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Ethylene brassylate

1,4-Dioxacycloheptadecane-5,17-dione

Musk T, Emeressence 1150, Ethylene tridecanedioate, Musk T

Macrocyclic diester · C₁₅H₂₆O₄

Chemical structure of Ethylene brassylate
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
105-95-3
Molecular formula
C₁₅H₂₆O₄
Molecular weight
270.37 g/mol
Origin
Synthetic
Odor family
Musk
Note
Base
Aroma
Sweet, soft musk, powdery and waxy, with no animal edge; fairly weak but long lasting.

History

Ethylene brassylate is a cyclic diester made from brassylic acid (tridecanedioic acid) and ethylene glycol. Brassylic acid can be obtained from erucic acid in rapeseed or crambe oil, so the starting material is plant derived.

Its low cost and high stability have made it one of the highest volume macrocyclic musks.

In perfumery

Ethylene brassylate is used at high levels in perfume, soap and laundry products to create a sweet musk base. It also works as a fixative for floral notes.

Regulatory status

Unrestricted · No IFRA standard
IFRA 51
No dedicated IFRA Standard in the 51st Amendment index.
EU allergen 2023/1545
Not named individually in the expanded allergen list of Regulation 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 105-95-3 (formula, names)
  2. Sell C.S. (ed.) The Chemistry of Fragrances: From Perfumer to Consumer, 2nd ed., Royal Society of Chemistry 2006
  3. The Good Scents Company Information System, material entries
  4. IFRA Standards, 51st Amendment: Index of IFRA Standards (notified 30 June 2023)