Products Description

Ascorbyl sodium is a chemically synthesized antioxidant and preservative. Its chemical structure is similar to that of natural vitamin C (ascorbic acid), but it is more stable. It is mainly used in food, medicine and cosmetics. By inhibiting oxidation reactions and microbial growth, it extends the shelf life of products. At the same time, it has high safety and is permitted as a food additive in many countries.

D - Sodium D-isoascorbate (also known as erythorbic acid sodium, sodium isocitric acid) has the chemical formula C6H7O6Na·H2O and is called D-2,3,5,6-tetrahydroxy-2-hexenic acid-γ-lactone sodium salt.
Sodium D-isoascorbate is a white to yellowish-white crystalline or powder form, odorless, with a slightly salty taste. It is quite stable in the dry state in the air, but it is prone to oxidation in water solutions when exposed to air, metals, heat, or light. It is easily soluble in water, with a solubility of 55 g/100 mL. The pH of a 1% aqueous solution is 7.4, and it is almost insoluble in ethanol. The antioxidant property of sodium D-isoascorbate is the same as that of isocitric acid.
Sodium D-isoascorbate is a new type of biological food antioxidant, preservative, and color enhancer. It can prevent the formation of carcinogens - nitrosamines - in pickled foods, eliminate undesirable phenomena such as color change, odor, and turbidity in food and beverages. It is widely used as an antioxidant, preservative, and color enhancer in meats, fish, vegetables, fruits, alcoholic beverages, beverages, and canned foods. The main raw material is rice, and the product is obtained through microbial fermentation. Antioxidant property: The antioxidant capacity of sodium D-isoascorbate far exceeds that of vitamin C sodium. It has no vitamin enhancement effect, but it will not hinder the absorption and utilization of isocitric acid sodium by the human body. The human body can convert sodium D-isoascorbate into vitamin C.

Item	Standard	Results
Appearance	White or light yellow crystalline particles or powder	White crystalline powder
Odor	Odorless	Odorless
Assay, w/%	≥98.0	99.62
Specific Rotation [α]25D	+25.5°~+98.0°	+96.32°
PH Value	5.5~8.0	7.19
Loss on drying (%)	≤0.25	0.14
Lead(mg/kg)	≤5.0	0.8
Total Arsenic (As)(mg/kg)	≤3.0	0.7
Oxalate	Pass	Pass

Products Application

Food Industry 1.
It is widely used in meat products, beverages, canned foods, etc., to prevent discoloration, deterioration of taste and loss of nutrients. For example, it can reduce the amount of nitrite in pickled meats, thereby reducing the potential formation of carcinogens.
When used in combination with citric acid and lactic acid, it enhances the antioxidant effect.
Pharmaceutical Field 2.
As an antioxidant auxiliary material for injections or oral medications, it protects the active ingredients of the drugs.
Other Applications 3.
In cosmetics, it is used to stabilize easily oxidizable components (such as oils, fragrances); in industry, it is used in water treatment to prevent pipe corrosion.