Sodium Erythorbate CAS 6381-77-7
Histamine dihydrochloride CAS 56-92-8
22 9 月, 20202-Ketoglutaric acid CAS 328-50-7
22 9 月, 2020
Sodium Erythorbate Typical Properties
| Item | Specifications |
| Assay | 98.0%-100.5% |
| Description | White crystalline powder |
| Identification | Positive |
| Specific Rotation(at 25℃) | +95.5°～ +98° |
| pH(10%) | 5.5-8.0 |
| Loss on drying | ≤0.25% |
| Lead | ≤2ppm |
| Heavy metals(as Pb) | ≤10ppm |
| Arsenic | ≤3ppm |
| Mercury | ≤1ppm |
| Sodium | Passes test |
|
Ascorbic Acid/Colour reaction |
Freely soluble in water,very slightly
soluble in ethanol |
| Solubility | Passes test |
| Oxalate | Passes test |
Sodium Erythorbate Usage
Used as food antioxidants, anti-corrosion color additives and cosmetic antioxidants. It can consume oxygen in cosmetics, reduce high-valent metal ions, transfer the redox potential to the reduction range, and reduce the generation of undesirable oxidation products. It can also be used as anticorrosive color additive.
Sodium Erythorbate Packaging and Shipping
25KG/ carton.
Sodium Erythorbate Storage
keep low-temperature drying and avoid sunlight.
Sodium Erythorbate synthesis method
1. From equimolar benzenesulfinic acid and NaOH (40% sodium hydroxide aqueous solution), stir at 30-40 ℃ for 2 h, concentrate, cool to crystallize, filter, and vacuum dry to obtain the finished product.
2. Reduce benzenesulfonyl chloride, sodium metabisulfite, water and sodium hydroxide to sodium benzenesulfinate at pH=3.5～8.5, 50℃, decolorize, filter and cool to 15℃, separate sodium bisulfate, use 30 %Hydrochloric acid is acid-deposited into benzenesulfinic acid at 15-20℃, washed with water, and then neutralized with alkali to form a salt. Sodium benzenesulfinate is obtained as colorless flaky crystals [1].