Vanillyl butyl ether I. Physical and chemical properties Alias: vanillyl butyl ether Appearance: colorless to pale yellow viscous clear liquid Molecular formula: C12H18O3 Molecular weight: 210.27 CAS: 82654-98-6 FEMA 3796 Second:the specifications project Standard Main content (%) ≥95 Refractive index (ηD20) 1.5361-1.5461 Density (p20) g/ml 1.0802-1.0962 Third: useage As a mild, low-irritant and highly effective heat sensitizer, it is widely used in cosmetics, medical plasters, and health care products.