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Products

Butyl Paraben N.F


SYSTEM MANUAL
ISSUE NO : 01
Document No.
Revision No.
Effective date
Page
QAI/Q/03/45
00
1-Aug-05
1 of 1
BUTYL PARABEN N.F.
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Chemical Name

Butyl Hydroxy Benzoate

 Molecular Formula

C11H14O3  

 Molecular Weight

194.23


 Structural Formula

 

 CAS Number

94-26-8

 Reference

USP-25 / NF 20

 Packing

25 kg

 The Shelf-life

5 years

 Storage conditions and  precautions

Preserve in well-closed containers.

 Use Antimicrobial Preservative
 
NO.
Test
Observation
1.
 Description &  solubility

Small, colourless crystals or white powder. Very slightly soluble in water and in glycerine: freely soluble in acetone, in alcohol, in ether and in propylene glycol.

2.
 Identification

B.Infrared Absorption <197M>

3.
 Melting Range

Between 68°C and 72°C

4.

 Organic volatile  impurities

Method IV <467>: meets the requirements.

5.
 Acidity

Heat 0.75 g in 15 mL of water at80o for 1 minute, cool, and filter: the filtrate is neutral or acid to litmus. To 10 mL of the filtrate add 0.20 mLof 0.1 N sodium hydroxide and 2 drop of methyl red TS : the solution is yellow.

6.
 Loss on drying

Dry it over silica gel for 5 hours: it loses not more than 0.5 % of its weight.

7.
 Residue on  ignition

Not more than 0.05 %.

8.
 Assay on  anhydrous basis.

Not less than 99.0 % & Not more than 100.5 % w/w.

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