People's Republic of China standard GB/T3185-92 %(m/m)
Item |
Index |
||
Model |
Top Grade |
First Grade |
Qualified Product |
Zinc Oxide (as ZnO) % ≥ |
99.7 |
99.5 |
99.4 |
Metals (as dry)% ≤ |
No |
No |
0.008 |
Lead Oxide (as Pb) % ≤ |
0.037 |
0.05 |
0.14 |
Manganese Oxide (as Mn) % ≤ |
0.0001 |
0.0001 |
0.0003 |
Copper Oxide(as Cu)% ≤ |
0.0002 |
0.0004 |
0.00007 |
Insoluble Matter in Hcl % ≤ |
0.006 |
0.008 |
0.05 |
Loss on ignition % ≤ |
0.20 |
0.20 |
0.20 |
Residue on sieve % ≤ |
0.10 |
0.15 |
0.20 |
Water soluble matter% ≤ |
0.10 |
0.10 |
0.15 |
Volatile matter on 105℃% ≤ |
0.3 |
0.4 |
0.5 |
Purposes:
Pharmaceutical grade zinc oxide is mainly used for the production of creams, tablets, capsules and injectable drugs. Is a necessary component of many new drugs products.