Sodium tetrathionate dihydrate

SIGALD/72030 - purum p.a., ≥98.0% (T)

CAS Number: 13721-29-4
Empirical Formula (Hill Notation): Na₂O₆S₄ · 2H₂O
Molecular Weight: 306.27
MDL Number: MFCD00150868
Linear Formula: NaO₃SS₂SO₃Na · 2H₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-72030-100G	100 g	$874.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

anion traces	thiosulfate (S₂O₃^2-): ≤500 mg/kg
assay	≥98.0% (T)
cation traces	Ca: ≤500 mg/kg
	Cd: ≤50 mg/kg
	Co: ≤50 mg/kg
	Cu: ≤50 mg/kg
	Fe: ≤50 mg/kg
	K: ≤100 mg/kg
	Ni: ≤50 mg/kg
	Pb: ≤50 mg/kg
	Zn: ≤50 mg/kg
density	2.1 g/mL at 25 °C (lit.)
form	powder or crystals
grade	purum p.a.
impurities	10.5-20.0% water (Karl Fischer)
InChI	1S/2Na.H2O6S4.2H2O/c;;1-9(2,3)7-8-10(4,5)6;;/h;;(H,1,2,3)(H,4,5,6);21H2/q2+1;;;/p-2
InChI key	HAEPBEMBOAIUPN-UHFFFAOYSA-L
pH	4-6 (25 °C, 30.6 g/L)
Quality Level	200
SMILES string	O.O.[Na+].[Na+].[O-]S(=O)(=O)SSS([O-])(=O)=O
solubility	H₂O: 50 mg/mL, slightly turbid, colorless
storage temp.	2-8°C

Application:	Sodium tetrathionate dihydrate may be used to compose the 0.2M Tris buffer in a study.
General description:	Sodium tetrathionate dihydrate is the dihydrate of sodium tetrathionate. It has been synthesized from sodium thiosulfate by iodine oxidation. Its crystals exhibit monoclinic crystal system and space group C₂³-C2.
Other Notes:	Thiosulfating agent; it reacts with thiols, e.g. cysteine to S-sulfo-thiols, used in the quantitative determination of total cysteine/cystine in proteins; Reversible inactivation of enzymes

Symbol	GHS07
Signal word	Warning
Hazard statements	H315 - H319 - H335
Precautionary statements	P302 + P352 - P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	≥98.0% (T)
Density	2.1 g/mL at 25 °C (lit.)
Storage Temp.	2-8°C
UNSPSC	12352300

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