Sodium Ascorbate
- Details
- parameter
Molecular Formula
C6H7NaO6
Appearance and Properties
Sodium ascorbate is white to light yellow crystalline solid, odorless, slightly salty. 1g products can be dissolved in 2mL water. Decomposition temperature of 218 ℃, stable in dry conditions, deepen in color when exposed to light, slowly oxidized and decomposed in moisture or in aqueous solution. More soluble in water than ascorbic acid (62g/100mL), 10% aqueous solution pH is about 7.5. Use of vitamin supplements, antioxidants.
Uses
As a food additive, it has the E number E301 and is used as an antioxidant and an acidity regulator. Producing various pharmaceutical formulations, food additives, feed additives. Sodium ascorbate is widely used in food, beverage, cultivation and animal feed additives, and other fields.
Main applications:
1. Meat: as color additives to maintain color.
2. Fruit storage: spray or use with citric acid to keep color and flavor, extend shelf life.
3. Canned products: add to the soup before canning to maintain color and flavor.
4. Bread: keep the color, natural flavor and extend shelf life.
5. As additives in nutrient.
6. Feed additives.
| ITEMS | SPECIFICATIONS | UNITS |
| Appearance | White to yellowish crystals or crystalline powder | |
| Solubility | Freely soluble in water, very slightly soluble in ethanol, insoluble in chloroform | |
| Identification A | A red precipitate is formed | |
| Identification B | IR | |
| Identification C | Positive to reaction of sodium ascorbate | |
| Specific Optical Rotation | 103 - 106 ° | |
| Clarity and Color of Solution | Clear, not more intensely than BY6 | |
| Oxalic Acid(Impurity E) | <=0.3 | % |
| Sulphate | <=150 | ppm |
| Copper | <= 5 | ppm |
| Lead | <= 1.0 | ppm |
| Arsenic | <= 1.0 | ppm |
| Mercury | <= 0.5 | ppm |
| Iron | <= 2 | ppm |
| Nickel | <= 1 | ppm |
| Loss on Drying | <= 0.25 | % |
| Heavy Metals | <=0.0003 | % |
| pH(10%, W/V) | 7.0 - 8.0 | - |
| Assay (on the dried basis) | 99.0 - 101.0 | % |
| Residual Solvents(as methanol) | <= 250 | ppm |
| Total Plate Counts | <= 1000 | CFU/g |
| Yeasts & Moulds | <= 100 | CFU/g |
| Escherichia.Coli | Absence in 1g | |
| Salmonella | Absence in 25g | |
| Staphylococcus Aureus | Absence in 25g | |
| Impurity C | <= 0.15 | % |
| Impurity D | <= 0.15 | % |
| Unspecified Iimpurities | <= 0.10 | % |
| Total Impurities other than C & D | <= 0.2 | % |
| Cadmium | <= 0.5 | ppm |
