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Benzoic Acid

Benzoic acid is an aromatic acid organic compound and the simplest aromatic acid with the molecular formula of C7H6O2. It was originally made from benzoin gum, so it is called benzoic acid. The melting point is 122.13 ℃, the boiling point is 249.2 ℃, and the relative density (15/4 ℃) is 1.2659. The appearance is white acicular or scaly crystal. It will sublimate above 100 ℃. Slightly soluble in cold water and hexane, soluble in hot water, ethanol, ether, chloroform, benzene, carbon disulfide, turpentine, etc.
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TECHNICAL PARAMETERS

ITEM VALUE
Sublimation temperature(℃) 100
Refractive index 15 ℃ 1.53974
131.9 ℃ 1.504
Critical constant Temperature(℃) 479
Pressure(kPa) 4468.4
Density(g/cm3) 0.358
Compressibility factor 0.244
Eccentricity factor 0.62
Dissociation constant25 ℃(Ka) 6.339X10-5
Liquid density(g/cm3) 130 ℃ 1.078
160 ℃ 1.049
190 ℃ 1.019
220 ℃ 0.9873
Vapor pressure(kPa) 96.0 ℃ 0.1
146.7 ℃ 2.7
186.2 ℃ 13.3
249.2 ℃ 101.3
Molar heat capacity[J/(mol·℃)] 180 ℃ 232.95
210 ℃ 240.91
240 ℃ 248.99
270 ℃ 257.32
Latent heat of evaporation(J/mol) 130 ℃ 59323
160 ℃ 57355
190 ℃ 55270
220 ℃ 53043
Solubility in water(g/100g) 0 ℃ 0.17
25 ℃ 0.34
50 ℃ 0.85
80 ℃ 2.75
Gas viscosity(mPa·s) 400K
86.78x10-4
600K 129.44x10-4
800K 170.19x10-4
Liquid viscosity(mPa·s) 130 ℃ 1.29
160 ℃ 0.9
190 ℃ 0.659

APPLICATION

      Benzoic acid exists widely in nature in the form of free acid, ester or its derivatives. It is mainly used to prepare sodium benzoate preservative, and to synthesize drugs and dyes; It is also used to make plasticizers, mordants, fungicides and spices. It can be obtained by direct oxidation of toluene in the presence of manganese dioxide; Or prepare phthalic anhydride by decarboxylation with water vapor.


              


PACKAGE: 25KGS/BAG

        BENZOIC ACID         benzoic acid

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