Dimethyl sulfate Boiling point: 188 °C freezing point:-26.8°C specific gravity:1.3322(20/4°C) flash point:83°C Index of quality:Q/ZXH001-2001 Item Index Conternt 98.5% 99% Acidity 0.5% 0.3% Appearance Colorless Transparent Liquid Packaging: Number of dangerous goods:61116 UN Number:1595 Packaging marks:Poisonous, corrosive products Packaging category: Ⅰclass packaging