Description
The lauryl (dodecyl) ester of gallic acid, the longest-chain member of the gallate ester antioxidant family permitted for food use. Highest fat solubility of the three commercial gallate esters, providing strong partitioning into oil and fat phases of food, feed, cosmetic, and pharmaceutical systems.
White to slightly cream crystalline powder. Essentially insoluble in water; fully soluble in fats, oils, and most organic solvents.
We supply food-grade Dodecyl Gallate from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production.
Common market grades include Standard Food Grade (FCC and EP compliant, 98 percent assay minimum) and pre-blended Dodecyl Gallate with citric acid synergist systems.
Bulk and reduced-MOQ shipments. Batch-level COA covering assay, melting range, free gallic acid, heavy metals, and microbiology.
Introduction
Dodecyl Gallate (also known as Lauryl Gallate) completes the commercial gallate ester family alongside Propyl Gallate and Octyl Gallate. The twelve-carbon alkyl chain produces the highest fat solubility of the three esters, an advantage in highly lipophilic systems.
Industrial production proceeds by esterification of gallic acid with n-dodecanol (lauryl alcohol) under acid catalysis, followed by purification and recrystallization.
Regulated as E312 in the EU (with permitted levels of 200 mg per kg of fat, alone or in combination with other gallates and BHA) and approved by JECFA with an Acceptable Daily Intake of 0.5 mg per kg body weight. Not approved for direct food use in the United States but permitted in cosmetics and as a packaging-film antioxidant.
The antioxidant mechanism is the same as the other gallate esters: hydrogen-atom donation from the three phenolic hydroxyl groups to peroxyl radicals, terminating the lipid-oxidation chain reaction. The choice between Propyl, Octyl, and Dodecyl Gallate is driven by required partition coefficient and solubility in the target matrix.
Strategic position is in highly lipophilic food, feed, cosmetic, and pharmaceutical systems where the longer alkyl chain delivers performance that the shorter esters cannot match. Volume is smaller than Propyl Gallate but the segment is stable and price-supported by application-specific requirements.
Where it is used
- Edible vegetable oils and animal fats: high-fat-content oxidation protection
- Fried snack products, including instant noodle frying oil
- Margarine, butter, and shortening applications
- Confectionery fillings containing fats and chocolate products
- Roasted nuts and nut-based confectionery
- Cosmetic skincare, sunscreen, and lipid-based cosmetic formulations
- Pharmaceutical oil-based and topical preparations
- Animal feed and pet food: protects fats and fat-soluble vitamins from oxidative degradation
- Pre-blended antioxidant systems combining Dodecyl Gallate with citric acid for synergy
Technical data
| Item | Specification |
|---|---|
| Appearance | White to slightly cream crystalline powder |
| Assay (HPLC) | ≥ 98.0% |
| Melting range | 95 °C to 98 °C |
| Loss on drying | ≤ 0.5% |
| Free gallic acid | ≤ 0.5% |
| Residue on ignition | ≤ 0.1% |
| Heavy metals (as Pb) | ≤ 10 mg/kg |
| Arsenic | ≤ 3 mg/kg |
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