| ≥1 piece |
Name: Gallic acid
Chemical Name: 3,4,5-Trihydroxybenzoic acid
CAS No: 149-91-7
Molecular formula & Molecular weight: C7H8O6 / 88.13
Property:
White or light brown needle crystal or powder. The melting point of 235-240°C (decomposition). Heated to 100-100 °C lose crystal water, heated to above 200 °C when the loss of carbon dioxide and generate coke gallic acid (namely three phenolic benzene). Soluble in hot
water, ethyl ether, ethanol, acetone and glycerin, hardly soluble in cold water, insoluble in benzene and
chloroform.
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Item |
Standard |
|
Purity |
99.0%min |
|
Insoluble in water |
Clear |
|
Loss on drying |
0.5%max |
|
Residue on ignition |
0.1%max |
|
Tannic acid |
1ppm max |
|
Sulfate |
20ppm max |
|
As |
3ppm max |
|
Pb |
10ppm max |
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Turbidity |
10ppm max |
Speciifcation: EP6
Uses:
Widely used in medicine, dyestuff, chemicals and organic synthesis, and also used for the analysis of rare metal.
Has antibacterial effect, but in the treatment of bacillary dysentery. Have convergence, hemostatic, anti-diarrhea effect. Can be used as a preservative. To the preparation of pyrobitumen medium of gallic acid, medicine,
ink, dye and explosion-proof agent, etc. Also used as a developer and detect free inorganic acid, dihydroxyacetone, alkaloid and metal such
as analytical reagent.
Storage: Moistureproof and avoid light, sealed storage
Packing: plastic bag lined woven bag Net wt 25kg