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13479

Sigma-Aldrich

Sodium thiosulfate pentahydrate

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

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Linear Formula:
Na2S2O3 · 5H2O
CAS Number:
Molecular Weight:
248.18
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

puriss.

Quality Level

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

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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Sodium thiosulfate pentahydrate puriss., meets analytical specification of Ph. Eur., BP, USP

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13479

Sodium thiosulfate pentahydrate

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Sodium tetraborate decahydrate

Essential Grade
Sodium sulfate puriss., meets analytical specification of Ph. Eur., BP, USP, anhydrous, 99.0-100.5% (calc. to the dried substance)

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Sodium sulfate

-
Sodium bicarbonate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E500, 99.0-100.5%, powder

Sigma-Aldrich

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Sodium bicarbonate

Essential Grade
assay

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

assay

99.0-103.0%

assay

99.0-100.5% (calc. to the dried substance)

assay

99.0-100.5%

form

crystalline

form

crystalline

form

crystalline

form

powder

impurities

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

impurities

carbonate and Bicarbonate, complies, organic volatile impurities, complies, residual solvents, complies, ≤0.001% ammonium (NH4), ≤0.002% heavy metals (as Pb)

impurities

acidity or alkalinity, complies, residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤0.04% free alkali (as NaOH), ≤0.05% free acid (as H2SO4)

impurities

ammonia (NH3), in accordance, organic volatile impurities, complies, residual solvents, complies, water-insoluble matter, complies, ≤0.002% ammonium (NH4), complies

pH

6.0-8.4 (20 °C, 10%)

pH

9.0-9.6 (20 °C, 5%)

pH

5.2-8 (20 °C, 50 g/L)

pH

≤8.6 (20 °C, 5%)

anion traces

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

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤200 mg/kg

anion traces

carbonate (CO32-): in accordance, chloride (Cl-): ≤100 mg/kg, sulfate (SO42-): ≤100 mg/kg

Storage Class Code

11;13 - Combustible Solids;Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Sodium thiosulfate pentahydrate: a redetermination by neutron diffraction.
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Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, 34(6), 1975-1977 (1978)
Nuclear magnetic resonance in sodium thiosulfate pentahydrate.
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Acta Crystallographica, 15(6), 536-538 (1962)
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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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