Properties: Off-white, innocuous, flavorless, amorphous and semitransparent solid, soluble in acid, insoluble in water and alkalis or ordinary organic solvents, decomposed at 185°C.
Application: Widely used in the following industries: pharmaceuticals, food, health care, textile , dyeing and printing, leather, coating, tobacco, plastics, cosmetics, feed, color film, paper making, bioengineering, agriculture protecting and sewage treatment etc.
Quality Index:
Item |
Pharmaceutical Grade |
Food Grade |
Industrial Grade |
Appearance |
Off-white powder |
Off-white powder |
Off-white or light yellow semitransparent flake or powder |
Degree of Deacetylation, % |
≥85,90, 95 |
≥85, 90, 95 |
≥80, 85, 90 |
pH |
7.0-8.0 |
7.0-8.0 |
7.0-8.0 |
Loss on Drying,% |
≤10 |
≤10 |
≤12 |
Residue on Ignition, % |
≤1.0 |
≤1.0 |
≤2.0 |
Insoluble, % |
≤1.0 |
≤1.0 |
≤2.0 |
Heavy Metals, ppm (as Pb) |
≤10 |
≤10 |
------ |
Arsenic, ppm |
≤0.5 |
≤0.5 |
------ |
Total Plate Count, cfu/g |
≤1000 |
≤1000 |
------ |
Yeast, cfu/g |
≤100 |
≤100 |
------ |
E.Coli |
Negative |
Negative |
------ |
Salmonella |
Negative |
Negative |
------ |
Viscosity (1%,20°C), mpa.s |
30-1000 |
Particle Size, mesh |
40, 60, 80,100 |
Packing |
25kg/drum, 20kg/carton |
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