Gallic acid/CAS: 149-91-7
Short Description:
Product name: Gallic acid
Type:ZA-N
CAS: 149-91-7
MF: C7H6O5
MW: 170.12
STRUCTURE:
Density: 1.694
Melting point: 251 °C (dec.) (lit.)
White or light brown needle-like crystals or powder. Melting point: 235-240℃ (decomposition). When heated to 100-120℃, it loses its crystalline water. When heated above 200℃, it loses carbon dioxide and forms pyrogallic acid (i.e., triphloroglucinol). It is soluble in hot water, ether, ethanol, acetone and glycerol, slightly soluble in cold water, and insoluble in benzene and chloroform.
specification
| Specification | Content(%) |
| The amount of gallic acid content (dry basis) % | 99.50 min |
| Loss on drying% | 0.50max |
| Tannic acid test | No cloudy |
| Water dissolved experiment | No cloudy |
| Chroma (Platinum-cobalt color number) | 180 max |
| Turbidity | 10 max |
| Sulfate (As SO42-) % | 0.02 max |
| Residue on ignition % | 0.1 max |
| CL- % | 0.02 max |
Usage
gallic acid (GA), also known as gallnut acid, is a component of hydrolyzable tannins and has the chemical name 3,4, 5-trihydroxybenzoic acid. Gallic acid has a relatively high content in Yunnan Pu 'er tea and itself possesses multiple biological effects such as antibacterial, anti-inflammatory, anti-tumor and anti-mutagenic.
Gallic acid has many uses in pharmaceuticals, inks, dyes, food, light industry and organic synthesis, etc. Gallic acid reacts with trivalent iron ions to form a blue-black precipitate, which is the raw material for blue-black ink. It is also used in industry for leather making. It can also be used as a photographic developer. Propyl gallate is an antioxidant and can be used in edible oils and fats to prevent spoilage and deterioration. In medicine, gallic acid is a hemostatic and astringent agent, as well as a mild local irritant.
It has antibacterial effects and can be used to treat bacillary dysentery. It has astringent, hemostatic and anti-diarrheal effects. It can be used as a preservative. It can be used to prepare pyrogallic acid, drugs, inks, medium dyes and anti-explosion agents, etc. It is also used as a developer and an analytical reagent for detecting free inorganic acids, dihydroxyacetone, alkaloids and metals, etc.
It can be used as a preservative, and can be used to prepare medium dyes and anti-explosion agents, etc
Used as a chemical reagent
It is mainly used as a colorant for blue-black ink. It is used in the pharmaceutical industry to prepare the sulfonamide potentiator TMP and as a compounding agent for sulfonamides such as SMZ and SD-ethyl. The food industry uses it to prepare the preservative gallic acid. It is used in the defense industry to prepare explosion-proof agents. In addition, it can also be used in the production of mordant dyes and as a developer, etc
Used as a depolarizer in electrochemical analysis; used for reducing phosphomolybdic acid; used for the detection of antimony, barium, bismuth, calcium, cerium, copper, etc.; used for the determination of phosphorus, nitrite, silver, thorium, titanium, etc.
A water-soluble phenolic acid, present in the leaves of grapes and many plants, is an effective in vitro antioxidant.
Packaging and Shipping
25KG/Drum or as customer requirements.
Belongs to common goods and can deliver by ocean and air
Keep and storage
Shelf life:24 month from date of manufacture in original unopened packaging stored in a cool dry place out of direct sunlight, water.
Ventilated warehouse, Low temperature drying, Separated from oxidants, acids.
