Sodium Hydrosulfite Purity:85%,88%,90% Package:50kg iron drums Place of origin: Zhejiang province CAS NO:7775-14-6

Sodium hydrosulfite.

Sodium Dithionite is a free – flowing, dry, white material available in a variety of grade each with a different level of sodium dithionite. It usually used in textile, pulp and paper, leather, foods and beverages, polymers, chemical processing, water treatment, gas purification and environment improvement.

Parameter	Grade
Standard: HG/2074-2004	90%	88%	85%	85%（food grade）
	Typical	Typical	Typical	Typical
Na2S2O4	90.89%	89.0%	86.51%	86.94%
Na2S2O5	6.59%	6.68%	6.89%	6.57%
Na2CO3	1.69%	3.3%	5.7%	5.59%
Na2S2O3	0.17%	0.19%	0.42%	0.39%
Na2SO3	0.22%	0.20%	0.38%	0.35%
Fe	15ppm	13ppm	18ppm	11ppm
Water Insolubles	0.05%	0.04%	0.04%	0.01%

Sodium Hydrosulfite