CAS · 35285-69-9
Product Overview
Sodium propylparaben, with the Chemical Abstracts Service (CAS) number 35285-69-9, is the sodium salt of propylparaben, a paraben ester. Sodium propylparaben is widely used as a preservative in cosmetics, personal care products, pharmaceuticals, and food due to its antimicrobial properties. It effectively inhibits the growth of bacteria, fungi, and yeast, extending the shelf life of products.
Product Specifications
| Property | Specification |
|---|---|
| Grade | EP9.0 |
| Appearance | White or almost white, hygroscopic, crystalline powder |
| Identification | A. Melting point: 96-99°C B. Infrared spectrum matches with the spectrum of propyl parahydroxybenzoate CRS. C. Thin-layer chromatography D. Solution test |
| Clarity and Color of Solution | Clear and Transparent |
| Assay (on dry base) | 94.0-102.0% |
| pH | 9.5-10.5 |
| Sulphates | 300 ppm max |
| p-Hydroxybenzoic Acid | 4.0% max |
| Unknown Impurities A | 0.5% max |
| Total Impurities | 1.0% max |
| Organic Volatile Impurities | 3000 ppm max |
| Moisture | 5% max |
| Chloride | 350 ppm max |
| Heavy Metal (Pb) | 10 ppm max |
Applications
1. Cosmetics and Personal Care:
- Preservative: Sodium propylparaben is commonly used in cosmetics, skincare products, shampoos, and lotions to prevent microbial contamination and spoilage.
- Stabilizer: It helps maintain the stability and integrity of formulations, ensuring product safety and efficacy.
2. Pharmaceuticals:
- Drug Preservation: It is used as a preservative in topical creams, ointments, and oral medications to prevent microbial growth and extend shelf life.
- Injectable Solutions: Sodium propylparaben is used in some injectable formulations to ensure sterility.
3. Food Industry:
- Food Preservative: It is used in certain food products, such as baked goods, beverages, and dairy products, to inhibit mold and yeast growth.
- Packaging: Sodium propylparaben is sometimes incorporated into food packaging materials to prevent microbial contamination.
4. Industrial Applications:
- Paints and Coatings: It is used as a biocide in paints and coatings to prevent microbial growth and spoilage.
- Adhesives: Sodium propylparaben is added to adhesives and sealants to extend their shelf life.
Benefits
1. Effective Antimicrobial Properties:
- Sodium propylparaben丨35285-69-9 is highly effective against a broad spectrum of microorganisms, including bacteria, fungi, and yeast, making it a reliable preservative.
2. Stability:
- It is stable under a wide range of pH and temperature conditions, ensuring its effectiveness in various formulations.
3. Cost-Effectiveness:
- As a commercially available preservative, sodium propylparaben is relatively inexpensive, making it accessible for industrial and consumer use.
4. Versatility:
- Its applications span cosmetics, pharmaceuticals, food, and industrial products, highlighting its versatility.
5. Low Concentration Requirement:
- Sodium propylparaben is effective at low concentrations, minimizing its impact on the overall formulation.
Conclusion
Sodium propylparaben丨35285-69-9 is a widely used preservative with applications in cosmetics, pharmaceuticals, food, and industrial products. Its effective antimicrobial properties, stability, and cost-effectiveness make it a valuable tool for extending the shelf life and ensuring the safety of various formulations. While it is generally considered safe, ongoing research and regulatory oversight are essential to address potential health and environmental concerns. As industries continue to prioritize product safety and sustainability, sodium propylparaben will remain a key component in the development of safe and effective products. Proper handling and regulatory compliance ensure its benefits are maximized while minimizing risks.
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