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Sodium dihydrogen phosphate monohydrate, molecular biology grade

- Synonyms: Sodium biphosphate, Monosodium orthophosphate, Primary sodium phosphate, Sodium phosphate monobasicr- NaH2PO4·H2Or- M = 137,99 g/molr- CAS [10049-21-5]r- EINECS-No.: 231-449-2r- Solub. in water: (20 ºC): 850 g/lr- Melting point: ~ 100 ºC (decomposes)r- LD 50 (oral, rat): 8290 mg/kg (anhydrous substance)r- Tariff number: 2835 22 00 00r- Applications: analytical chemistry, laboratory reagent, synthesis of organic products, for pharmaceutical use, for softening water, in food industry (E 339).rrSPECIFICATIONSrassay (acidimetric): min. 99,5 %ridentity (IR-spectrum): passes testrabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 260 nm: max. 0,01 AUrabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 280 nm: max. 0,01 AUrchlorides (Cl): max. 0,005 %rheavy metals (as Pb): max. 0,001 %riron (Fe): max. 5 ppmrDNases, RNases, Proteases : non detectedr