Birch Tar Oil, Rectified
Naturals Base Note CAS 8001-88-5
A powerful smoky note of burnt wood and tar with a distinct leathery character. Used in traces, it is the classic backbone of leather and smoky accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Woody |
| Descriptor 2 | Warm |
| Descriptor 3 | Smoky |
| Odor Impact1 | 1200 |
| Tenacity1 | 400 h |
1 Source: PerfumersWorld
Identification
| CAS Number | 8001-88-5 |
| INCI Name | Betula alba oil |
| Category | Naturals |
| Botanical Name | Betula pubescens Ehrh. |
Synonyms
Betula alba f. pubescens (Ehrh.) Bolzon, Betula alba subsp. alba L, Birch Tar Oil, Betula Pendula Roth Tar Oil, Birch tar oil (rectified), betula pendula roth essence, betula platyphylloides essence, betula procurva subsp. lipskyi essence, betula pseudopendula essence, betula talassica essence, betula verrucosa essence
Physical and chemical data
| Flash Point | 68 °C |
| Density | 1.030 to 1.149 |
| Refractive Index | 1.450 to 1.600 |
| Solubility | alcohol |
| Appearance | colorless to pale yellow clear liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | Prohibited |
| Category 2 | Deodorants, antiperspirants | Prohibited |
| Category 3 | Eye products | Prohibited |
| Category 4 | Fine fragrance | Prohibited |
| Category 5A | Body lotion | Prohibited |
| Category 5B | Face cream | Prohibited |
| Category 5C | Hand cream | Prohibited |
| Category 5D | Baby creams, oils | Prohibited |
| Category 6 | Oral care, mouthwash | Prohibited |
| Category 7A | Rinse-off hair products | Prohibited |
| Category 7B | Leave-on hair products | Prohibited |
| Category 8 | Intimate and baby wipes | Prohibited |
| Category 9 | Soap, shampoo, rinse-off | Prohibited |
| Category 10A | Household care, hand contact | Prohibited |
| Category 10B | Aerosol air fresheners | Prohibited |
| Category 11A | Intended skin contact | Prohibited |
| Category 11B | Minimal skin contact | Prohibited |
| Category 12 | No skin contact, candles | Prohibited |
| IFRA Amendment | 47 |
| Restriction Type | Prohibition |
| Critical Effect | Carcinogenicity, Genotoxicity By Release Of Polynuclear Hydrocarbons (pah) |
| Specification | Limit content of polynuclear aromatic hydrocarbons (PAH) resulting from the use of rectified oils according to Good Manufacturing Practice. Benzopyrene and 1,2-Benzanthracene are to be used as markers for PAH. If used alone or in combination with rectified Cade oil, rectified Styrax oil or rectified Opoponax oil, the total concentration of both of the markers should not exceed 1 ppb in the final p |
Restricted components
| Component | Share |
|---|---|
| D-Limonene | 4.5 % |
| Isoeugenol | 4 % |
| Trans-Isoeugenol | 2.5 % |
| Eugenol | 1.5 % |
| 2-Methyl-2-Pentenal | 0.05 % |
IFRA regulated substances contained in this material. The interactive index derives the effective maximum concentration per category from them.
EU allergen declaration
| Substance | Share |
|---|---|
| Limonene | 4.5 % |
| Isoeugenol | 4 % |
| trans-Isoeugenol | 2.5 % |
| Eugenol | 1.5 % |
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.