Dihydrocoumarin
Aroma Chemical Base Note CAS 119-84-6
Sweet, warm with a new mown hay and tonka character and a soft coconut, vanilla facet. It builds hay, tonka and coumarinic accords and rounds fruity, vanilla notes.
Odor profile
| Note | Base Note |
| Descriptor 1 | Tobacco-like |
| Descriptor 2 | Coumarin |
| Descriptor 3 | Coconut |
| Odor Impact1 | 100 |
| Tenacity1 | 38 h |
| Tenacity2 | 228 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 119-84-6 |
| INCI Name | 3,4-dihydrocoumarin, when used as a fragrance ingredient |
| Category | Aroma Chemical |
| Formula | C9H8O2 |
| Mol. Weight | 148.16 |
| IUPAC Name | 3,4-dihydrochromen-2-one |
| InChIKey | VMUXSMXIQBNMGZ-UHFFFAOYSA-N |
Synonyms
Meliotine, Hydroxydihydrocinnamic acid Lactone, O, Hydrocoumarin, Chromanone, benzodihydropyrone, 3,4-Dihydrocoumarin, 4-Dihydro-2H-1-benzopyran-2-one, Nardanol, Toncainol, 4-dihydrocoumarin, melilotin, 2-chromanone, 2-benzodihydropyrone, melilotic lactone, Melilotine, 2H-1-Benzopyran-2-one, 4-dihydro-, Oxochroman, Chroman, 2-oxo-, Dihydrobenzopyrone, benzo dihydro pyrone, benzo dihydropyrone, benzo dihydropyrone natural, benzo dihydropyrone synthetic, 1,2-benzodihydropyrone, benzodihydropyrone FCC, benzodihydropyrone, natural, 2H-1-benzopyran-2-one, 3,4-dihydro-, benzopyranone, dihydro-, 2-oxo-chroman, oxo chroman, chroman-2-one, coumarin, 3,4-dihydro-, coumarin, dihydro-, di hydro coumarin, dihydro coumarin, 3,4-dihydro-1-benzopyran-2-one, 3,4-dihydro-2H-1-benzopyran-2-one, 3,4-dihydro-2H-chromen-2-on
Physical and chemical data
| Boiling Point | 272.2 °C |
| Melting Point | 25.0 °C |
| Flash Point | 130.0 °C |
| Density | 1.169 |
| Refractive Index | 1.5563 |
| Vapor Pressure | 13.4 mmHg at 77 °F ; 19.5 mmHg at 108 °F; 27.4 mmHg at 145 °F (NTP, 1992) |
| LogP | 1.6 |
| Solubility | In water, 3,000 mg/l at 37 °C |
| Appearance | 3,4-dihydrocoumarin is a white to pale yellow clear oily liquid with a sweet odor. Solidifies around room temperature. (NTP, 1992) |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.038 % |
| Category 2 | Deodorants, antiperspirants | 0.011 % |
| Category 3 | Eye products | 0.23 % |
| Category 4 | Fine fragrance | 0.21 % |
| Category 5A | Body lotion | 0.053 % |
| Category 5B | Face cream | 0.053 % |
| Category 5C | Hand cream | 0.053 % |
| Category 5D | Baby creams, oils | 0.018 % |
| Category 6 | Oral care, mouthwash | 0.12 % |
| Category 7A | Rinse-off hair products | 0.43 % |
| Category 7B | Leave-on hair products | 0.43 % |
| Category 8 | Intimate and baby wipes | 0.018 % |
| Category 9 | Soap, shampoo, rinse-off | 0.41 % |
| Category 10A | Household care, hand contact | 1.5 % |
| Category 10B | Aerosol air fresheners | 1.5 % |
| Category 11A | Intended skin contact | 0.018 % |
| Category 11B | Minimal skin contact | 0.018 % |
| Category 12 | No skin contact, candles | Not restricted |
| IFRA Amendment | 51 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization And Systemic Toxicity |
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.