| BENZOIC ACID | ||
|
PRODUCT IDENTIFICATION |
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| CAS NO. |
65-85-0 |
|
| EINECS NO. | 200-618-2 | |
| FORMULA |
C6H5COOH | |
| MOL WT. | 122.12 | |
| H.S. CODE | 2916.31 | |
|
TOXICITY |
Oral rat LD50: 1700 mg/kg | |
| SYNONYMS | Benzenemethanoic Acid; Carboxybenzene; | |
| Acide Benzoique (French); Acido Benzoico; Benzenecarboxylic Acid; Benzeneformic Acid; Benzoate; Benzoesaeure; Carboxybenzene; Dracylic Acid; Flowers of Benjamin; Flowers Of Benzoin; Phenylcarboxylic Acid; Phenylformic Acid; Salvo Liquid; Salvo Powder; Benzoesäure (German); ácido benzoico (Spanish); Acide benzoïque (French); Kyselina Benzoova (Czech); | ||
|
DERIVATION |
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|
CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE |
White, crystalline flakes | |
| MELTING POINT | 122 C | |
| BOILING POINT |
249 C | |
| SPECIFIC GRAVITY | 1.321 | |
| SOLUBILITY IN WATER | 0.29 g/100 ml | |
| pH | 2.8 (saturated solution at 25 C) | |
| VAPOR DENSITY | 4.2 | |
|
AUTOIGNITION |
571 C | |
|
REFRACTIVE INDEX |
| |
|
NFPA RATINGS |
Health: 2; Flammability: 1; Reactivity: 0 | |
| FLASH POINT |
121 C | |
| STABILITY | Stable under ordinary conditions | |
|
GENERAL DESCRIPTION & APPLICATIONS |
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| Benzoic acid, the simplest aromatic carboxylic acid containing carboxyl group bonded directly to benzene ring, is a white, crystalline organic compound; melting at 122 C (starting sublime at 100 C); boiling at 249 C; slightly soluble in water, soluble in ethanol, very slightly soluble in benzene and acetone. Its aqua solution is weakly acidic. It occurs naturally in many plants and resins. Benzoic acid is also detected in animals. The most of commercial benzoic acid is produced by the reaction of toluene with oxygen at temperatures around 200 C in the liquid phase and in the presence of cobalt and manganese salts as catalysts. It can be prepared also by the oxidation of benzene with concentrated sulphuric acid or carbon dioxide in the presence of catalysts. Other methods are such as by the oxidation of benzyl alcohol, benzaldehyde, cinnamic acid; by hydrolysis of benzonitrile, benzoyl chloride. More than 90% of commercial benzoic acid is converted directly to phenol and caprolactam. Its use in the production of glycol benzoates for the application of plasticizer in adhesive formulations is increasing. It is also used in the manufacture of alkyd resins and drilling mud additive for crude oil recovery applications. It is used as a rubber polymerization activators and retardants. Benzoic acid is converted to its salts and esters for the use of preservative application in foods, drugs and personal products. Sodium benzoate, sodium salt of benzoic acid, is used preferably as one of the principal anti-microbial preservatives used in foods and beverages (but it's concentration is limited usually not exceeding 0.1% because it is poisonous), as it is about 200 times more soluble than benzoic acid. Sodium Benzoate is also used in medications, anti-fermentation additives and tabletting lubricant for pharmaceuticals. The industrial applications are as a corrosion inhibitor, as an additive to automotive engine antifreeze coolants and in other waterborne systems, as a nucleating agents for polyolefin, as a dye intermediate, as a stabilizer in photographic processing and as a catalyst. Wide range of benzoic esters are used as solvents, dying carrier, disinfectant additive, penetrating agent and pesticides and manufacturing other compounds. | ||
| SALES SPECIFICATION | ||
|
APPEARANCE |
White, crystalline flakes | |
| ASSAY |
99.5% min | |
| MOISTURE |
0.1% max | |
| COLOR, APHA |
50 max | |
|
MELTING POINT |
121.5 C min | |
|
RESSIDUE ON IGNITION |
0.1% max | |
| TRANSPORTATION | ||
| PACKING | 25kgs bag, 18mts in container | |
| HAZARD CLASS | ||
| UN NO. | ||
| OTHER INFORMATION | ||
| Hazard Symbols: XN, Risk Phrases: 22, Safety Phrases: n/a | ||
