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Ammonium sulfate, molecular biology grade

- Synonyms: Sulfuric acid diammonium saltr- (NH4)2SO4r- M = 132,14 g/molr- CAS [7783-20-2]r- EINECS-No.: 231-984-1r- Solub. in water: (20 ºC): 754 g/lr- Melting point: 280 ºC (decomposes)r- LD 50 (oral, rat): 4250 mg/kgr- GHS-signal word: Warningr- GHS-H sentences: H315 - H319 - H335r- GHS-P sentences: P261 - P280 - P305+P351+P338 - P321 - P405 - P501ar- Tariff number: 3102 21 00 00r- Applications: analytical chemistry, manufacture of alums.rrSPECIFICATIONSrassay (acidimetric): min. 99,5 %ridentity (IR-spectrum): passes testrinsoluble in water: max. 0,005 %rpH (5 %, H2O): 5,0 - 6,0rchlorides (Cl): max. 5 ppmrnitrates (NO3): max 0,001 % rphosphates (as PO4): max. 5 ppmrarsenic (As): max. 1 ppmrcadmium (Cd): max. 1 ppmrcalcium (Ca): max. 0,001 %rcopper (Cu): max. 1 ppmriron (Fe): max. 2 ppmrlead (Pb): max. 1 ppmrzinc (Zn): max. 1 ppmrabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 260 nm: max. 0,010 AUrabsorbance of an aqueous solution 0,1 M in a 1 cm cell at 280 nm: max. 0,010 AUrresidue on ignition: max. 0,01 %rDNases, RNases, Proteases : non detectedr