Synonyms: Gallic acid, Gallnut acid
Chemical name: 3, 4, 5-Trihydroxybenzoic acid
Mol. Formula and Mol. Weight: (HO)3C6H2COOH H2O=188. 13
Registry number: 149-91-7

1. Industrial grade

Description: A white or pale colored crystalline powder. Soluble in 85 parts of water, 6 parts of alcohol, 2 parts of boiling water. Slightly soluble in ether.

Item: Technical grade
Drying loss: ¡Ü, 10.0%  
Content:  ¡Ý98.0%  

Item: I-grade  
Solubility: Passes test
Drying loss: ¡Ü10.0%  
Ignition residue:  ¡Ü0.1%  
Content:  ¡Ý98.5%  
Sulfates(SO4): ¡Ü0.05%  

Item: SP-grade
Solubility:  Passes test
Drying loss: ¡Ü10.0%
Ignition residue:   ¡Ü0.05%
Content:  ¡Ý99.0%
Sulfates(SO4): ¡Ü0.02%

Uses: Gallic acid has been widely in organic synthesis, pharmaceutical, ink manufacturing, dyestuff, national defence, food and light industries.

Packaging: A net weight of 25kg, packed in woven plastic bags. Export product packed in paperbord drums of 25kg net each.

2. Electronics grade

Specification
Appearance  White  crystal  powder
Assay%                      ¡Ý99.0
Loss on drying%  ¡Ü10.0
Residue on ignition%  ¡Ü0.1
Acid value(mg  KOH/g)  290-330
Metallic  impurities:  
AI  ppm  ¡Ü1.0
Ca  ppm  ¡Ü1.0
Cu  ppm  ¡Ü1.0
Fe  ppm  ¡Ü1.0
Pb  ppm  ¡Ü1.0
Mg  ppm  ¡Ü0.5
Ni  ppm  ¡Ü0.5
K   ppm  ¡Ü0.5
Na  ppm  ¡Ü0.5
Zn  ppm  ¡Ü1.0
Cr  ppm  ¡Ü0.5
Mn  ppm  ¡Ü0.5  

Uses: additive materials for fine chemistry and electronics field.
Packaging: 25KGs/drum