Description :  
  White Crystalline Powder; Odourless or almost odourless hygroscopic
   
   
ApplicatIons:   
  Parabens are used as preservatives in food, cosmetics, sunscreens, shampoos and many other products. Parabens kill molds and fungi, and are used synergistically with bactericides to make broad spectrum antimicrobials.
   
   
Sodium Methyl Paraben  Passes IP / BP / USP  Parameters
   
 
 
Specifications:
 
Parameters

IP

BP

USP

Solubility

Freely Soluble in  water  sparingly  soluble in ethanol, practically insoluble in fixed oils

Freely Soluble in  water           sparingly soluble in alcohol, practically insoluble in methylene chloride

Freely Soluble in  water  sparingly soluble in alcohol, practically insoluble in methylene chloride

Formula

C8H7NaO3

C8H7NaO3

C8H7NaO3

Weight

174.13

174.13

174.13

Category

Pharmaceutical Aid
(Antimicrobial Preservative)

Antimicrobial Preservative

Antimicrobial Preservative

Identification

A,B  (APP: 3.1)

A,B,C,D,E

A,B

Acidity

NA NA NA

Clarity & Colour of Solution

10% Solution in water is clear

NA NA

Ph

9.5 to 10.5 (0.1% Solution)

9.5 to 10.5 (1% )

9.5 to 10.5

Chlorides

NMT: 330 ppm

NMT: 350 ppm

NMT: 350 ppm

Sulphate

NMT : 0.12%

NMT: 300 ppm

NMT: 0.12%

Related Substance

NA

By Chromatography

 

Sulphated Ash

NA NA NA

Water (by KF)

NA

NMT : 5.0%

NA

Assay

NLT : 99.0% NMT : 102.0%

NLT:99.0 NMT:101%

NLT 98.5 NMT:101.5%

 
NA =  Not Applicable,  NMT =  Not more than,  NLT =  Not Less than 
 
 
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