タイトルまたは説明

Benzyl Alcohol BP

C7H8O ... **8.1 ... *******6
Benzyl Alcohol BP

DEFINITION
Phenylmethanol
Content
*8.0 per cent to **0.5 per cent.

CHARACTERS
Appearance
Clear, colourless, oily liquid.
Solubility
Soluble in water, miscible with ethanol (*6 per cent) and with fatty and essential oils.
Relative density
1.**3 to 1.**9.

IDENTIFICATION
Infrared absorption spectrophotometry.
Comparison: benzyl alcohol  CRS.

TESTS
Appearance of solution
Shake 2.0 ml with *0 ml of water. It dissolves completely. The solution is clear and colourless.
Acidity
To *0 ml add *0 ml of ethanol (*6 per cent) and 1 ml of phenolphthalein solution.  Not more than 1 ml of 0.1 M sodium hydroxide is required to change the colour of the indicator to pink.
Refractive index
1.**8 to 1.**1.
Peroxide value
Maximum 5.
Related substances
Gas chromatography to pass the tests

Benzyl Alcohol USP NF

C7H8O **8.*4
Benzenemethanol.
Benzyl alcohol USP [*******6].

Benzyl Alcohol contains not less than *8.0 percent and not more than **0.5 percent of C7H8O.

Labeling— Where Benzyl Alcohol is intended for use in the manufacture of injectable dosage forms, it is so labeled.

Clarity of solution—
Test solution— Dissolve 2.0 g of Benzyl Alcohol in *0 mL of water, and mix.
To pass the test as per monograph
The Test solution shows the same clarity as that of water, or its opalescence is not more pronounced than that of Reference suspension.
Color of solution—
Test solution— Use the Test solution prepared in the test for Clarity of solution.
To pass the test as per monograph
Test solution has the color of water.
Identification— Infrared Absorption **7F , on un-dried specimen.
Peroxide value: not more than 5.
Refractive index: between 1.**8 and 1.**1 at *0.
Acidity— Neutralize *0 mL of alcohol containing 1 mL of phenolphthalein TS with 0.*0 N sodium hydroxide. Dissolve *0 mL of Benzyl Alcohol in *0 mL of the neutralized alcohol, and titrate with 0.*0 N sodium hydroxide to the first appearance of a pink color that persists for not less than *0 seconds: not more than 1.0 mL is consumed.
Limit of nonvolatile residue— [NOTE—Ensure that the Benzyl Alcohol to be examined complies with the test for Peroxide value before performing this test.] Evaporate *0.0 g of Benzyl Alcohol on a water bath to dryness, and dry the residue at **5 for 1 hour. Cool in a desiccator, and weigh. The residue weighs not more than 5 mg: not more than 0.*5% of nonvolatile residue is found.
Related compounds—
Test solution— Use the Benzyl Alcohol specimen under examination.
To pass the test as per monograph

Benzyl Alcohol ACS Analytical Reagent

Benzenemethanol C6H5CH2OH
Formula Wt **8.*4
CAS Number *******6

REQUIREMENTS
Assay:
*9.0% C6H5CH2OH

MAXIMUM ALLOWABLE
Color (APHA): *0
Residue after ignition: 0.**5%
Acetophenone (C6H5COCH3): 0.*2%
Benzaldehyde (C6H5CHO): 0.*1%