Your are here: Zhengzhou Natural Chemical Co.,Ltd >> Home >> Products >> Preservatives
Benzoic acid

Benzoic acid
Introduction.:
     Benzoic acid, used as a food preservative, represented by the E-numbers E210, E211, E212, and E213, the simplest aromatic carboxylic acid containing carboxyl group bonded directly to benzene ring, is a white, crystalline organic compound, The name derived from gum benzoin, which was for a long time the only source for benzoic acid. This weak acid and its salts are used as a food preservative. Benzoic acid is an important precursor for the synthesis of many other organic substances.
 
Product Identification.:
    Product name: Benzoic acid
    Synonyms: Benzenecarboxylic acid; Benzeneformic acid; Benzenemethonic acid;  Carboxybenzene; Oracylic acid; phenyl carboxylic acid; Phenylformic acid
    Molecular Formula: C7H6O2
    Molecular Weight: 122.12
    CASE NO: 65-85-0
    Product Grade: Food grade / Industrial grade / Pharma grade
 
Physical & Chemical Properties.:
    Food grade：White crystallized powder; Industrial grade：white crystallized plate.
    Melting at 121.5-123.5 C (starting sublime at 100 C);  boiling at 249 C.
    Slightly soluble in water, soluble in ethanol, very slightly soluble in benzene and acetone.
 
Application.:
     1. As the preservative, mainly use in fruit juice、drug、toothpaste、soft drink etc.
     2. Also used as raw material of dye intermediate, paint synthesis, plasticizer and flavors.
     3. It is also used in the manufacture of alkyd resins and drilling mud additive for crude oil recovery applications.
 
Packing.:
     1). In plastic internal bag and external knitted or paper-made bag with net weight 25 kg.
     2). According to customers' requirement
 
Quality standard.: (see table)
The quality conforms to BP / USP / E210 Standard.
Benzoic acid index
Items
Index
Content
99-100.5%
Loss on drying
≤0.5% after drying for three hours over sulphuric acid
Melting range
121.5-123.5℃
PH
About 4 (solution in water)
Arsenic
≤3 ppm
Lead
≤5 ppm
Mercury
≤1 ppm
Heavy metal (as pb)
≤10 ppm
Sulphated ash
≤0.05%
Positive sublimation test and test for benzoate
Qualified with regulations
Readily oxidizable substances
Qualified with regulations
Polycyclic acid
Pass test
Chlorinated organic compounds
≤300 ppm
Appearance of solution
Clarification, colorless
Shelf life
2 years
 

Other Products