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Mubychem Group, established in 1976, is the pioneer manufacturer of Zinc Chloride, Ammonium Chloride, Calcium Chloride, Potassium Chloride, Sodium Acetate, Sodium Thiosulphate, Benzoic Acid, Pharmaceutical, Fragrance & Flavor chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India. |
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Benzoic Acid BP; Benzoic Acid USP Manufacturers
CAS No.:65-85-0, Molecular Weight: 122.1, Chemical Formula: C7H6O2
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Benzoic Acid
Technical & Pure
Also IP BP Ph. Eur. USP ACS AR LR FCC Food Grades
Benzoic Acid BP (Pharmaceutical)
C7H6O2 122.1 65-85-0DEFINITION
Benzoic acid contains not less
than 99.0 per cent and not more than the equivalent of
100.5 per cent of benzene carboxylic acid.
CHARACTERS
A white, crystalline powder or
colourless crystals,
odourless or with a very slight
characteristic odour, slightly soluble in
water, soluble in boiling water, freely soluble in alcohol and in fatty oils.
A. Melting point 121C to 124C.
B. Solution S (see Tests) gives reaction (a) of benzoates.
TESTS
Solution S
Dissolve 5.0 g in
alcohol and dilute to 100 ml with the same solvent.
Appearance of solution
Solution S is clear and colourless.
Carbonizable substances
Dissolve 0.5 g with shaking in 5 ml of
sulphuric
acid. After 5 min, the solution is not more intensely coloured than reference
solution.
Oxidizable substances
Dissolve 0.2 g in 10 ml of boiling
water. Cool, shake and filter. To the
filtrate add 1 ml of dilute sulphuric acid and 0.2 ml of
0.02 M potassium permanganate. After 5
min, the solution is still coloured pink.
Halogenated compounds and halides
All glassware used must be
chloride-free and may be prepared by soaking overnight in a 500 g/l
solution of nitric acid, rinsed with water and stored full of water. It
is recommended that glassware be reserved for this test.
Solution (a) Dissolve
6.7 g of the substance to be examined in a mixture of 40 ml of 1 M sodium
hydroxide and 50 ml of alcohol and dilute to 100.0 ml with water.
To 10.0 ml of this solution add 7.5 ml of
dilute
sodium hydroxide solution and 0.125 g of nickel-aluminium
alloy and heat on a water-bath for 10 min. Allow to cool to room
temperature, filter into a 25 ml volumetric flask and wash with three
quantities, each of 2 ml, of alcohol. Dilute the filtrate and washings
to 25.0 ml with water. This solution is used to prepare solution A.
Solution (b) In
the same manner, prepare a similar solution without the substance to be
examined. This solution is used to prepare solution B.
In four 25 ml volumetric flasks, place separately 10 ml of solution (a), 10 ml
of solution (b), 10 ml of chloride standard solution (8
ppm Cl) (used to prepare solution C) and
10 ml of water. To each flask add 5 ml of ferric ammonium
sulphate solution, mix and add
drop wise and with swirling 2 ml of nitric acid
and 5 ml of mercuric thiocyanate solution. Shake. Dilute the contents of
each flask to 25.0 ml with water and allow the solutions to stand in a
water-bath at 20 °C for 15 min. Measure at 460 nm the absorbance of
solution A using solution B as the compensation liquid, and the absorbance
of solution C using the solution obtained with 10 ml of water as the
compensation liquid. The absorbance of solution A is not greater than that
of solution C (300 ppm).
Heavy metals
12 ml of solution S complies with limit test B for
heavy metals (10 ppm).
Sulphated ash
Not more than 0.1 per cent, determined on 1.0 g.
Benzoic Acid USP
Benzoic AcidC7H6O2 122.12
Benzoic acid.
Benzoic acid [65-85-0].
Benzoic Acid contains not less than 99.5 percent and not more than 100.5 percent of C7H6O2, calculated on the anhydrous basis.
Identification— Prepare a
saturated solution of Benzoic Acid in water, and filter twice. To one portion of
the filtrate add ferric chloride TS: a salmon-colored precipitate is formed. To
a separate 10-mL portion of the filtrate add 1 mL of 7 N sulfuric acid and cool the mixture: a white
precipitate forms in about 10 minutes; this precipitate is soluble in ether.
Congealing range: between
121 and 123.
Water: not more than
0.7%, a 1 in 2 solution of methanol in pyridine being used as the solvent.
Readily
carbonizable substances— Dissolve 500 mg
in 5 mL of sulfuric acid TS: the solution has no
more color than Matching Fluid Q.
Residue on ignition: not
more than 0.05%.
Heavy metals— Dissolve
2.0 g in 25 mL of acetone, and add 2
mL of water. Add 1.2 mL
of thioacetamide-glycerin base TS and 2
mL of pH 3.5 Acetate Buffer, and allow
to stand for 5 minutes: any color produced is not
darker than that of a control made with 25 mL of
acetone, 2.0 mL of Standard Lead Solution,
and treated in the same manner. The limit is 10µg per g.
Readily
oxidizable substances— Add 1.5 mL of
sulfuric acid to 100 mL of water, heat to boiling,
and add 0.1 N potassium permanganate, drop wise, until the pink color persists for 30
seconds. Dissolve 1.00 g of Benzoic Acid in the hot solution, and titrate with
0.1 N potassium permanganate VS to a pink color that persists for 15 seconds:
not more than 0.50 mL of 0.10 N
potassium permanganate is consumed.
Benzoic Acid FCC
COOHC7H6O2 Formula wt 122.12
INS: 210 CAS: [65-85-0]
DESCRIPTION
Benzoic Acid occurs as white crystals, scales, or needles. It begins to
sublime at about 100° and is volatile with steam. One gram is soluble in 275
mL of water at 25°, in 20 mL
of boiling water, in 3 mL of alcohol, in 5
mL of chloroform, and in 3 mL
of ether. It is soluble in fixed and in volatile oils and is sparingly soluble
in hexane.
REQUIREMENTS
Identification:
Dissolve 1
g of sample in a 20:1 (v/v) mixture of water and 1 N sodium hydroxide,
filter the solution, and add about 1 mL of ferric
chloride TS. A buff-colored precipitate forms.
Assay: Not less than 99.5%
and not more than 100.5% of C7H6O2, calculated on the anhydrous basis.
Lead: Not more than 2.0
mg/kg.
Readily
Carbonizable Substances: Passes test.
Readily
Oxidizable Substances: Passes test.
Residue on Ignition: Not
more than 0.05%.
Solidification Point:
Between 121-123C.
Water: Not more than 0.7%.
ACS Specifications
American Chemical Society
Benzoic Acid ACS
C6H5COOHFormula Wt 122.12
CAS Number 65-85-0
REQUIREMENTS
Assay: 99.5% C6H5COOH
Freezing point: 122-123C
MAXIMUM ALLOWABLE
Residue after ignition: 0.005%
Insoluble in methanol: 0.005%
Chlorine compounds (as Cl): 0.005%
Sulfur compounds (as S): 0.002%
Heavy metals (as Pb): 5 ppm
Substances reducing permanganate: Passes test
Benzoic Acid BP
Benzoic Acid USP
Benzoic Acid manufacturers:
MUBY CHEMICALS
S-8, SARIFA MANSION, 2ND FLANK ROAD,
CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE) 91-22-23770100,
23726950, 23774610, 23723564. FAX: 91-22-23728264
e-mail:
info@mubychem.com
Cell Call
to Anmol: +91-9821870100
USA & Canadian Customers may Call
773-829-581
Copyright and Usual Disclaimer is
Applicable.
Last updated
07 December, 2011
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