MilliporeSigma
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1.06513

SAFC

Sodium thiosulfate pentahydrate

pure

Synonym(s):
Sodium thiosulfate pentahydrate, Antichlor
Empirical Formula (Hill Notation):
Na2O3S2 · 5H2O
CAS Number:
Molecular Weight:
248.18
MDL number:
EC Index Number:
231-867-5

Quality Level

form

solid

pH

6.0-7.5 (20 °C, 100 g/L in H2O)

mp

48 °C

solubility

701 g/L

density

1.74 g/cm3 at 20 °C

application(s)

liquid formulation
pharmaceutical
semi-solid formulation

storage temp.

2-30°C

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

General description

Finding the right excipient that matches your needs as well as regulatory demands can be a complicated challenge in formulation. With our application know-how and regulatory expertise, we support you in every step of development, scale-up, and production. Our SAFC® portfolio of high-quality products for biopharmaceutical and pharmaceutical formulation and production withstands strict quality control procedures and is produced according to applicable cGMP guidelines.

Application

Sodium thiosulfate pentahydrate is typically used as an antioxidant and chelating agent in pharmaceutical formulations and cosmetics.

Legal Information

SAFC is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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