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Description : |
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White Crystalline Powder; Odourless or almost odourless hygroscopic, Colourless Crystals |
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ApplicatIons: |
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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. |
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Methyl Paraben: |
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Passes IP / BP / USP Parameters |
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| Specifications: |
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| Parameters |
IP |
BP |
USP |
Solubility |
Freely Soluble in Ethanol (95%), in ether and in methanol, very slightly soluble in water. |
Very Slightly soluble in water, freely soluble in alcohol and in methanol. |
Very slightly soluble in water, freely soluble in alcohol and in methanol. |
Formula |
C8H803 |
C8H803 |
C8H803 |
Weight |
152.15 |
152.15 |
152.15 |
Category |
Pharmaceutical Aid
(Antimicrobial Preservative) |
Antimicrobial Preservative |
Antimicrobial Preservative |
Identification |
A,B,C,D,E (APP: 5.4) |
A,B,C,D |
A,B |
Acidity |
NMT:0 1ml of 0.1M NaOH is required |
NMT:0.1ml of 0.1M
NaOH is required to change the colour |
NMT:0.1ml of 0.1M NaOH is required to change the colour |
Clarity & Colour of Solution |
Not more intensely coloured than reference solution |
NA |
NA |
pH |
NA |
NA |
NA |
Chlorides |
NMT: 500 ppm |
NA |
NA |
Sulphate |
No Turbidity is produced |
NA |
NA |
Related Substance |
By Chromatography Test |
By Chromatography Test |
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Sulphated Ash |
NMT : 0.1% |
NMT : 0.1% |
NA |
Water (by KF) |
NMT : 5.0% |
NA |
NA |
Assay |
NLT : 99.0% NMT : 101.0% |
NLT:98.0 NMT:101% |
NLT 99.0
NMT:101.5% |
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| NA = Not Applicable , NMT = Not more than, NLT = Not Less than |
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