description it is a pale yellow liquid. it may have a slight characteristic odour. bht (max. 0.1%) is added as an antioxidant. product identification chemical names: ethylhexyl methoxycinnamate; octyl p-methoxycinnamate; 3-(4-methoxy-phenyl)-propionic acid 2-ethyl-hexyl ester; 2-ethylhexyl 3- (4-methoxyphenyl)-2-propenoate cas no.: 5466-77-3 inci name: ethylhexyl methoxycinnamate (2-ethylhexyl methoxycinnamate) usan: octinoxate empirical formula: c18h26o3 molecular mass: 290.4 g/mol specifications appearance: pale yellow liquid identity: corresponds specific density (25 °c): 1.005–1.013 refractive index (20 °c): 1.542–1.548 acidity: max. 0.8 ml naoh 0.1n gas chromatography: cis-isomer: max. 0.5% trans-isomer: 95.0–105.0% uv specific extinction (e 1%, 1 cm at 310 nm): 835-865 chromatographic purity: each: max. 0.5% total: max. 2.0% solubility it is miscible with ethanol and commonly used lipids, but does not mix with water.