (Arctander, 1969, entry 218).

Applications and Usage

Fougère compositions: Arctander identifies frequent use in fougère types, as well as carnation, hyacinth, orchid and clover compositions (Arctander, 1969, entry 218). In the lavender–coumarin–oakmoss context discussed on our coumarin page, its sweet-herbaceous direction offers a compositional bridge between aromatic freshness and a sweeter drydown.

Herbaceous-floral perfumes: Explore lavender soliflores, herbal colognes, aromatic fern effects and green-floral compositions. Use the contrast between sweet-floral depth and herbaceous facets to shape the accord’s balance.

Soap accords: Lavender, coumarin and a sweet-herbaceous salicylate offer a classical soapy direction. Treat that olfactory effect separately from stability in an actual soap base, which requires application testing.

Chypre directions: Against the drier character of oakmoss and patchouli, explore isoamyl salicylate as a sweet-floral modifier.

Blending directions: Compare lavender oils, coumarin and tonka, rosemary, vetiver, cedarwood, oakmoss-type bases and other woody-aromatic materials. Mixtures with hexyl and benzyl salicylate offer a way to study the balance between green freshness, sweet-herbaceous warmth and a discreet balsamic background.

Regulatory Status and Safety

IFRA status: No substance-specific standard for isoamyl salicylate (CAS 87-20-7) was identified in the complete IFRA Standards collection through the 51st Amendment. IFRA’s announcement of 31 August 2026 states that the proposed isoamyl salicylate standard is postponed to the next regular Amendment after the 52nd. A proposed standard must not be treated as an implemented restriction, and the absence of a specific standard does not establish unrestricted use (IFRA, n.d., 2026).

Flavour reference: The FEMA library lists CAS 87-20-7 as FEMA 2084, with JECFA number 903 (FEMA, n.d.-b). Arctander describes occasional use in root-beer and fruit flavours, at trace levels in his historical account. Neither reference establishes safety at an arbitrary concentration or for every route of exposure (Arctander, 1969, entry 218).

Historical Significance

By the time of Arctander’s account, isoamyl salicylate was an established perfume chemical, widely used in floral and fougère compositions (Arctander, 1969, entry 218). Its place in this repertoire illustrates the broader relationship between synthetic materials and fragrance structures explored in our De Laire bases article.

Comparative Overview: Choosing the Right Salicylate

Start with the role the accord needs: a recognisable modifier, green-floral softness, sweet-herbaceous persistence or a discreet floral background. Then assess impact, drydown, application performance and regulatory conditions as separate dimensions.

Olfactory character:

  • Methyl: Wintergreen, warm, sweet and rooty-fruity; familiar medicinal associations.

  • Hexyl: Faint sweet-herbaceous and floral, with dry, bark-like green undertones.

  • Isoamyl: Sweet herbaceous-green, slightly floral, with a tenacious woody-earthy dryout.

  • Benzyl: Very faint sweet-floral and slightly balsamic; tropical or sunscreen-like associations in an accord (Arctander, 1969, entries 218, 340, 1680 and 2241; Scentspiracy, n.d.-a).

Volatility and molecular weight: The mass order is methyl, isoamyl, hexyl, benzyl. This is not, by itself, a measured vapour-pressure ranking at a common temperature. Arctander describes methyl’s tenacity as moderate to poor and hexyl and isoamyl as particularly tenacious; impact and persistence should not be conflated (Arctander, 1969, entries 218, 1680 and 2241).

Intensity: Compare samples at stated dilutions and revisit the mixtures during drydown. A recognisable wintergreen effect, the faint floral character of hexyl or benzyl, and the tenacity of isoamyl describe different aspects of perception—not a single strongest-to-weakest scale (Arctander, 1969, entries 218, 340, 1680 and 2241).

Primary applications:

  • Methyl: Minor floral or fougère modifier; wintergreen and medicinal contrasts.

  • Hexyl: Floral, herbaceous-floral, fougère and chypre effects; functional-fragrance applications and exploratory marine directions.

  • Isoamyl: Classical fougère, herbaceous-floral and chypre directions; soapy olfactory effects.

  • Benzyl: Floral blending and backgrounds, including white-floral and tropical directions (Arctander, 1969, entries 218, 340, 1680 and 2241; Lapczynski et al., 2007; Scentspiracy, n.d.-a).

Stability in alkaline conditions: Choose on the basis of tests in the intended base, not a family-wide ranking. Documented storage stability or historical use in detergents does not establish equal resistance to alkaline hydrolysis across these four materials (Lapczynski et al., 2007; SCCS, 2024b, section 3.1.9).

Regulatory comparison: Published IFRA category 4 maxima are 6.5% for hexyl and 7.3% for benzyl in the standards consulted (IFRA, 2020a, 2020b). The relevant EU hydroalcoholic-fragrance restriction for hexyl is 2% (European Commission, 2026). These figures are not suggested dosages or a comparative safety ranking.

Other Salicylates: Perfumery Materials and UV Filters

The family extends beyond these four profiles. For each variant, chemical identity, olfactory role, any UV-related function and applicable restrictions must be considered separately; a salicylate name does not make materials interchangeable.

Ethyl salicylate (CAS 118-61-6; molecular weight approximately 166.17 g/mol): Arctander describes a heavy, sweet, floral-fruity character, milder than methyl salicylate and more cassie-like, with intensely sweet-floral undertones. Documented applications include cassie bases, ylang-ylang, lily and other sweet florals, with traces as a sweetener in fougères. His historical entry reports a colourless oily liquid, melting near 1 °C, boiling at 234 °C, specific gravity 1.13 and FEMA number 2458 (Arctander, 1969, entry 1350).

Symrise’s flavour-ingredient sheet lists CAS 118-61-6, FEMA 2458 and JECFA 900, a boiling point of approximately 234.2 °C and relative density D20/4 of 1.127–1.131. Its taste descriptors include wintergreen, medicinal, sweet and phenolic—useful flavour context, distinct from the odour description used for perfumery (Symrise, n.d.-b).

2-Ethylhexyl salicylate / octisalate (CAS 118-60-5; INCI Ethylhexyl Salicylate): Octisalate’s principal context here is UV filtration. The Commission’s scientific review identifies its UV-filter function; the Commission’s CosIng Annex VI listing identifies it under entry 20 with a maximum concentration of 5% in the ready-for-use preparation. This UV-filter limit is not an IFRA category 4 limit, a general perfumery dosage or a guarantee that a fragrance will be photostabilised (European Commission, n.d.-a; Scientific Committee on Cosmetic and Non-Food Products Intended for Consumers [SCCNFP], 1998).

Cyclohexyl salicylate (CAS 25485-88-5; C₁₃H₁₆O₃; molecular weight approximately 220.3 g/mol): Symrise describes a floral, white-flower, green and carnation profile. Its sheet identifies uses in tiaré, jasmine, tuberose, gardenia and ylang-ylang concepts, rounding melon or watermelon notes, and adding floral transparency or green-vegetable accents. It reports a colourless-to-pale-yellow liquid-to-solid appearance. Use these manufacturer descriptions as directions for an accord study; a replacement for benzyl salicylate would still need to be evaluated in the complete formula (Symrise, n.d.-a).

Homomenthyl salicylate / homosalate (CAS 118-56-9; C₁₆H₂₂O₃; molecular weight approximately 262.34 g/mol): The SCCS lists homomenthyl salicylate as a synonym of homosalate, also named 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate. Its established cosmetic context is UV filtration. The SCCS reports a clear, colourless-to-pale-yellow liquid and a slight mint odour (SCCS, 2021a). Commission Regulation (EU) 2022/2195 restricts its use as a UV filter to face products, excluding propellant sprays, at up to 7.34% in the ready-for-use preparation. The transition for making non-compliant products available ended on 1 July 2025 (European Commission, 2022b).

Cis-3-hexenyl salicylate (CAS 65405-77-8; C₁₃H₁₆O₃; molecular weight approximately 220.3 g/mol): Arctander describes a sweet, slightly green-balsamic, tenacious odour, greener and less floral than hexyl salicylate. His assessment combines moderate power with persistence—another reminder that intensity and tenacity are different qualities. The ester is prepared from cis-3-hexenol and salicylic acid by azeotropic esterification (Arctander, 1969, entry 1628).

His evaluation of a Compagnie Parento sample dated 1966 was not enthusiastic: he found the green-sweet effect insufficiently distinctive and predicted that the material would become obsolete. This is a historical aesthetic judgement, not its present-day market status. Current IFF and Symrise ingredient catalogues offer a different context for evaluating the material (Arctander, 1969, entry 1628; International Flavors & Fragrances [IFF], n.d.; Symrise, n.d.-c).

Symrise describes floral, green, ylang-ylang and frangipani facets, with applications adding body to florals, soft green elements to rose, and green-fruity effects. IFF describes a mild green, very tenacious blending agent for floral-absolute reconstructions. It lists vapour pressure of 0.000336 mmHg at 23 °C and substantivity above 48 hours; the public page does not specify the substrate for that duration, so it is not a universal persistence guarantee (IFF, n.d.; Symrise, n.d.-c).

Application stability is matrix-specific: IFF rates cis-3-hexenyl salicylate stability as good in soap, very good in fabric conditioner, but poor in powder detergent and bleach. Symrise separately describes good olfactory stability in bleach. Because the public descriptions differ and do not define equivalent test bases, they do not support a universal bleach-stability claim. Performance and chemical stability should also be distinguished (IFF, n.d.; Symrise, n.d.-c).

Conclusion: Four Personalities, One Chemical Family

Methyl, hexyl, benzyl and isoamyl salicylate illustrate how related structures can have different olfactory roles: warm wintergreen and rooty-fruity character, green-floral softness, a discreet balsamic-floral background, or sweet herbaceous-green persistence. Their common salicylic-acid foundation does not make them universal fixatives or direct replacements for one another (Arctander, 1969, entries 218, 340, 1680 and 2241).

A useful evaluation asks both what the material contributes to the accord and what evidence supports the intended technical use. Hexyl’s green-floral direction, benzyl’s floral blending role, isoamyl’s fougère context and methyl’s minor floral or wintergreen effects offer different routes. Stability, textile performance and finished-product compliance require their own assessment, rather than being inferred from the smell alone.

In the next article, we'll explore practical formulation guidance—how to actually use these salicylates in compositions, which materials they pair with effectively, common formulation mistakes to avoid, and how to navigate the regulatory landscape that governs their use.

References

Giuseppe Coglienti https://Scentspiracy.com
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Salicylates in Perfumery: Introduction to Chemistry's Hidden Harmonizers | Part 1