Gallic acid has many uses in pharmaceuticals, inks, dyes, food, light industry and organic synthesis. Gallic acid and ferric ions form a blue-black precipitate, which is the raw material of blue-black ink; it is also used in leather making industry; it can also be used as a photographic developer. Propyl gallate is an antioxidant and can be used in edible oils to prevent rancidity and deterioration. In medicine, gallic acid is a hemostatic astringent and a mild local irritant.
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Gallic acid is a trihydroxybenzoic acid, a type of phenolic acid, a type of organic acid, also known as 3,4,5-trihydroxybenzoic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants.The chemical formula is C6H2(OH)3COOH. Gallic acid is found both free and as part of hydrolyzable tannins. The gallic acid groups are usually bonded to form dimers such as ellagic acid. Hydrolysable tannins break down on hydrolysis to give gallic acid and glucose or ellagic acid and glucose, known as gallotannins and ellagitannins respectively.
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Product name |
Gallnut Extract |
|
Test item(s) |
Limit |
Test result(s) |
Marker Compound |
Gallic acid ≥ 98% |
98.14% |
Appearance & Color |
Light grey fine powder |
Conform |
Odor& Taste |
Characteristic |
Conform |
Plant Part Used |
Insect gall |
Conform |
Excipient |
Negative |
Conform |
Mesh Size |
95% Through 80 Mesh |
Conform |
Loss on Drying |
≤5.0% |
3.25% |
Ash Content |
≤5.0% |
2.18% |
Total Heavy Metals |
≤10ppm |
Conform |
Arsenic (As) |
≤0.5ppm |
Conform |
Lead (Pb) |
≤2ppm |
Conform |
Cadmium(Cd) |
≤1ppm |
Conform |
Mercury(Hg) |
≤0.5ppm |
Conform |
Total Plate Count |
≤10,000cfu/g |
Conform |
Total Yeast & Mold |
≤1,000cfu/g |
Conform |
E. Coli |
Negative in 10g |
Conform |
Salmonella |
Negative in 25g |
Conform |
Staphylococcus |
Negative in 25g |
Conform |
Conclusion |
Complies with standards. |
Product knowledge
What is this product?
Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid, a type of phenolic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. The chemical formula of gallic acid is C6H2(OH)3COOH. It is found both free and as part of hydrolyzable tannins. The gallic acid groups are usually bonded to form dimers such as ellagic acid. Hydrolyzable tannins break down on hydrolysis to give gallic acid and glucose or ellagic acid and glucose, known as gallotannins and ellagitannins, respectively.
Application
Antibacterial function, cure dysentery. It has the functions of convergence, hemostasis and diarrhea. Can be used as preservative. Preparation of pyrogallic acid, drugs, inks, dyes and other media explosion-proof agent. Also used as a developer and an analytical reagent for the detection of free inorganic acids, two hydroxy , alkaloids, and metals.
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