Benzoic acid

Benzoic acid, also known as benzoic acid, C6H5COOH, is a compound formed by the substitution of a hydrogen on the benzene ring by a carboxyl group (-cooh).A scaly or needle-like crystal with an odor of benzene or formaldehyde at room temperature.Its vapour has very strong irritant, easy to cause cough after inhalation.Slightly soluble in water, soluble in ethanol, ether and other organic solvents.

Benzoic acid is a weak acid, stronger than fatty acids.Their chemical properties are similar, can form salt, ester, acyl halogen, amide, anhydride and so on, are not easy to be oxidized.The electrophilic substitution reaction can occur on the benzene ring of benzoic acid, and the intersite substitution products are mainly obtained.

Benzoic acid is widely found in nature in the form of free acids, esters or derivatives.Benzoic acid is commonly used as medicine or antiseptic, have the effect of inhibiting the growth of fungus, bacterium, mould, when medicinally, normally besmear is on the skin, in order to treat the skin disease of tinea kind.Used in synthetic fiber, resin, coating, rubber, tobacco industry.Benzoic acid was originally prepared by the dry distillation of benzoin gum or by the hydrolysis of alkaline water, or by the hydrolysis of hippuric acid.Industrial benzoic acid is produced by air oxidation of toluene in the presence of catalysts such as cobalt and manganese.Or by the release of phthalic anhydride water carboxylic system.Benzoic acid and its sodium salt can be used as a bacteriostatic agent for latex, toothpaste, jam or other foods, as well as as a mordant for dyeing and printing.

Molecular formula: C₇H₆O₂
Molecular weight: 122.12
CAS RN: 65-85-0

Properties and uses
Appearance and properties:  white crystalline flakes or acicular powder with a little benzoin or benzaldehyde odor. Soluble in ethyl alcohol, slightly soluble in water. It sublimates if heated and its aqueous solution presents acidic
Boiling point: 249℃  Melting point: 122.13℃
Relative density 1.2659 (15/4℃)

Uses
1 As food preservative
2 As preservative in drug preparations 
3 As raw material in drug synthesis
4 Dyeing industry
5 As preservative in mosquito-repellent incense
6 As preservative in toothpaste
7 As corrosion inhibitor in motor vehicle antifreeze fluid

Packing, storage and transportation
Packing:  25kg woven bag lined with PE plastic bag. 
Storage: keep sealed, protect from damp and fire. 

Scale of production and position in industry
Scale of production 
Production capacity: 30,000 tons/year
Technology level 
Benzoic acid has high capacity of the market. The company pays attention to the R&D of all links of benzoic acid from reaction to rectification and wastewater treatment and the optimization of technology and equipment to ensure the benzoic acid purity achieve pharmaceutical and edible grade.