Propyl Gallate (CAS 121-79-9) Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
| Parameter | Propyl Gallate | Common Alternatives (BHA/BHT) |
|---|---|---|
| CAS Number | 121-79-9 | 25013-16-5 (BHA) |
| Molecular Formula | C10H12O5 | C11H16O2 (BHT) |
| Molecular Weight | 212.20 | 220.35 (BHA) |
| Melting Point | 146–149°C | 48–55°C (BHT) |
| Solubility | 0.35 g/100 mL in water High in ethanol |
Insoluble in water |
| Antioxidant Efficiency* | Superior in lipid systems | Better in baked goods |
*Based on GB 2760-2011 food additive standards
2. Key Applications
2.1 Food Industry
- Edible Oils & Fats: Extends shelf-life by 40–60% in vegetable oils at 0.01–0.02% concentration
- Processed Meats: Reduces lipid oxidation in sausages by 70% when used with 0.005% citric acid
- Bakery Products: Maintains freshness in commercial biscuits for 9–12 months
2.2 Cosmetics
- Stabilizes vitamin A derivatives in anti-aging creams
- Prevents rancidity in natural oil-based formulations
3. Usage Scenarios
3.1 Optimal Usage Conditions
| Application | Concentration | Temperature Range | Synergistic Agents |
|---|---|---|---|
| Industrial Frying Oils | 0.02% | 160–190°C | 0.01% ascorbyl palmitate |
| Pharmaceutical Coatings | 0.1–0.5% | 20–25°C | α-tocopherol |
3.2 Compatibility Notes
- Avoid direct contact with Fe³⁺/Cu²⁺ ions (causes purple discoloration)
- pH stability range: 4.0–6.5 in aqueous systems
4. Industry Case Studies
4.1 Snack Food Manufacturer (Wuhan, China)
- Challenge: 30% product returns due to rancidity in spicy potato chips
- Solution: 0.008% PG + 0.004% rosemary extract
- Result: 18-month stable shelf life at 25°C
4.2 Cosmetic Brand (Shanghai)
- Issue: Natural serum formulation turning rancid within 3 months
- Implementation: 0.2% PG in argon-blanketed packaging
- Outcome: 24-month stability with no sensory changes
5. Contact for Technical Support
Email: info@vivalr.com
Phone: (86) 15866781826
Request formulation optimization or bulk pricing:
- Custom antioxidant blends
- GMP-certified production
- Regulatory compliance documentation
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