Sodium Hydrosulphite 85% 88% 90% Sodium Dithionite

• CAS No.: 7775-14-6
• Formula: Na2o4s2
• EINECS: 231-890-0
• Purity: 80%~90%
• Type: Sodium Hydrosulphite
• Appearance: Powder
• Model NO.: Sodium hydrosulfite
• Grade Standard: Industrial Grade
• Transport Package: 50kg Drum
• Specification: 85%, 88%, 90%
• Trademark: SCR
• Origin: China
• HS Code: 28311010
• Production Capacity: 120000mt/Year

Product Description

Product Description 
Synonyms: Sodium hydrosulphite, sodium dithionite
Molecular formula: Na2s2o4
Molecular weight: 174.10
CAS: 7775-14-6
Hs: 2831.1010,

Hazard calss: Class 4.2, 4.3 spontaneously combustible substance

Property: Sodium hydrosulfite is a white crystalline powder with weak sulfurous odor. It is readily soluble in water, insoluble in alcohol.

Application: Widely used in printing and dyeing industry, can be used as a reducing agent for vat dyes, disperse dyes can be used to restore the clean, reactive dyes can be used for stripping color, silk, hair bleach, food bleaching agent, the depositary agent, antioxidant agents, preservation agents, bleaching of paper, industrial bleaching agent, processing, reducing agent, sulfonating agent.

Item	90%	85%
Na2S2 O4	≥ 90%	≥ 85%
(Fe)	≤ 20ppm	≤ 20ppm
(Zn)	≤ 1ppm	≤ 1ppm
Clarity	Clarify	Clarify
EDTA	--	-
(As)	--	-
Other heavy metals(pb)	-	-
HCHO	-	-
water insoluble matter	≤ 0.05%	≤ 0.05%