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Sell Zinc Oxide Pharmaceutical Grade USP34

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Brand: Metals Kingdom
型号: BP2008
规格: 99.85% min
Price: 2800.00USD/mt
Min.Order: 1 mt
Supply
Delivery: Shipment within 10 days since the date of payment
Address: China
Valid until: Never Expire
Updated on: 2017-06-02 14:19
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Details
With GMP,DMF,ISO9001,ROHS

CAS
  NO.
: 1314-13-2

Molecular Formula : ZnO
Molecular Weight : 81.38

Properties : White powder,stable
  under normal temperature, good hiding power and colouring power.Insoluble in
  water and alcohol ,soluble in acid ,alkali and amkonium solution.

Use : medicine,cosmetic,plaster,adhesive plaster,dental impression   pastezinc ointment and etc
Storage : Store at a cool and dry place.

Packing : 25Kg
  woven bags lined with plastic bag
(special packing can be made according to
  clients' requirement).

Specification USP32 ( % )
Idex item
Standard
Assay(ZnO)
99.0%-100.5%
identification
A:When stongly heated,it assumes a yellow color
 
that disappears on cooling
 
B:Asolution of it in a slight excess of 3N
 
hydrochloric acid responds to the tests for
 
Zinc<191>
Alkalinity

Mix 1.0g
    with 10ml of hot water,add 2 drops of

 
phenolphthalein TS,and filter;if a red color
 
is produced.not more than 0.30ml of 0.10 N
 
hydrochloric acid is required to discharge it
Loss on ignition
not more than 1.0%
As
not more than 6ppm
Carbonate and color of solution

Mix 2.0g
    with 10ml of water,add 30ml of 2N

 
sulfuric acid,and heat on a steam bath,with
 
contant stirring;no effervescence occours
 
and the resulting solution is clear and colorless
Lead(Pb)

Add 2g
    to 20ml of water,stir well,add 5ml of

 
glacial acetic acid,and warm on a steam bath
 
until solution is effected,the addition of 5
 
drops of potassium chromate TS produces no
 
trubidity or precipitate
Iron and other heavy metals
Cooled 5ml portions of the solution obtained
 
in the test for Carbonate and color of solution
 
yield white precipitates with potassium
 
ferrocyanide TS and with sodium sulfide TS
 
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