Description
di-Potassium hydrogen phosphate is a high-purity inorganic salt offered at minimum 99 % in p.a. quality, with empirical formula K₂HPO₄ · 3 H₂O, CAS number 16788-57-1 and molar mass 228,23 g/mol. This trihydrate form is widely used to prepare buffer systems, nutrient media and analytical reagents where reliable phosphate content and low impurity levels are essential. Laboratories employ it for pH adjustment, ion chromatography standards and the formulation of physiological or culture buffers. The p.a. specification and defined EG number 231-834-5 facilitate documentation in regulated and research environments. The kilogram pack size balances convenience for frequent users with manageable storage. Integrate into standard inorganic salt protocols and handle with usual laboratory precautions for hygroscopic phosphate salts.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (K2HPO4 3 H2O): ≥99 %
- pH value (5 % in H2O): 9,1-9,3
- In H2O insoluble matter: ≤0,005 %
- Chloride (Cl): ≤0,001 %
- Sulphate (SO4): ≤0,005 %
- Total nitrogen (as N): ≤0,001 %
- Heavy metals (as Pb): ≤0,001 %
- Arsenic (As): ≤0,00005 %
- Lead (Pb): ≤0,0005 %
- Calcium (Ca): ≤0,005 %
- CAS number: 16788-57-1
- Pack sizes: 1 kg, 250 g, 2.5 kg
- EG nr.: 231-834-5
- Purity: min. 99 %, p.a.
- Empirical formula: K₂HPO₄ · 3 H₂O
- Molar mass: 228,23 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about di-Potassium hydrogen phosphate, min. 99 %, p.a., 250 g, plastic
What is this article?
di-Potassium hydrogen phosphate, min. 99 %, p.a., 250 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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