Produtcts
Product name: Benzoic acid
CAS No.: 65-85-0
Molecular formula: C7H6O2
Structural formula:
Properties: Flaky or needle shape crystal, with benzene and formaldehyde smell; lightly soluble in water; soluble in ethyl alcohol, diethyl ether, chloroform, benzene, carbon disulfide and carbon tetrachloride; melting point(℃): 121.7 ; boiling point (℃): 249.2; saturated vapor pressure(kPa): 0.13(96℃); flashing point (℃): 121; ignition temperature (℃): 571; lower explosive limit%(V/V): 11; refractive index: 1.5397nD
Main uses: Benzoic acid is used as bacteriostatic agent of emulsion, toothpaste, jam and other foods; mordant of dyeing and printing; intermediate of pharmaceutical and dyes; for preparation of plasticizer and perfume; steel equipment antirust agent
Preparation formula:
Main index:
|
Standard item |
chinese pharmacopoeia 2010 |
British Pharmacopoeia BP 98—2009 |
United States Pharmacopeia USP23—32 |
food additive GB1901-2005 |
E211 |
FCCV |
food additive NY/T1447-2007 |
|
appearance |
white flaky or needle shape crystal |
colorless crystal or white crystal powder |
— |
white crystal |
white crystal powder |
white flaky or needle shape crystal\ |
white crystal |
|
qualification test |
passed |
passed |
passed |
passed |
passed |
passed |
passed |
|
dry basis content |
≥99.0% |
99.0-100.5% |
99.5-100.5% |
≥99.5% |
≥99.5% |
99.5%-100.5% |
≥99.5% |
|
solvent appearance |
— |
clear, transparent |
— |
— |
— |
— |
— |
|
readily oxidizable substance |
passed |
passed |
passed |
passed |
passed |
passed |
passed★ |
|
readily carbonizable substance |
— |
not dark than Y5(yellow) |
not dark than Q(pink) |
passed |
passed |
passed |
— |
|
heavy metal (Pb) |
≤0.001% |
≤10ppm |
≤10ug/g |
≤0.001% |
≤10mg/kg |
— |
≤0.001% |
|
residue on ignition |
≤0.1% |
— |
≤0.05% |
0.05％ |
— |
≤0.05% |
— |
|
melting point |
121-124.5ºC |
121-124ºC |
121-123ºC |
121-123ºC |
121.5-123.5ºC |
121-123℃ |
121-123℃ |
|
chlorine compound |
— |
≤300ppm |
— |
≤0.014% |
≤0.07% () |
— |
≤0.014%★ |
|
arsenic |
— |
— |
— |
≤2mg/Kg |
≤3mg/kg |
— |
≤2mg/Kg |
|
phthalic acid |
— |
— |
— |
passed |
— |
— |
≤100mg/kg★ |
|
sulfate |
|
≤0.1% |
— |
— |
≤0.05% |
— |
— |
|
loss on drying |
— |
— |
≤0.7% (moisture) |
≤0.5% |
≤0.5% |
≤0.7% |
≤0.5% (moisture) |
|
mercury |
— |
— |
— |
— |
≤1mg/kg |
— |
— |
|
lead |
— |
— |
— |
— |
≤5mg/kg |
≤2.0mg/kg☆ |
— |
|
biphenyl |
— |
— |
— |
— |
— |
— |
≤100mg/kg★ |
|
Level/item |
premium grade |
top grade |
|
appearance |
white flaky solid |
white or light yellow flaky solid |
|
content, % ≥ |
99.5 |
99.0 |
|
chromaticity ≤ |
20 |
50 |
|
melting point, ℃ ≥ |
121 |
|
Packaging: woven polypropylene bag with inner polythene film bag
Packaging specification: 25kg, 850*500mm
