... Specification(CP/BP/USP/EP) AppearancePurity %Water Content %Refractive Index nD20Speci Gravity DColorless and pure liquid(min25°C)min99 ... synthetic intermediate. It is mainly applied as the solvent of synthetic resin, agricultural pesticide, polybasic alcohol, printing ink ... , sulphur, and as the raw material of polyvinyl pyrrolidone, polyamide-4 and piracetam. Certificate International ...