Hexyl Cinnamic Aldehyde (HCA)
Aroma Chemical Base Note CAS 101-86-0
A sweet floral jasmine note with a soft waxy green character and a gentle spicy facet. A key building block for jasmine, muguet and tuberose accords, it is also an excellent fixative for floral and oriental compositions.
Odor profile
| Note | Base Note |
| Descriptor 1 | Floral |
| Descriptor 2 | Jasmin |
| Descriptor 3 | Citrus |
| Odor Impact1 | 100 |
| Tenacity1 | 400 h |
1 Source: PerfumersWorld
Identification
| CAS Number | 101-86-0 |
| INCI Name | 2-benzylideneoctanal |
| Category | Aroma Chemical |
| Formula | C15H20O |
| Mol. Weight | 216.32 |
| IUPAC Name | (2E)-2-benzylideneoctanal |
| InChIKey | GUUHFMWKWLOQMM-NTCAYCPXSA-N |
Synonyms
Alpha-hexylcinnamaldehyde, benzylidene octanal, hexyl cinnamal, hexyl cinnamaldehyde, alpha- hexyl cinnamaldehyde, alpha- hexyl cinnamic aldehyde, alpha-N- hexyl cinnamic aldehyde, alpha- hexyl cinnamyl aldehyde, hexyl-3-phenyl-2-propenal, alpha-N- hexyl-beta-phenyl acrolein, jasmonal H, phenyl methylene) octanal, phenylmethylidene)octanal
Physical and chemical data
| Boiling Pointe | 308.07 °C |
| Melting Point | 4.0 °C |
| Flash Pointe | 140.50 °C |
| Density | 0.95 |
| Refractive Index | 1.547 |
| LogP | 4.8 |
| Solubility | insoluble in water; miscible in oils |
| Appearance | Other Solid; CBI; Liquid; Dry Powder; Liquid |
e Estimated from a closely related isomer of the same molecule. Actual values vary by supplier, grade and quality.
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.34 % |
| Category 2 | Deodorants, antiperspirants | 0.53 % |
| Category 3 | Eye products | 0.34 % |
| Category 4 | Fine fragrance | 8.8 % |
| Category 5A | Body lotion | 2.1 % |
| Category 5B | Face cream | 0.34 % |
| Category 5C | Hand cream | 0.43 % |
| Category 5D | Baby creams, oils | 0.11 % |
| Category 6 | Oral care, mouthwash | 0.086 % |
| Category 7A | Rinse-off hair products | 0.34 % |
| Category 7B | Leave-on hair products | 0.34 % |
| Category 8 | Intimate and baby wipes | 0.11 % |
| Category 9 | Soap, shampoo, rinse-off | 2.0 % |
| Category 10A | Household care, hand contact | 0.43 % |
| Category 10B | Aerosol air fresheners | 3.0 % |
| Category 11A | Intended skin contact | 0.11 % |
| Category 11B | Minimal skin contact | 0.11 % |
| Category 12 | No skin contact, candles | 75 % |
| IFRA Amendment | 52 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization And Systemic Toxicity |
EU allergen declaration
| Substance | Share |
|---|---|
| 2-benzylideneoctanal | 100 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.