| 2-BIPHENYLCARBOXYLIC ACID | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 947-84-2 |
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| EINECS NO. | 213-432-1 | |
| FORMULA | C6H5C6H4COOH | |
| MOL WT. | 198.22 | |
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H.S. CODE |
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| TOXICITY | ||
| SYNONYMS | o-Phenylbenzoic acid; Biphenyl-2-carboxylic acid; | |
| [1,1'-Biphenyl]-2-carboxylic acid; Diphenyl-2-carboxylic acid; 2-Phenylbenzoic acid | ||
| DERIVATION | ||
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | white to off-white powder | |
| MELTING POINT | 111 - 113 C | |
| BOILING POINT | 199 C at 10.00mmHg | |
| SPECIFIC GRAVITY | ||
| SOLUBILITY IN WATER | Insoluble | |
| pH | ||
| VAPOR DENSITY | ||
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AUTOIGNITION |
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NFPA RATINGS |
Health: 1; Flammability: 0; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT | ||
| STABILITY | stable under ordinary conditions | |
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GENERAL DESCRIPTION AND APPLICATIONS |
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| Biphenyl (also called Diphenyl, but exactly one of two compounds. The other is o-phenylphenol, used to prevent the growth of moulds ) is an aromatic hydrocarbon; molecule structure is composed of two six-sided carbon rings connected at one carbon site on each ring. Pure biphenyl is a toxic colourless crystalline solid with a pleasant odour; melting point 70 C, boiling point 255 C, which gives plates or monoclinic prismatic crystals; it is insoluble in water but soluble in ordinary organic solvents. It is directly used in the preservation of citrus fruits as a fungistat in transportation containers. It is a raw material for polychlorinated diphenyls (PCB) in which chlorine replaces hydrogen in biphenyls. There are 209 chlorinated isomers of biphenyl theoretically. But PCBs are referred to the biphenyl compounds with one to ten chlorine substitutions. PCBs are used heat-transfer agents and as electric insulators that block the flow of electric current across in electrical equipments. They are known as environmental pollution materials which are accumulated in animal tissues and cause toxic effects including carcinogenesis. Biphenyl is used as an intermediate for the production of a wide range of organic compounds (e.g. emulsifiers, optical brighteners, crop protection products, plastics), as a heat transfer medium alone or with diphenyl ether in heating fluids, as a dyestuff carrier for textiles and copying paper and as a solvent in pharmaceutical production. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
white to off-white crystalline powder | |
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ASSAY |
99.0% min |
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MELTING POINT |
111 - 113 C |
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TRANSPORTATION |
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| PACKING | ||
| HAZARD CLASS | ||
| UN NO. | ||
| OTHER INFORMATION | ||
| Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26-36 | ||
