Appearance colorless or light yellow oily liquid Assay 99.0% Min. Chroma (Apha) 20Max. Structure formula CH3OOC(CH2)4桟OOCH3 Molecular formula C8H14O4 Molecular Weight 174.20 Boiling point 110(14mmHg). Freeze point 8 Acid value KOHmg/g 0.10Max. CAS No. 627-93-0