Benzoic Acid
Benzoic acid
CAS NO.: 65-85-0
Benzoic acid is an aromatic acid organic compound and the simplest aromatic acid. Benzoic acid is widely present in nature in the form of free acid, ester or its derivatives. It is mainly used to prepare sodium benzoate preservatives, and is used in the synthesis of drugs and dyes. It is also used in the preparation of plasticizers, mordants, fungicides and fragrances.
Basic information
Chemical name: Benzoic acid
CAS No.: 65-85-0
EINECS No.: 200-618-2
Molecular Formula: C7H6O2
Molecular Weight: 122.12
Specification
Tech grade | Food/Pharm grade | |||
Appearance | White flakes | Ir/retention time/benzoate | Positive | |
Purity(%) | 99 min ( 99.8 min ) | Assay | 99.5-100.5 | |
Phthalic acid(%) | 0.5 max | Moisture | 0.7 max | |
Chloride(%) | 0.3 max | Residue on ignition | 0.05 max | |
Ash(%) | 0.1 max | Heavy metals( as Pb,ppm ) | 2 max | |
Melting point(℃) | 121-123 | Readily carbonizate substance | Passed | |
Readily oxidizable substance(ml) | 0.5 max | |||
Congealing temperature(℃) | 121-123 | |||
Typical Properties
White crystalline powder, soluble in ethanol, slightly soluble in water, has a benzoic smell, and can sublime when heated.
Packing
In 25kgs/bag,500kg/bag,1000kg/bag, polyethylene plastic bag, coating bag, super sack
Application
1.Used as a preservative for food, medicine, cosmetics, toothpaste, spices, tobacco, feed, etc. Benzoic acid has the effect of sterilization and inhibition of bacterial growth. The change of pH value has a great influence on its effect. The effect is best when the pH value is 2.5-4.5, and it is significantly reduced in alkaline medium. It is widely used as a preservative for food, medicine, cosmetics, toothpaste, spices, tobacco, and feed.
2.It can improve the gloss, viscosity, strength and chemical corrosion resistance of various alkyd resin coatings, terminate the chain growth of alkyd resins, and change the crystallinity of products.
3. It can be used as a carrier of dyes when hydrophobic polyester fibers are colored.
4.It is used as a raw material for synthesizing benzoyl chloride and various plasticizers.
