CAS No.: | 7757-83-7 |
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Formula: | Na2so3 |
EINECS: | 231-821-4 |
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Appearance: White Powde
Purity: % 99min
PH :7-10 for Normal grade. PH:6-8 for viscose grade
Properties: white fine crystal or powder, easily soluble in water; absorb moisture; odorless, non-toxic.
Term | Quality Index | |
Industry Grade | Food Grade | |
Purity ( As Na2SO3) | 96.0% min | 98.0% min |
Sodium sulphate ( SO4) | 2.5% max | 1.5% max |
Chlorides ( As NaCL) | 0.5% max | 0.1% max |
Arsenic ( As ) | - | 0.0002% max |
Heavy metals ( As Pb ) | - | 0.0005% max |
Iron (Fe) | 0.005% max | 0.002% max |
Water insolubles | 0.05% max | 0.02% max |
Henan Eastar Chem. & Tech. Co., Ltd. is a professional and comprehensive distributor of chemical products,such as Sodium Thiosulphate, Glycerol Monostearate, Sodium Diacetate, etc. Having been engaged in the international business for 20 years, we are fully experienced and have a perfect quality control system. With decades' of devotion to our work, our professional service has won a good reputation among our cooperating partners at home and abroad.