Offered in white crystalline powder form, Sodium Propylparaben is pharmaceutical grade substance that has 3 years of storage life. Its molar mass is 202.18 gram and it is hygroscopic by nature. It is used as preservative in medical products meant for topical application purpose. Sodium Propylparaben easily dilutes in water and is slightly soluble in ethanol. It does not dilute in methylene chloride. Ph level of this product ranges between 9.5 to 10.5. It has no smell and it can be stored at room temperature.
PRODUCT: Sodium Propyl Paraben
TYPICAL PROPERTIES:
CHARACTERS:
Sr. no. | Characteristic | Test Method | Specification |
1 | Appearance | Visual | White or almost white hygroscopic crystalline powder |
2 | Solubility | BP | Freely Soluble in water, sparingly soluble in ethanol (96 per cent), practically insoluble in methylene chloride. |
IDENTIFICATION (as per BP / Ph. Eur.):
Ref. alphabet | Identification | Test Method | Specification |
B | Infrared absorption | BP | Matches with standard |
D | Reaction of sodium salt | BP | To comply with the monograph |
TESTS:
Sr. no. | Test | Test Method | Specification |
1 | Appearance of solution | BP | A 10 % w/v solution in carbon dioxide-free water clear and not more intensely coloured than BY 6. (Determined on 5.0 gm) |
2 | pH | BP | 9.5 10.5 |
3 | Chloride, ppm | BP | Not more than 350 |
4 | Sulphate, ppm | BP | Not more than 300 |
5 | Heavy metals, ppm | BP | Not more than 10 |
6 | Water, % (determined on 0.5 g) | BP | Not more than 5.0 |
7 | Assay by HPLC (as C10H11NaO3), % | BP | 94 102 (OAB) |
8 | Impurity A: Impurities, % (HPLC) | BP | Not more than 4.0 |
9 | Unspecified impurities, % (HPLC) | BP | Not more than 0.5 |
10 | Sum of impurities other than A, % (HPLC) | BP | Not more than 1.0 |
PACKING: 25 kg bags
Synonyms are Propyl Paraben Sodium and Sodium propyl p-hydroxybenzoate
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