Sodium Sulphite Food grade is accessible in white crystalline powder form. Its 10% solution has ph value of 9 to 11. Colorless in appearance, it has heavy metal, iron, free alkali and thiosulphate content in precise amount. In food processing arena, this substance is used as suitable preservative. As versatile chemical, this substance is also used as anti microbic factor, antioxidant and additive in the same industry. Its molar mass is 126.04 and its ph value in 5% solution is 9.8.
Characteristics | Specifications |
Physical Appearance | White Crystalline Powder |
Assay as Na2SO3% by mass | 96 % Min |
pH of 10% Solution | 9 to 11 |
Clarity of 10% Solution | Clear and colorless |
Insoluble Matter Max. | 0.05% (Pass) |
Iron (as Fe) Max. | 50ppm |
Heavy Metal (as Pb) Max. | 15ppm |
Thiosulphate % Max. | 200ppm |
Free Alkali | 0.15% Max |