A white to creamy white powder;
Readily soluble in water and a variety of organic solvent;
| PVP-K90(Pharam,Cosmetic,Industry,Food Grade) |
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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
