1. Product Name: Sodium Sulfite.
2. CAS No.: 7681-57-4
3. MF: Na2SO3
4. EINECS No.: 231-821-4
5. Purity: 97%

6. Specification:
Na2SO3 ----------------------- 97% min
Fe ------------------------------ 0.003% max
Water insoluble content --- 0.02% max
Na2CO3------------------------ 0.01% max
Na2SO4 ----------------------- 2.5% max
NaCl --------------------------- 0.1% max