Description
di-Sodium hydrogen phosphate heptahydrate is an analytical-grade inorganic salt supplied at min. 98 %, p.a., ACS quality for laboratory use. The empirical formula is Na₂HPO₄ · 7 H₂O, with a molar mass of 268,03 g/mol, a density of 1,68 g/cm³, CAS number 7782-85-6, and EG nr. 231-448-7. This heptahydrate form of disodium hydrogen phosphate is employed in buffer preparation, pH adjustment, and general inorganic analysis where p.a. and ACS specifications are required. provides a practical quantity for routine weighing and solution make-up in analytical and research laboratories. As a phosphate salt for analysis, it supports reproducible buffer systems and standard laboratory procedures that depend on defined purity and hydration state. Material from manufacturer Carl ROTH is positioned among salts for analysis (p.a.) and suits method documentation that references ACS-aligned reagents. Transparent physical and identity data—including molar mass and density—aid accurate preparation, inventory control, and transfer of buffer recipes between laboratories.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (acidim.): 98,0-102,0 %
- In H2O insoluble matter: ≤0,005 %
- pH value (5 % in H2O): 8,7-9,3
- Chloride (Cl): ≤0,001 %
- Sulphate (SO4): ≤0,005 %
- Heavy metals (as Pb): ≤0,001 %
- Iron (Fe): ≤0,001 %
- CAS number: 7782-85-6
- Pack sizes: 500 g, 1 kg, 2.5 kg
- EG nr.: 231-448-7
- Purity: min. 98 %, p.a., ACS
- Empirical formula: Na₂HPO₄ · 7 H₂O
- Molar mass: 268,03 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about di-Sodium hydrogen phosphate heptahydr., min. 98 %, p.a., ACS, 500 g, plastic
What is this article?
di-Sodium hydrogen phosphate heptahydr., 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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The category is Inorganic chemicals. The sub-category is Inorganic salts. The catalogue is Lab chemicals.
Shelves beside this one are Metals, elements & oxides and Nanomaterials & quantum dots.
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