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Sodium dithionite

Description References
Sodium dithionite
Sodium dithionite
CAS No.
7775-14-6
Chemical Name:
Sodium dithionite
Synonyms
hydros;burmol;blankit;LYKOPON;v-briteb;vatrolite;SODIUM HYDR;HYDROSULFITE;Natriumdithionit;SODIUM DITHIONITE
CBNumber:
CB1155576
Molecular Formula:
Na2O4S2
Formula Weight:
174.11
MOL File:
7775-14-6.mol

Sodium dithionite 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
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H251 Self-heating; may catch fire Self-heating substances and mixtures Category 1 Danger
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
Precautionary statements:
P235+P410 Keep cool. Protect from sunlight.
P407 Maintain air gap between stacks/pallets.
P413 Store bulk masses greater than … kg/…lbs at temperatures not exceeding … oC/…oF.
P420 Store away from other materials.

Sodium dithionite price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.06505 Sodium dithionite technical grade 7775-14-6 1EA $115 2017-11-08 Buy
Sigma-Aldrich 1.06505 Sodium dithionite technical grade 7775-14-6 2EA $3743 2017-11-08 Buy
Alfa Aesar 33381 Sodium hydrosulfite, tech., 85+% 7775-14-6 1kg $64.8 2017-11-08 Buy
Alfa Aesar 33381 Sodium hydrosulfite, tech., 85+% 7775-14-6 25g $21.3 2017-11-08 Buy
Sigma-Aldrich 71699 Sodium hydrosulfite ≥82% (RT) 7775-14-6 50g $28.5 2017-11-08 Buy

Sodium dithionite Chemical Properties,Uses,Production

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.

References

[1] http://chemicalsolutions.net/sodium-hydrosulfite.html
[2] http://www.inchem.org/documents/sids/sids/7775146.pdf
[3] Lyndsie Selwyn, Season Tse (2008) The chemistry of sodium dithionite and its use in conservation, 53, 61-73

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 acid.

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 gases. 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.

Sodium dithionite Preparation Products And Raw materials

Raw materials

Preparation Products


Sodium dithionite Suppliers

Global( 223)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Sino Chem Mongolia Alliance Ltd. +86-131-10056998
+86-022-23686656 sinongolia-chem@163.com China 10 60
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 sale@aladdin-e.com China 25121 65
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96820 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40398 62
3B Pharmachem (Wuhan) International Co.,Ltd. 86-21-50328103 * 801、802、803、804 Mobile:18930552037
86-21-50328109 3bsc@sina.com China 15940 69
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30309 84
TCI (Shanghai) Development Co., Ltd. 800-988-0390
021-67121385 sales@tcishanghai.com.cn China 22830 81
Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 dtftchem@sina.com China 3434 62
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
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Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 info@energy-chemical.com China 44192 61

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