Propylparaben sodium
CAS 35285-69-9
EC 252-488-1
Formula C10H12O3.Na
MW 202.18 g/mol
Salts & Minerals Personal Care & CosmeticsPharmaceuticals & HealthcareFood & Nutrition Preservation & BiocideUV Protection & StabilizationFlavoring & AcidulantCatalysis
Description
Propylparaben Sodium (CAS 35285-69-9), also known by trade names Nipasol Sodium and Nipasol M Sodium, is the sodium salt form of propylparaben, a paraben-class antimicrobial preservative. Its water-soluble nature makes it a practical alternative to the free acid form in aqueous formulations.
In cosmetic and personal care formulations, it inhibits the growth of fungi and gram-positive bacteria by disrupting cell membrane function, typically used at concentrations of 0.01–0.3%. In pharmaceutical preparations, it serves as a preservative in oral suspensions and topical products, often combined with methylparaben sodium for broader-spectrum protection.
Propylparaben Sodium is supplied as a white hygroscopic crystalline powder conforming to Ph.Eur. and USP/NF monographs, with REACH compliance applicable for EU trade. It falls under HS code 2918 29 00 and is available in standard drum and bag packaging suited to industrial procurement volumes.
In cosmetic and personal care formulations, it inhibits the growth of fungi and gram-positive bacteria by disrupting cell membrane function, typically used at concentrations of 0.01–0.3%. In pharmaceutical preparations, it serves as a preservative in oral suspensions and topical products, often combined with methylparaben sodium for broader-spectrum protection.
Propylparaben Sodium is supplied as a white hygroscopic crystalline powder conforming to Ph.Eur. and USP/NF monographs, with REACH compliance applicable for EU trade. It falls under HS code 2918 29 00 and is available in standard drum and bag packaging suited to industrial procurement volumes.
Physical Properties
| Melting Point | 302°C |
| Density | 1.24 g/cm3 (25 °C) |
| Appearance | White or almost white, hygroscopic, crystalline powder. |
| Color | White to Off-White |
| Form | Solid |
| Water Solubility | 1000g/L at 23℃ |
| Vapor Pressure | 0.001Pa at 20℃ |
| pH | 9.5-10.5 (1g/l, H2O, 20°C) |
| Log P | 0.27 at 23℃ |
Safety & Handling (Learn More)
Danger GHS05
H
H318H412
P
P273P280P317P501P264+P265P305+P354+P338
Trade & Regulatory
| HS Code | 2918 29 00 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
Sodium Propylparabensodium 4-propoxycarbonylphenolateNIPASOL SODIUMNipasol M SodiumSodium propyl parabenPROPYL PARABEN SODIUM SALTSODIUM PROPYL HYDROXYBENZOATE
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