Properties:
Molecular formula:ZnO
Molecular weight :81.39
white /slight yellow fine powder , specific gravity 5.5－6.5 , granularity 0.15－0.7um ）, refractive index is 1.95－2.05 , specific heat in 20 ℃ 0.0915 ka. /g. ℃, melting point 1973 ℃, Zinc oxide evaporates in 1000 ℃ .
Molecular weight :81.39
white /slight yellow fine powder , specific gravity 5.5－6.5 , granularity 0.15－0.7um ）, refractive index is 1.95－2.05 , specific heat in 20 ℃ 0.0915 ka. /g. ℃, melting point 1973 ℃, Zinc oxide evaporates in 1000 ℃ .
Company standard : HHXPQB — YHX （ YY ）— 2005
Technical index :
|
Item |
Value |
|
Zinc oxide ( ZnO dry ),% ≥ |
99.0-100.5 |
|
（ Fe）, ppm ≤ |
200 |
|
（ Pb）,ppm ≤ |
50 |
|
Arsenic （ As）,ppm ≤ |
5 |
|
（ Cd）,ppm ≤ |
10 |
|
Loss on ignition （ 500'C）,% ≤ |
1.0 |
|
Alkalinity |
qualified |
|
Carbonate and insoluble ammter in acid |
qualified |
medicine grade Zinc oxide （ in accordance with USP23 ）, medicine grade Zinc oxide （ in accordance with BP98 ）
Uses:
pharmaceutical material Zinc oxide can be used in medicine
Packing, transportation and storage :
pharmaceutical material Zinc oxide
plastic bag or waterproof bag lined plastic woven bag , Net Wt. 50kg . size is : 580 × 1250mm .
It should ve protected by covers when transportation , avoid rain, moisture, or mixed with acidic matter .
packed in dry and airiness place, no contact with acid and alkali , In good condition, its valid period is an half year (the packing should be sealed), if expired, qualified product is still available
It should ve protected by covers when transportation , avoid rain, moisture, or mixed with acidic matter .
packed in dry and airiness place, no contact with acid and alkali , In good condition, its valid period is an half year (the packing should be sealed), if expired, qualified product is still available