Factory Supply Sodium Hydrosulphite Used in Making Paper /Textile/ Leather

• CAS No.: 7775-14-6/7631-94-9
• Formula: Na2s2o4
• EINECS: 231-890-0
• Certification: ISO, SGS, BV Certificate
• Environmental Protection: Yes
• Color: White
• Model NO.: 85% 88% 905
• Kind: Bleacher
• Appearance: Powder
• Application: Textile Printing Auxiliary, Dying Auxiliary
• Product Name: Sodium Hyposulfite
• Other Name 1: Sodium Hydrosulphite
• Other Name 2: Sodium Dithionite
• Formula Weight: 174.11
• Grade: Industrial Grade and Food Grade
• Usage: Textile or Leather
• Un No.: 1384
• Dangerous Class: 4.2
• Form: Free-Flowing White Crystalline Powder
• Odor: Odorless or with a Slight Odor of Sulfur Dioxide
• Na2s2o4: 90% Min
• Iron (Fe): 20ppm Max
• Zinc (Zn): 1ppm Max
• Other Heavy Metal( as Pb): 1ppm Max
• Water Insolubles: 0.05% Max
• Transport Package: 50kg Iron Drum
• Specification: 85% 88% 90%
• Trademark: Kelai
• Origin: China
• HS Code: 283110
• Production Capacity: 30000 Tons/Year

Product Description

1. Product details

Sodium Hydrosulfite

Other name: Sodium Hydrosulphite, Sodium Dithionite,SHS

Chemical Formula:Na2S2O4

CAS No.:7775-14-6

EINECS: 231-890-0

UN No.:1384 

Dangerous Class:4.2         

HS Code:28311000

Appearance: Free-flowing white crystalline powder

Odor: Odorless or with a slight odor of sulfur dioxide


2.Simple introduction
The powder is a white sand crystal or light yellow powder. The infusible powder is insoluble in ethanol, soluble in sodium hydroxide solution, reacts violently with water and burns.
The aqueous solution of the insurance powder is unstable in nature and has a strong reducing property, belonging to a strong reducing agent. It is easily exposed to oxygen in the air and oxidizes. At the same time, it easily absorbs moisture and degenerates, and it can seize oxygen in the air and give off a pungent sour taste.


3.Specifications

Index	Technical Grade			Food Additive
Na2S2O4	≥ 90%	≥ 88%	≥ 85%	≥ 88%
Iron (Fe)	≤20ppm	≤ 20ppm	≤ 20ppm	≤ 20ppm
Zinc (Zn)	≤ 1ppm	≤ 1ppm	≤ 1ppm	≤ 1ppm
solution appearance	clear	clear	clear	clear
EDTA	/	/	/	qualified
Arsenic(As)	/	/	/	≤ 1ppm
Other heavy metal( As Pb)	≤ 1ppm	≤ 1ppm	≤ 1ppm	≤ 1ppm
Formate (As HCHO)	/	/	/	≤ 0.05%
water insolubles	≤ 0.05%	≤ 0.05%	≤ 0.05%	/
Cadmium (Cd)	/	/	/	≤ 2ppm
Plumbum (Pb)	/	/	/	≤ 5ppm

4.Applications

a.Widely used in printing and dyeing industry,such as cotton fabrics dyeing auxiliary, silk fabric bleaching.

 b.Used as bleaching agent in paper industry.

 c.Used as bleaching agent,antiseptic agent and antioxidant agent in food industry.

 d.Used as bleaching agent for soap,oil esters,pulp in light industry.

 e.Used for producing rongalite,sodium thiosulfate,thiourea,sulfur,benzoic acid,six  O(medical),synthetic  dyes,also used copperplate printing,analytical reagent in the chemical industry,etc.

 f.Used as reducing agent in printing and dyeing industry.




5.Package & Loading

(1) Packing: 50kg net / Drum.

(2) Loading quantity :21MT/20'container.