Birch tar oil, rectified
- CAS number
- 8001-88-5
- Olfactory family
- leather
- Type
- Essential oil
- Origin
- natural
- Typical pyramid position
- base
- IFRA NCS category
- C2.9.2
Synonyms & trade names
Birch Tar “Signature” Oil, Clear · Birch Tar Oil, Purified
Related materials (same CAS, different extraction)
- Birch Tar Rectified
IFRA 51st Amendment
Birch wood pyrolysateProhibited / specification · 47th Amendment
Basis: CARCINOGENICITY, GENOTOXICITY BY RELEASE OF POLYNUCLEAR HYDROCARBONS (PAH)
| IFRA category | Max. in finished product |
|---|---|
| 1 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 2 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 3 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 4 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 5A | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 5B | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 5C | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 5D | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 6 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 7A | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 7B | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 8 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 9 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 10A | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 10B | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 11A | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 11B | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
| 12 | Prohibited — Prohibited unless the material meets the specification (e.g. rectified/purified quality) — see the IFRA Standard |
Crude birch wood (bark) pyrolysates (oils) derived by pyrolysis (destructive distillation) of the wood or bark of Betula pubescens, Betula pendula, Betula lenta or Betula alba should not be used as a fragrance ingredient for any finished product application. Only rectified (purified) Birch tar oils being in compliance with the limitations for polynuclear aromatic hydrocarbons (PAH) established by this IFRA Standard should be used.
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 product.
Restricted constituents (IFRA Annex)
Typical content of IFRA-relevant constituents this natural contributes to a formula:
- Cresol (unspecified) — up to 1.8% (CAS 1319-77-3)
- 2-Methyl-2-pentenal — up to 0.05% (CAS 623-36-9)
Informational summary of the IFRA 51st Amendment dataset — not legal or toxicological advice. Always verify against the official IFRA Standard and your supplier's documentation before selling a product.
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