PVP K90 cosmetic grade pharm grade

A white to creamy white powder; Readily soluble in water and a variety of organic solvent;

PVP-K90(Pharam,Cosmetic,Industry,Food Grade)

Chemical Description:polyvinylpyrrolidoneCAS No.9003-39-8Molecular and Structural Formula(C6H9NO)nCharacteristics --A white to creamy white powder;--Readily soluble in water and a variety of organic solvent;--Good hygroscopicity and adhension; No. Specification K30 K90 K25 K15 K17 1 PH(in 5% solution) 3-5 3-5 3-5 3-5 3-5 2 Viscosity,as K-value 29-32 85-95 24-27 26-30 15-19 3 Aldehyde,ppm ≤500 ≤500 ≤500 ≤500 ≤500 4 Peroxides(as H2O2),ppm ≤400 ≤400 ≤400 ≤400 ≤400 5 Hydrazine,ppm ≤1 ≤1 ≤1 ≤1 ≤1 6 Impurity A(NVP),ppm ≤10 ≤10 ≤10 ≤10 ≤10 7 Impurity B(2-pyrrolidone),% ≤3.0 ≤3.0 ≤3.0 ≤3.0 ≤3.0 8 Heavy metals,ppm ≤10 ≤10 ≤10 ≤10 ≤10 9 Water,% ≤5.0 ≤5.0 ≤5.0 ≤5.0 ≤5.0 10 Sulphated ash,% ≤0.1 ≤0.1 ≤0.1 ≤0.1 ≤0.1 11 Assay,as Nitrogen content,% 11.5-12.8 11.5-12.8 11.5-12.8 11.5-12.8 11.5-12.8 Packaging and Storage--Packed in 25,50kg plastic drum, inner lined with PE bags;--Stored in dry place at room temperature;

PVP K90 cosmetic grade pharm grade