Description
Potassium disulphite is an analytical-grade inorganic salt with a minimum purity of 96 % (p.a.). Identified by CAS number 16731-55-8 and EG number 240-795-3, it has the empirical formula K₂S₂O₅, a molar mass of 222,33 g/mol and a density of 2,34 g/cm³. The product is As a salt for analysis (p.a.), it supports applications such as reductive sample treatment, sulphur chemistry and general inorganic procedures where a defined K₂S₂O₅ grade is specified. The stated molar mass and density aid precise formulation of solutions and stoichiometric calculations. Handle the solid in accordance with laboratory safety practice and consult the safety data sheet for hazard and handling guidance before use.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (iodom.): ≥96 %
- In H2O insoluble matter: ≤0,005 %
- Chloride (Cl): ≤0,005 %
- Phosphate (PO4): ≤0,0002 %
- Thiosulphate: ≤0,05 %
- Arsenic (As): ≤0,0001 %
- Lead (Pb): ≤0,001 %
- Iron (Fe): ≤0,001 %
- Copper (Cu): ≤0,001 %
- Nickel (Ni): ≤0,001 %
- CAS number: 16731-55-8
- Pack sizes: 500 g, 1 kg, 5 kg
- EG nr.: 240-795-3
- Purity: min. 96 %, p.a.
- Empirical formula: K₂S₂O₅
- Molar mass: 222,33 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Danger
Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Potassium disulphite, min. 96 %, p.a., 500 g, plastic
What is this article?
Potassium disulphite, min. 96 %, p.a., 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Inorganic salts, inside Inorganic chemicals, in Lab chemicals.
An inorganic salt is an ionic solid, a chloride, a sulfate, a nitrate, a phosphate. The degree of hydration changes the mass that contains one mole of the ion. Analytical grade limits the foreign ions. A hydrate and the anhydrous salt are not interchangeable by weight.
An inorganic chemical is a salt, an acid or base in solid form, a metal, an oxide, or an element. The waters of hydration are part of the formula: a hydrate and an anhydrous salt are different masses for the same ion. Trace metals matter when the salt will be used in analysis. Nanomaterials add particle size to the specification. Look the substance up on PubChem. Hazard classes are on ECHA, under the CLP Regulation and REACH. Transport of the dangerous ones is explained by the UNECE.
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Shelves beside this one are Metals, elements & oxides and Nanomaterials & quantum dots.
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