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Sodium Propyl Paraben Supplier

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Sodium Propyl Paraben
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Sodium Propyl Paraben

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Clarity of solution A 10% solution in water is clear, appendix 6.1.
Chlorides Not more than 330 ppm
Sulphate Not more than 0.12%
Water Not more than 5.0%
Assay on dried basis As C10H11NaO3)
Additional Test Loss on drying, w/w
PH Between 9.5 to 10.5, determined in a 0.1% w/v solution, appendix 8.11

Description : A white, crystalline powder, odourless or almost odourless; hygroscopic.

Solubility : Freely soluble in water and in ethanol (50%), sparingly soluble in ethanol (95%), practically in soluble in fixed oils.

Identification  :  

  • 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 Propyl Paraben or with the spectrum obtained  from Propyl Paraben RS.
  • The precipitate obtained in test A on ignition gives the reactions of sodium salts, appendix.

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