Description
di-Sodium hydrogen phosphate dihydrate is a high-purity inorganic salt with the empirical formula Na₂HPO₄ · 2 H₂O and CAS number 10028-24-7, specified at a minimum of 99,5 % for HPLC use. It has a molar mass of 177,99 g/mol and a density of 2,1 g/cm³, supporting well-defined buffer preparation and chromatographic work. This reagent from manufacturer Carl ROTH fits method development and routine HPLC workflows in which phosphate buffer systems are required. Its stated composition and HPLC-oriented grade help laboratories pursue reproducible retention behaviour and stable baselines. Typical applications include mobile-phase and buffer preparation within liquid chromatography (LC, HPLC, LC-MS) environments. The product is intended for professional laboratory use in chromatography and related analytical procedures where controlled phosphate salts are essential.
This article is part of HPLC accessories, in HPLC columns & accessories.
Key features
- Assay (titr.): ≥99.5 %
- Solubility (10 % in H2O): complies
- In H2O insoluble matter: ≤0.005 %
- pH (5 % in H2O): 9.1-9.3
- Chloride (Cl): ≤0.001 %
- Sulphate (SO4): ≤0.005 %
- Cu (Copper): ≤0.0005 %
- Fe (Iron): ≤0.001 %
- K (Potassium): ≤0.005 %
- Heavy metals (as Pb): ≤0.001 %
- CAS number: 10028-24-7
- Pack sizes: 50 g, 250 g
- EG nr.: 231-448-7
- Purity: min. 99,5 %, HPLC
- Molar mass: 177,99 g/mol
- Density: 2,1 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about di-Sodium hydrogen phosphate dihydrate, min. 99,5 %, HPLC, 50 g, plastic
What is this article?
di-Sodium hydrogen phosphate dihydrate, min. 99,5 %, HPLC, 50 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in HPLC accessories, inside HPLC columns & accessories, in Chromatography equipment.
HPLC accessories are the unions, the ferrules, the lamp and the mixer parts around the pump and the detector. A ferrule that has been swaged on one fitting does not reseal on another. The part has to be the one for that thread and that tubing.
An HPLC column is a tube packed, or coated, with a stationary phase. The sample is carried through it by a liquid, and the compounds leave at different times. The phase, the particle size, the length and the internal diameter decide the separation. A guard column is a short sacrificial piece in front of the analytical column. Fittings and tubing have a bore that either preserves the peak or smears it. Compound names follow IUPAC. Data are on PubChem. Method grades often cite the European Pharmacopoeia or USP.
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Shelves beside this one are HPLC columns, HPLC fittings, tubing & inline filters and HPLC guard columns.
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