There are two grade in this product, industrial grade and pharm grade.
items | 60RT | 65RT | 75RT |
Methoxy content (wt%) | 28-30 | 27-30 | 19-24 |
Hydroxypropoxyl content(wt%) | 7-12 | 4-7.5 | 4-12 |
Gel temperature (°C) | 58-64 | 62-66 | 70-90 |
Loss on drying(wt%) | ≤5 | ||
Residue on ignition(wt%) | ≤1 | ||
PH (1% solution @ 25°C) | 4-8 | ||
Oxide(NaCl) (wt%) | ≤0.2 | ||
Arsenic(ppm) | ≤2 | ||
Total bacterium | ≤1000/gram | ||
Escherichia coli | Not detect | ||
Viscosity
Items | Specification | Scope (mpa.s) |
Very Low viscosity | 3 | 2-4 |
5 | 4-6 | |
10 | 8-12 | |
15 | 13-18 | |
Low viscosity | 25 | 20-30 |
50 | 40-60 | |
100 | 80-120 | |
High viscosity | 4000 | 3500-5600 |
12000 | 10000-14000 | |
20000 | 17000-22000 | |
Very high viscosity | 30000 | 27000-32000 |
40000 | 38000-42000 | |
60000 | 58000-62000 | |
100000 | 98000-120000 | |
cellulose ethers pharm grade
