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China Yangtze Pchem Co Limited

 

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Gallic Acid   [2012/12/26]
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Chemical name: 3,4,5- trihydroxybenzoic acid Molecular formula and weight( based on 1983 international atomic weight )
CAS 149-91-7
Molecular formula: C6H2(HO)3 .COOH.H2O     
Molecular weight: 188.4
Properties:White or grey white crystalline powder,losing crystal water at 100��C . Soluble in acetone,ethyl acetate, 85-share water, 6-share ethanol, 2-share boiling water, slightly soluble in cold water, insoluble in benzene or trichloromethane.
Use:Industrial gallic acid used in analyzing and testing bismuth, cerium, copper, nitryl,phosphorus, silver, thorium and titanium etc.. It is also widely used in the fields including organic synthesis, pharmaceutical, ink, dyes, national defence and food etc..
Specification: in accordance with JIS K8898-61 and GB5309-85
Main technical index:
 
Top quality of Japanese standard
Top quality of national standard
Factory standard
Content¡¡
98.5
98.5
99.50
Water solubility test
Yellowish, clear
Yellowish, clear
Yellowish, clear
Loss on drying
10.0
10.0
10.0
Residue on ignition
0.05
0.10
0.05
Sulphate
10.0 PPM
0.02
10.0 PPM
Tannin test
1.0 PPM
1.0 PPM
1.0 PPM
Turbidity
10.0 PPM
10.0 PPM
10.0 PPM
Chromatic number APHA
150
180
150

Contract index for exporting
Characteristic
Specification
Method
Source
Assay
> 98.0%
Acid-Base Titration
Reagent Chemicals, 9th ed., ACS
Al
2000 ppb max
Manufacturer Method
Manufacturer Method
Ca
4000 ppb max
Manufacturer Method
Manufacturer Method
Fe
3000 ppb max
Manufacturer Method
Manufacturer Method
Mg
1000 ppb max
Manufacturer Method
Manufacturer Method
K
2000 ppb max
Manufacturer Method
Manufacturer Method
Na
2500 ppb max
Manufacturer Method
Manufacturer Method
Zn
4000 ppb max
Manufacturer Method
Manufacturer Method
 
Storage:Stored in sealed container.
Packing: Plastic woven bag,NW: 25Kg/bag, Export products: packed in cardboard drum, 25Kg/drum.
 
According to USP 34 .BP2005 ,EP6


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[ Contact Info ]
icon Company China Yangtze Pchem Co Limited
icon Address
icon Phone 86-717-6307-579
icon Fax 86-717-6307-522
icon Homepage http://www.pchemchina.cn
icon Contact zhongguo chen /