product name:N-methyl-2-pyrrolidone Purity 99.5%min Butyrolactone 0.020% ... , paint, coating film and insulation material, fiber textile and viscose, etc.(5 ), used as industrial detergent(6 ), used as solvent and ... : Specification:ItemSpecificationUnitPurityMin 99.5%ButyrolactoneMax 0.020%Moisture0.05%Chroma25APHA N-methyl-2-pyrrolidone