Properties: white, non-toxic, odorless, amorphous semitransparent solid, soluble in acid, insoluble in water and alkalis or organic solvents; decomposed at 185°C
Use: Widely used in
- Pharmacy——pharmaceutical material and intermediate etc.;
- Food Industry——food additives, thickening agent, preservative of fruit and vegetable.;
- Environment Protection——solid-liquid separating medium, sewage dewatering agent etc.;
- Textiles Industry——sizing agent and printing & dyeing auxiliaries;
- Daily-use Chemicals Industry——moisture keeping agent, hair fixing agent;
- Tobacco Industry——adhesive and tar reducing agent;
- Agriculture——feed additive and seed processing agent;
Quality Index:
Item |
Pharmaceutical Grade |
Food Grade |
Industrial Grade |
Appearance |
similar to white powder |
similar to white powder |
similar to white or light yellow semitransparent flake or powder |
Degree of Deacetylation % |
≥90%, 95% |
≥85%, 90%, 95% |
≥80%, 85%, 90% |
pH(1% solution) |
7.0-8.0 |
7.0-8.0 |
7.0-8.0 |
Loss on Drying % |
≤8.0% |
≤10.0% |
≤12.0% |
Residue on ignition% |
≤1.0% |
≤1.5% |
≤2.0% |
Insolubles % |
≤1.0% |
≤1.0% |
≤2.0% |
Heavy metal (Pb)ppm |
≤10ppm |
≤10ppm |
|
Arsenic ppm |
0.5ppm |
0.5ppm |
|
Total Bacterial Number cfu/g |
1000cfu/g |
1000cfu/g |
|
Viscosity (1% solution)mpa.s |
30-1000mpa.s |
Mesh |
40mesh, 60mesh, 80mesh, 100mesh |
|