Propylparaben is used as an antimicrobial preservative. It is a Standardized Chemical Allergen. The physiologic effect of propyl paraben is by means of Increased Histamine Release, and Cell-mediated Immunity. The chemical classification of propylparaben is Allergens.
Characters | Unit | Specification |
---|---|---|
Appearance | white or almost white, crystalline powder | |
Assay | % | 98.0 – 102.0 |
Identification A (IR) | complies | |
Identification B (Melting point) | °C | 96 - 99 |
Appearance of solution | complies | |
Colour of solution (USP) | complies | |
Acidity | ml of 0.1M NaOH | max. 0.1 |
Residue on Ignition (USP) | % | max. 0.1 |
Sulphated ash (Ph. Eur.) | % | max. 0.1 |
Related substances | ||
Impurity A | % | max. 0.5 |
Unspecified impurities | % | max. 0.5 |
Total | % | max. 1.0 |
Total aerobic microbial count | cfu/g | max. 100 |
Total yeasts and moulds count | cfu/g | max. 50 |
E.coli | cfu/g | absent in 1g |
Pseudomonas aeruginosa | cfu/g | absent in 1g |
Staphylococcus aureus | cfu/g | absent in 1g |
Salmonella | cfu/g | absent in 25g |
Residual Solvents (Ph. Eur., USP) | According to requirements |
Shelf Life/Retest Date: Propyl Paraben can be kept for at least 3 years if stored under recommended conditions.
Storage/Shipping Conditions:
Pack Sizes: 0.5 Kg