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72030

Sigma-Aldrich

Sodium tetrathionate dihydrate

purum p.a., ≥98.0% (T)

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About This Item

Linear Formula:
NaO3SS2SO3Na · 2H2O
CAS Number:
Molecular Weight:
306.27
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.21

grade

purum p.a.

Quality Level

assay

≥98.0% (T)

form

powder or crystals

impurities

10.5-20.0% water (Karl Fischer)

pH

4-6 (25 °C, 30.6 g/L)

solubility

H2O: 50 mg/mL, slightly turbid, colorless

density

2.1 g/mL at 25 °C (lit.)

anion traces

thiosulfate (S2O32-): ≤500 mg/kg

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

storage temp.

2-8°C

SMILES string

O.O.[Na+].[Na+].[O-]S(=O)(=O)SSS([O-])(=O)=O

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);2*1H2/q2*+1;;;/p-2

InChI key

HAEPBEMBOAIUPN-UHFFFAOYSA-L

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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.

Application

Sodium tetrathionate dihydrate may be used to compose the 0.2M Tris buffer in a study.

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

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The interaction of oxidized glutathione, cystamine monosulfoxide, and tetrathionate with the-SH groups of rabbit muscle D-glyceraldehyde 3-phosphate dehydrogenase.
A PIHL et al.
The Journal of biological chemistry, 237, 1356-1362 (1962-04-01)
[5] Determination of cystine and cysteine as S-sulfocysteine.
T Y Liu et al.
Methods in enzymology, 25, 55-60 (1972-01-01)
The mechanism of inactivation of glyceraldehyde 3-phosphate dehydrogenase by tetrathionate, o-iodosobenzoate, and iodine monochloride.
D J Parker et al.
The Journal of biological chemistry, 244(1), 180-189 (1969-01-10)
The Crystal Structure of Sodium Tetrathionate Dihydrate.
Foss O and Hordvik A.
Acta Chemica Scandinavica, 18(3), 662-662 (1964)
Poul Bennekou et al.
Blood cells, molecules & diseases, 48(2), 102-109 (2011-12-06)
The vanadate-induced increase in passive uptake of calcium and cobalt and their interference were studied in human red cells using (45)Ca and (57)Co as tracers. Vanadate is a potent inhibitor of the Ca-pump in red cells, although in fed cells

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