PROPYL GALLATE
CAS 121-79-9
Chemical Formula C₁₁H₁₁O₃
Molecular Weight 194.20 g/mol
Propyl Gallate is a synthetic antioxidant used primarily as a food preservative to prevent the oxidation of fats and oils. It is the ester of gallic acid and propanol and is commonly used in food, cosmetics, and pharmaceutical products.
Derived from natural sources such as palm oil or synthesized chemically, this versatile compound is highly valued in the cosmetics, personal care, and pharmaceutical industries.Propyl Gallate helps extend the shelf life of products by inhibiting the degradation of fats and oils due to oxidative processes.
Industrial Uses
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Food Industry :
- Antioxidant in Fats and Oils: Propyl Gallate is widely used in food products, particularly in oils, fats, and processed foods, to prevent rancidity caused by oxidation. It is often found in products like margarine, salad dressings, and packaged snacks.
- Preservative in Processed Foods: It is also used in processed meats, beverages, and confectionery to maintain product quality and extend shelf life
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Cosmetic and Personal Care Products :
- Antioxidant in Skincare Products: Propyl Gallate is used in cosmetics and skincare formulations to prevent the oxidation of oils and active ingredients, helping to preserve the efficacy and stability of products such as creams, lotions, and shampoos.
- Preservative in Cosmetics:It is included in cosmetic formulations to prevent the degradation of fats and oils, maintaining the quality and safety of the products.
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Pharmaceutical Applications :
- Antioxidant in Pharmaceuticals: Propyl Gallate is used in the pharmaceutical industry to stabilize formulations that contain oils, such as oral suspensions and certain injectable drugs, by preventing oxidative degradation.
- Preservative in Pharmaceutical Products: It is also used as a preservative in some pharmaceutical products, helping to maintain the stability and shelf life of formulations.
Specifications
| CAS No | 121-79-9 |
|---|---|
| EC Number | 204-798-4 |
| Appearance | White to off-white crystalline powder |
| Molecular Weight | 194.20 g/mol |
| Molecular Formula | C₁₁H₁₁O₃ |
| Solubility | Soluble in ethanol, acetone, and chloroform; slightly soluble in water |
| Boiling Point | Not available |
| Odor | Odorless |
| Melting point | 122–126°C |
| Density | 1.26 g/cm³ |
| pH (1% Solution) | 5.0–7.0 |
| Assay | ≥99% |
| Heavy Metals | ≤10 ppm |