Sodium metabisulfite

SIGALD/31448 - puriss. p.a., ACS reagent, reag. Ph. Eur., dry, 98-100.5%

Synonym: Sodium disulfite; Sodium pyrosulfite

CAS Number: 7681-57-4
Empirical Formula (Hill Notation): Na₂O₅S₂
Molecular Weight: 190.11
EC Number: 231-673-0
MDL Number: MFCD00167602
Linear Formula: Na₂S₂O₅
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-31448-500G	500 g	$82.50 1/EA	Add To Favorites
45-31448-1KG	1 kg	$126.00 1/EA	Add To Favorites
45-31448-2.5KG	2.5 kg	$278.00 1/EA	Add To Favorites
45-31448-6X2.5KG	2.5 kg	$973.00 6/EA	Add To Favorites

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This image depicts SKU: 31448-500G

Properties
Descriptions
Safety Info.
Basic Data

agency	reag. Ph. Eur.
anion traces	chloride (Cl^-): ≤50 mg/kg
assay	98-100.5%
cation traces	As: ≤0.5 mg/kg
	Ca: ≤50 mg/kg
	Cd: ≤50 mg/kg
	Co: ≤50 mg/kg
	Cu: ≤5 mg/kg
	Fe: ≤5 mg/kg
	K: ≤100 mg/kg
	Ni: ≤50 mg/kg
	Pb: ≤5 mg/kg
	Zn: ≤10 mg/kg
form	powder
grade	ACS reagent
	puriss. p.a.
impurities	≤0.01% thiosulfate (S₂O₃)
InChI	1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI key	HRZFUMHJMZEROT-UHFFFAOYSA-L
mp	>300 °C (lit.)
pH	3.5-5.0 (20 °C, 5%)
quality	dry
Quality Level	200
SMILES string	[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O

Application:	Sodium metabisulfite may be used as an initiator during the cross-linking polymerization of polybutadiene in the cores of the vesicle membranes. It may be added as an antioxidant during the preparation of stock solutions of 6-hydroxydopamine in various studies.
General description:	Sodium metabisulfite (MBS, Sodium disulfite) is an inorganic salt. It is the sodium salt of disulphurous (pyrosulfurous) acid. It is widely used in textile dyeing, photography and paper industry. It is also commonly added to various food products and wines as a preservative.
Packaging:	1, 2.5, 6×2.5 kg in poly bottle
Packaging:	50 kg in poly drum
Packaging:	500 g in poly bottle

Symbol	GHS05,GHS07
Signal word	Danger
Hazard statements	H302 - H318
Precautionary statements	P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501
Hazard Codes	Xn
Risk Statements	22-31-41-52
Safety Statements	26-39-46
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable
Supplemental Hazard Statements	EUH031

Purity	98-100.5%
mp	>300 °C (lit.)
UNSPSC	12352300

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