Description
Sodium dihydrogen phosphate monohydrate is a high-purity inorganic salt offered at a minimum assay of 98 % in p.a. and ACS quality. It carries the empirical formula NaH₂PO₄ · H₂O, CAS number 10049-21-5 and a molar mass of 137,99 g/mol, with a density of 2,04 g/cm³. These defined physicochemical data support reproducible preparation of buffer systems, phosphate standards and analytical reagents in routine and research laboratories. The p.a. and ACS grades align with demanding inorganic analysis, quality-control workflows and salts-for-analysis applications where consistent composition matters. Laboratories use this reagent as a phosphate source, buffering component and general analytical salt when preparing calibration media or adjusting ionic strength. Clear identity data, including EG number 231-449-2, facilitate documentation and method transfer. The plastic packaging suits everyday laboratory handling and inventory management for inorganic salts intended for analysis.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (acidim.): 98,0-102,0 %
- pH value (5 % in water): 4,1-4,5
- In H2O insoluble matter: ≤0,01 %
- Chloride (Cl): ≤0,0005 %
- Sulphate (SO4): ≤0,003 %
- Calcium (Ca): ≤0,005 %
- Iron (Fe): ≤0,001 %
- Potassium (K): ≤0,01 %
- Heavy metals: ≤0,001 %
- CAS number: 10049-21-5
- Pack sizes: 500 g, 1 kg, 2.5 kg, 25 kg
- EG nr.: 231-449-2
- Empirical formula: NaH₂PO₄ · H₂O
- Molar mass: 137,99 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Sodium dihydrogen phosphate monohydrate, min. 98 %, p.a., ACS, 500 g, plastic
What is this article?
Sodium dihydrogen phosphate monohydrate, min. 98 %, p.a., ACS, 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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