Propyl Parabene
EP, USP (Tested for Endotoxin & Microbes)
CAS #:
94-13-3
Molecular Formula:
C10H12O3
Synonym:
propyl 4-hydroxybenzoate, Propyl-p-hydroxybenzoate, Benzoic acid, 4-hydroxy-, propyl ester, p-Hydroxybenzoic acid propyl ester
Molecular Weight:
180.2 g/mol
Overview
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:
- Keep container tightly closed in a dry and well-ventilated place.
- Store at room temperature in the original container.
- Store away from incompatible materials.
Pack Sizes: 0.5 Kg
