Sodium dithionite CAS#7775-14-6

CAS Number: 7775-14-6
Chemical Formula: Na2O4S2
Synonyms:

disodiumdithionite
SODIUM HYDROSULPHITE
dithionous acid disodium salt

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

Contact Now E-Mail Telephone WhatsApp

Product Details

Sodium dithionite CAS#7775-14-6

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.

Sodium dithionite Chemical Properties

Melting point	300 °C
Boiling point	1390°C
bulk density	1250kg/m3
density	2.13
Fp	>100°C
storage temp.	Store at +5°C to +30°C.
solubility	250 g/L (20°C)
form	Powder/Solid
color	White
Odor	None or slight scent of sulfur dioxide
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.
Cosmetics Ingredients Functions	VISCOSITY CONTROLLING REDUCING
InChI	1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
InChIKey	JVBXVOWTABLYPX-UHFFFAOYSA-L
SMILES	[Na+].[Na+].[O-]S(=O)S([O-])=O
LogP	-2.756 (est)
CAS DataBase Reference	7775-14-6(CAS DataBase Reference)
EPA Substance Registry System	Sodium hydrosulfite (7775-14-6)

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
F	1-10
Autoignition Temperature	>200 °C
TSCA	TSCA listed
HazardClass	4.2
PackingGroup	II
HS Code	28311010
Storage Class	4.2 - Pyrophoric and self-heating hazardous materials
Hazard Classifications	Acute Tox. 4 Oral Eye Irrit. 2 Self-heat. 1
Hazardous Substances Data	7775-14-6(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 2500 mg/kg

Product Application of Sodium dithionite CAS#7775-14-6

Sodium hydrosulfite is used as a reducing agent in aqueous solutions, sulfonating agent , chelating agent and decolorizing agent in organic reactions. It finds application in water treatment, gas purification, cleaning, leather, polymers, photography, and many others. It is involved in chemical enhanced oil recovery to stabilize polyacrylamide polymers against radical degradation in the presence of iron. It plays an important role to determine the iron content in soil chemistry.

Factory and Equipment Show

Gardenia Yellow#94238-00-3