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Methyl Paraben I.P.
Methyl Paraben B.P.
Methyl Paraben E.P.
Methyl Paraben U.S.P.
Methyl Paraben N.F
Methyl Paraben Sodium I.P.
Methyl Paraben Sodium B.P.
Methyl Paraben Sodium E.P.
Methyl Paraben Sodium U.S.P.
Methyl Paraben Sodium N.F
Ethyl Paraben B.P.
Ethyl Paraben U.S.P.
Ethyl Paraben N.F
Propyl Paraben I.P.
Propyl Paraben B.P
Propyl Paraben E.P.
Propyl Paraben U.S.P.
Propyl Paraben N.F.
Propyl Paraben Sodium I.P.
Propyl Paraben Sodium B.P
Propyl Paraben Sodium E.P.
Propyl Paraben Sodium U.S.P.
Propyl Paraben Sodium N.F.
Benzyl Paraben E.P
Butyl Paraben B.P.
Butyl Paraben U.S.P.
Butyl Paraben N.F
Para Anisic Acid
Ortho Anisic Acid
2 - Ethoxy Benzoic Acid
4 - Ethoxy Benzoic Acid
5- Chloro Salicylic Acid
 
 
Methyl Paraben Sodium I.P.
A’
SYSTEM MANUAL
ISSUE NO : 01
Document No.
Revision No.
Effective date
Page
QAI/Q/03/19
02
05-Sep-08
1 of 1
SODIUM METHYL PARABEN I.P.
 
 Chemical Name Sodium Methyl 4-Hydroxybenzoate
 Molecular Formula C8H7NaO3
 Molecular Weight 174.13


 Structural Formula
 CAS Number 5026-62-0
 Packing 25 Kg, 20 kg(4 x 5 kg)
 The Shelf-life 3 years
 Storage conditions and precautions Store in a tightly closed containers.
 Use Antimicrobial Preservative
 
NO.
Test
Specifications
1.
  Description White, crystalline powder, odourless or almost odourless; hygroscopic.
2.
  Solubility Freely soluble in water, sparingly soluble in ethanol (95%); practically insoluble in fixed oils.
3.
  Identification

A.       Dissolve 0.5 gm in 5 ml of water and acidify to litmus paper with hydrochloric acid; a white precipitate is produced. Wash the precipitate with water and dry. The infrared absorption spectrum of the precipitate, appendix 5.4 is concordant with the reference spectrum of Methyl Paraben or with the spectrum obtained from Methyl Paraben RS.  \

B.    The precipitate obtained in test A on ignition gives the reactions of sodium salts, appendix 3.1
4.
  PH Between 9.5 to 10.5, determined in a 0.1% w/v solution, appendix 8.11
5.
 Appearance of solution A 10% solution in water is clear, or not more opalescence than Opalescence standard OS1 prepared by 5.0 ml of Opalescence standard & 95 ml of water .
6.
  Chloride Not more than 330 ppm
7.
  Sulphate Not more than 0.12 %
8.
  Water Not more than 5.0 %
9.
  Assay on dried  basis (As  C8H7NaO3) Between 99.0% to 102.0%