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2-MERCAPTONICOTINIC ACID | ||
PRODUCT IDENTIFICATION |
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CAS NO. | 38521-46-9 |
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EINECS NO. | ||
FORMULA | C6H5NO2S | |
MOL WT. | 155.17 | |
H.S. CODE |
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TOXICITY |
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SYNONYMS | 2-Mercaptopyridine-3-carboxylic acid; | |
DERIVATION |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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PHYSICAL STATE | yellowish crystalline powder | |
MELTING POINT | 263 - 265 C | |
BOILING POINT | ||
SPECIFIC GRAVITY | ||
SOLUBILITY IN WATER | ||
pH | ||
VAPOR DENSITY | ||
AUTOIGNITION |
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NFPA RATINGS |
Health: 1 Flammability: 1 Reactivity: 0 | |
REFRACTIVE INDEX |
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FLASH POINT |
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STABILITY | Stable under ordinary conditions | |
GENERAL DESCRIPTION AND APPLICATIONS |
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Niacin (also called Nicotinic Acid) and Niacinamide (also called Nicotinamide), two compounds of water-soluble vitamin B complex, are active in the metabolism of body. Chemically they are 3-Pyridinecarboxylic acid and 3-Pyridinecarboxamide respectively. Commercially, niacin is obtained from beta -picoline or from quinoline, which are both obtainable from coal tar. Niacinamide, more water soluble, is the amide form of niacin. When an amide molecule attaches itself to niacin, it becomes niacinamide. The B vitamins niacin and niacinamide are known as preventives of pellagra. Niacin is interchangeable in metabolism with its amide, niacinamide. Nicotinamide is hydrolyzed to the acid in the digestive tract of non-ruminants. After absorption in the mucosa, the amide is formed again. In the rumen of ruminants, nicotinamide is converted in a short time to nicotinic acid. Nicotinamide and nicotinic acid are therefore equivalent in action in the case of farm animals. These are key ingredients in animal feed and animal feed premixes as these contribute to numerous metabolic reactions as hydrogen-transferring coenzymes. 2-Mercaptonicotinic acid is used as an intermediate for agrochemicals, feed additives, pharmaceuticals and animal food enrichments. Niacin acts to reduce plasma cholesterol, as a vasodilator and to treat pellagra. Niacin is used for the prophylaxis. Their derivatives are used for these effects. |
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SALES SPECIFICATION | ||
APPEARANCE |
yellowish crystalline powder | |
ASSAY |
99.0% min |
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LOSS ON DRYING | 1.0% max | |
TRANSPORTATION | ||
PACKING | | |
HAZARD CLASS | ||
UN NO. | ||
OTHER INFORMATION | ||
Hazard Symbols: XI, Risk Phrases:36/37/38, Safety Phrases: 24/25/28A-37-45 |
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