Sodium dithionite 7775-14-6 Sodium dithionite

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Basic Info.
  • product name: Sodium dithionite 
  • cas: 7775-14-6 
  • purity: 99%min 
  • MF: Na2O4S2 
  • payment: TT,LC,BITCOIN,WU,MONEY GRAM 
  • Application: Industry 
  • Packing: 25kg woven packing 
  • Model No.: CB 
  • Place of Origin: Hebei  
  • Min.Order: 10 Gram
  • Means of Transport: Land, Ocean, Air
Supply Capacity
  • Production Capacity: 500ton/month
  • Packing:bag
  • Delivery Date: within 7-10days

product name :Sodium dithionite 
cas No :7775-14-6 
best quality with lowest price
White solid
Na2O4S2

product  name  :Sodium dithionite 

cas  No  :7775-14-6 

best  quality  with  lowest  price

White solid

Na2O4S2

Sodium dithionite Basic information

Description References

 

Product Name:

Sodium dithionite

Synonyms:

dithionous acids  disodium salt;HYDROSULFITE;SODIUM HYPODISULFITE;SODIUM DITHIONITE;SODIUM HYDROSULFITE;SODIUM HYDROSULPHITE;blankit;burmol

CAS:

7775-14-6

MF:

Na2O4S2

MW:

174.11

EINECS:

231-890-0

Product Categories:

INORGANIC & ORGANIC CHEMICALS;Inorganics;inorganic chemical raw material;inorganic salt;sulphite

Mol File:

7775-14-6.mol


 


Sodium dithionite Chemical Properties

 

Melting point 

300 °C

Boiling point 

1390°C

density 

2.13

storage temp. 

Store at RT.

solubility 

250 g/L (20°C)

form 

Powder/Solid

color 

White

PH

5.5-8.5 (50g/l, H2O, 20℃)

Water Solubility 

250 g/L (20 ºC)

Sensitive 

Moisture Sensitive

Merck 

14,8626

Stability:

Stable, but air sensitive. Incompatible with strong acids, strong oxidizing agents, water, moisture.

CAS DataBase Reference

7775-14-6(CAS DataBase Reference)

 


Safety Information

 

Hazard Codes 

Xn

Risk Statements 

7-22-31

Safety Statements 

26-28-43-7/8-43E-28A

RIDADR 

UN 1384 4.2/PG 2

WGK Germany 

1

1-10

TSCA 

Yes

HazardClass 

4.2

PackingGroup 

II

Hazardous Substances Data

7775-14-6(Hazardous Substances Data)

 


 


Sodium dithionite Usage And Synthesis

 

Description

Sodium dithionite is also called sodium hydrosulfite, sodium hydrosulphite, sodium sulfoxylate, and sulfoxylate. Sodium dithionite is not stable under physiological conditions, with the rate of decomposition increasing with increasing acidity. Upon contact with moisture, it is oxidized to hydrogen sulfite (HSO3-), sulfite (SO32-) and hydrogen sulfate (HSO4-). Under strongly acidic conditions it may liberate sulfur dioxide. Under anaerobic conditions (such as in the lower gastrointestinal tract), hydrogen sulfite (HSO3-) and thiosulfate (S2O32-) may be formed. Hydrogen sulfite (HSO3-) can be absorbed after ingestion. It is efficiently metabolized and the major part rapidly is excreted as sulfate into the urine.
Sodium dithionite is widely used in industry owing to its reducing properties and ability to react with oxygen. It is used in textile industry for dyeing, in the pulp and paper industry as a reducing bleach to remove yellow discoloration from cellulose based products, as an oxygen scavenger in boilers, in conservation to remove iron stains on cultural artifacts, and in water treatment for controlling iron flash on white fabrics in bleaching environments.  It is also used in photographic film, clay, wine, leather goods, foods and beverages, polymers, cleaners, gas purification, environmental remediation, metal recovery, and chemical processing.

Chemical Properties

White solid

Uses

Reducing agent for vat dyes,reducing hair bleaching agents,vat dyes printing auxiliaries, silk scouring and bleaching agents, coloring agents and objects stripping vat cleaning agent

Definition

ChEBI: An inorganic sodium salt that is the disodium salt of dithionous acids.

Uses

As reducing agent, particularly in dyeing with indigo and vat dyes; bleaching soaps, straw; removing dyes from dyed fabrics.

General Description

Sodium dithionite is a whitish to light yellow crystalline solid having a sulfur dioxide-like odor. Sodium dithionite spontaneously heats on contact with air and moisture. This heat may be sufficient to ignite surrounding combustible materials. Sodium dithionite is soluble in water. Under prolonged exposure to fire or intense heat containers of Sodium dithionite may violently rupture. Sodium dithionite is used in dyeing and to bleach paper pulp.

Reactivity Profile

Inorganic reducing agents, such as Sodium dithionite, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Their reactions with oxidizing agents may be violent. Sulfites and hydrosulfites (dithionites) can react explosively with strong oxidizing agents (sodium chlorite). Sulfites generate gaseous sulfur dioxide in contact with oxidizing acids and nonoxidizing acids.

Health Hazard

Fire will produce irritating, corrosive and/or toxic gs. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.

Fire Hazard

Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.






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Crovell Biotech (Hebei) Co., Ltd.
No.188 Yuhua road,Qiaoxi District, Shijiazhuang, Hebei, China (Mainland) / 050000
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