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Merck
CN

13479

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
NACRES:
NA.21
PubChem Substance ID:
329750194
UNSPSC Code:
12352302
EC Number:
231-867-5
MDL number:
MFCD00149186
Assay:
99.0-100.5% (USP, dry basis), 99.0-101.0% (EP)
Form:
crystalline

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InChI key

PODWXQQNRWNDGD-UHFFFAOYSA-L

InChI

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

SMILES string

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

agency

suitable for EPA 1621, suitable for ISO 25101

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

Quality Level

200

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Related Categories

Storage Class

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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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)
Nuclear magnetic resonance in sodium thiosulfate pentahydrate.
Murty CRK and El Saffar ZM.
Acta Crystallographica, 15(6), 536-538 (1962)
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
Melani Sooriyaarachchi et al.
Metallomics : integrated biometal science, 5(3), 197-207 (2013-02-28)
Cis-Platin (CP) is a remarkably effective Pt-based anticancer drug, but it also exhibits severe toxic side-effects, including nephrotoxicity and ototoxicity. Previous studies conducted with mammalian model organisms have clearly demonstrated that the intravenous administration of N-acetyl-L-cysteine (NAC) or sodium thiosulfate
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