Description
Sodium thiosulphate pentahydrate is a crystalline laboratory chemical with a minimum purity of 98,5 %, It is registered under CAS number 10102-17-7 and EG number 231-867-5, with empirical formula Na₂S₂O₃ · 5 H₂O and a molar mass of 248,18 g/mol. Density is 1,73 g/cm³, providing useful data for solution preparation and material handling. This crystalline grade from manufacturer Carl ROTH is appropriate for general chemical and analytical laboratory use where sodium thiosulphate pentahydrate is required as a reducing or titrimetric reagent component. The kilogram pack supports higher-throughput or shared laboratory stock while remaining straightforward to store and dispense. Clear identity parameters—CAS, EG number, formula and molar mass—facilitate documentation, weighing calculations and preparation of working solutions. Laboratories can employ the material across routine inorganic and analytical workflows that depend on consistent crystalline sodium thiosulphate pentahydrate of defined minimum assay.
This article is part of Volumetric standard solutions (titration), in Analytical standards & reference materials.
Key features
- Appearance: white crystals
- Assay: ≥98,5 %
- CAS number: 10102-17-7
- Pack sizes: 1 kg, 10 kg, 5 kg
- EG nr.: 231-867-5
- Purity: min. 98,5 %, cryst.
- Empirical formula: Na₂S₂O₃ · 5 H₂O
- Molar mass: 248,18 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Sodium thiosulphate pentahydrate, min. 98.5 %, cryst., 1 kg, plastic
What is this article?
Sodium thiosulphate pentahydrate, min. 98.5 %, cryst., 1 kg, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Volumetric standard solutions (titration), inside Analytical standards & reference materials, in Lab chemicals.
A volumetric standard solution is a reagent of stated concentration for titration, such as a stated molarity of acid, base or silver nitrate. The factor or the exact titre is on the certificate. Using the nominal molarity when a factor is printed is a systematic error.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
Which category should I open next?
The category is Analytical standards & reference materials. The sub-category is Volumetric standard solutions (titration). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Reagents for analysis (Ph. Eur., ASTM, DIN), Spectroscopy & physical property standards and Indicators & indicator solutions.
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When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
