Sodium dihydrogen phosphate, min. 98 %, extra pure, anhydrous, 100 g, plastic

Sodium dihydrogen phosphate is an anhydrous inorganic salt of min. 98 % extra pure grade, offered here Identified by CAS number 7558-80-7 and EG number 231-449-2, it has the empirical formula NaH₂PO₄, a molar mass of 119,98 g/mol, and a density of 2,357 g/cm³. The material is widely applied in buffer preparation, pH adjustment, and phosphate-based aqueous systems across analytical chemistry, biochemistry, and general wet-lab work. Extra pure anhydrous quality supports reproducible solution making where controlled composition matters. This grade is available from manufacturer Carl ROTH as a compact plastic unit suited to bench-scale weighing and stock solutions. Laboratories can integrate the salt into media formulation, calibration buffers, and process chemistry workflows that specify sodium dihydrogen phosphate. Clear specification of purity, anhydrous form, and molecular data helps method documentation and inventory control without relying on broader performance claims beyond the stated chemical identity and physical constants.

This article belongs on Inorganic salts, in Inorganic chemicals.

Key features

• Assay: ≥98.0 %
• Fluoride (F): ≤0.001 %
• As (Arsenic): ≤0.0001 %
• Cd (Cadmium): ≤0.0001 %
• Hg (Mercury): ≤0.0001 %
• Pb (Lead): ≤0.0001 %
• Heavy metals (as Pb): ≤0.001 %
• pH (1 % solution): 4.0-5.0
• Loss on drying (105 °C): ≤1.0 %
• In water insoluble matter: ≤0.2 %
• CAS number: 7558-80-7
• Pack sizes: 100 g, 500 g, 1 kg, 2.5 kg
• EG nr.: 231-449-2
• Purity: min. 98 %, extra pure, anhydrous
• Empirical formula: NaH₂PO₄
• Molar mass: 119,98 g/mol
• Technical Information Sheet:
• Safety Data Sheet: