Description

L-Ascorbyl 2,6-Dibutyrate is a lipophilic ester derivative of ascorbic acid (Vitamin C). This chemical modification significantly enhances its stability and solubility in lipid-based systems, making it a highly effective antioxidant for challenging formulations. It is primarily sought after by manufacturers in the food, cosmetic, and nutraceutical industries seeking to protect oils, fats, and other non-aqueous ingredients from oxidative rancidity and degradation.

Application

• Food & Beverage Antioxidant: Used to stabilize edible oils, fats, margarine, and fat-containing food products to extend shelf life and prevent off-flavors.
• Cosmetic & Personal Care: Incorporated into creams, lotions, lipsticks, and other oil-phase cosmetic formulations as a stabilizer and antioxidant to protect active ingredients and base oils.
• Nutraceutical & Pharmaceutical: Serves as a lipid-soluble source of Vitamin C activity in softgel capsules, oil-based supplements, and topical pharmaceutical preparations.
• Animal Feed Additive: Employed as a stabilized Vitamin C source in premixes and feeds for aquaculture and other livestock to support health and growth.
• Industrial Applications: Functions as an antioxidant in lubricants, greases, and other industrial oils to inhibit oxidation and maintain performance.

Basic Information

Product Name	L-Ascorbyl 2,6-Dibutyrate
CAS No.	4337-04-6
Molecular Formula	C14H22O8
Molecular Weight	318.32 g/mol
Synonyms	Ascorbyl Dibutyrate; Vitamin C Dibutyrate; L-Ascorbic Acid 2,6-Dibutyrate; 2,6-Di-O-butyryl-L-ascorbic acid; Butyryl Ascorbate; E-304(ii) (when used as a food additive); Ascorbyl Dipalmitate analog (lipophilic derivative); 3-Oxo-L-gulofuranolactone 2,6-dibutyrate
EINECS	224-408-5

Quality Control

Our L-Ascorbyl 2,6-Dibutyrate is produced under strict quality management systems. It can be manufactured to meet various grade requirements, including Food Grade (FCC) and Cosmetic Grade specifications. Every batch undergoes rigorous analytical testing, including assay, identification, and impurity profiling. A Certificate of Analysis (COA) detailing purity, physical characteristics, and compliance with relevant specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This product is easily oxidized; for long-term storage, keeping the container under an inert atmosphere (e.g., nitrogen) is recommended to maintain optimal purity and efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	116 - 122 °C
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.