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Merck
CN

13479

Sigma-Aldrich

Sodium thiosulfate pentahydrate

puriss., meets analytical specification of Ph. Eur., BP, USP

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About This Item

Linear Formula:
Na2S2O3 · 5H2O
CAS Number:
10102-17-7
Molecular Weight:
248.18
EC Number:
231-867-5
MDL number:
MFCD00149186
UNSPSC Code:
12352302
PubChem Substance ID:
329750194
NACRES:
NA.21
Assay:
99.0-100.5% (USP, dry basis)
99.0-101.0% (EP)
Form:
crystalline

Key Documents

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Agency

suitable for EPA 1621
suitable for ISO 25101

Quality Level

200

grade

puriss.

Assay

99.0-100.5% (USP, dry basis)
99.0-101.0% (EP)

form

crystalline

quality

meets analytical specification of Ph. Eur., BP, USP

impurities

residual solvents, complies
≤0.0005% heavy metals (as Pb)

loss

32-37% loss on drying, 16 h (vacuum)

pH

6.0-8.4 (20 °C, 10%)

anion traces

sulfate, sulfite (as SO42-): ≤2000 mg/kg
sulfide (S2-): in accordance

cation traces

As: ≤3 mg/kg
Ca: ≤50 mg/kg
Fe: ≤10 mg/kg

suitability

complies for appearance of solution

application(s)

PFAS testing

SMILES string

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

InChI

1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2

InChI key

PODWXQQNRWNDGD-UHFFFAOYSA-L

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Related Categories

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX8963
MKCT0761
MKCS7412
MKCS0294
MKCS6994

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Nuclear magnetic resonance in sodium thiosulfate pentahydrate.
Murty CRK and El Saffar ZM.
Acta Crystallographica, 15(6), 536-538 (1962)
Sodium thiosulfate pentahydrate: a redetermination by neutron diffraction.
Lisensky GC and Levy HA.
Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, 34(6), 1975-1977 (1978)
Fingerprint imaging by scanning electrochemical microscopy.
Zhang M and Girault HH.
Electrochemical Communications, 9(7), 1778-1782 (2007)
I A Checheriţă et al.
Chirurgia (Bucharest, Romania : 1990), 108(5), 736-740 (2013-10-26)
In the present article, we discuss the case of 67-year-old female patient diagnosed with inferior limbs calciphylaxis and hemodialyzed since 2006. The clinical manifestations and pathological lab findings are typical for this rare and extremely severe complication in chronic hemodialyzed
Brooke Bair et al.
Journal of drugs in dermatology : JDD, 10(9), 1042-1044 (2011-11-05)
Calcinosis cutis is a term used to describe a group of disorders which result in calcium deposits in the skin. These disorders can be separated based on etiology. Sodium thiosulfate has been used to systemically treat calciphylaxis with little to
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