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LC5434 di-Sodium hydrogen phosphate dihydrate
buffer substance for chromatography

 

Order number Packaging Quantity Price €
AC32434 Glass bottle 250 g 35.78

 

Product information
Synonyms Sodium monohydrogen phosphate, Sodium phosphate dibasic
Hill Formula HNa2O4P * 2 H2O
Chemical formula Na2HPO4 * 2 H2O
HS Code 2835 22 00
EC number 231-448-7
Molar mass 177.99 g/mol
CAS number 10028-24-7

 

Chemical and physical data
Solubility 93 g/l (20 °C)
Melting point 92.5 °C Elimination of water of crystallisation
Molar mass 177.99 g/mol
Density 2.1 g/cm3 (20 °C)
Bulk density 850 – 1000 kg/m3
pH value 9.0 – 9.4 (50 g/l, H2O, 20 °C)

 

Safety information
Storage class 10 – 13 Other liquids and solids
WGK WGK 1 slightly water endangering
Disposal 14
Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).

 

Toxicological data
LD 50 oral LD50 rat 17000 mg/kg

 

Specifications
Identity passes test
pH-value (5 %; water) 9.0 – 9.2
Assay (acidimetric) ≥ 99.0 %
Self-absorption
– 215 nm; 0.2 mol/l; 1 cm; water
≤ 0.15
– 220 nm; 0.2 mol/l; 1 cm; water ≤ 0.05
– 254 nm; 0.2 mol/l; 1 cm; water ≤ 0.02