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Products

Propyl Paraben U.S.P


SYSTEM MANUAL
ISSUE NO : 01
Document No.
Revision No.
Effective date
Page
QAI/Q/03/18
01
1-Jul-07
1 of 1
PROPYL PARABEN U.S.P.
 Chemical Name

Propyl 4-Hydroxybenzoate

 Molecular Formula

C10H12O3

 Molecular Weight

180.20

 Structural Formula
 
 CAS Number

94-13-3

 Grade USP-30
 Packing

25 Kg.

 The Shelf-life

5 years

 Storage conditions and  precautions

Preserve in a well-closed containers.

 Use Antimicrobial Preservative
 
NO.
Test
Observation
1.
 Description

Small, colorless crystals or white powder.

2.
 Solubility Very slightly soluble in water, freely soluble in alcohol and in ether; slightly soluble in boiling water.
3.
 Identification

A. Infrared absorption <197M>.

B. Melting Range <741>:between 96°C and 99°C

4.

 Color of solution

The solution is clear and not more intensely colored than matching fluid G.

5.

 Acidity

Not more than 0.1 ml is required to produce a blue color.

6.  Residue on  Ignition,  (w/w) Not more than 0.1 %.
7.  Related Substances The intensity of any individual secondary spot in the chromatogram of the test solution is not greater than that of the principal spot obtained in the chromatogram of standard solution A (0.5 %)
8.
 Organic volatile  Impurities Method IV <467>. Meets the requirements.
9.
 Assay, (w/w) Not less than 98.0% and not more than 102.0% of C10H12O3.
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