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Ammonium sulfate, molecular biology grade

- Synonyms: Sulfuric acid diammonium salt
- (NH4)2SO4
- M = 132,14 g/mol
- CAS [7783-20-2]
- EINECS-No.: 231-984-1
- Solub. in water: (20 ºC): 754 g/l
- Melting point: 280 ºC (decomposes)
- LD 50 (oral, rat): 4250 mg/kg
- GHS-signal word: Warning
- GHS-H sentences: H315 - H319 - H335
- GHS-P sentences: P261 - P280 - P305+P351+P338 - P321 - P405 - P501a
- Tariff number: 3102 21 00 00
- Applications: analytical chemistry, manufacture of alums.

SPECIFICATIONS
assay (acidimetric): min. 99,5 %
identity (IR-spectrum): passes test
insoluble in water: max. 0,005 %
pH (5 %, H2O): 5,0 - 6,0
chlorides (Cl): max. 5 ppm
nitrates (NO3): max 0,001 %
phosphates (as PO4): max. 5 ppm
arsenic (As): max. 1 ppm
cadmium (Cd): max. 1 ppm
calcium (Ca): max. 0,001 %
copper (Cu): max. 1 ppm
iron (Fe): max. 2 ppm
lead (Pb): max. 1 ppm
zinc (Zn): max. 1 ppm
absorbance of an aqueous solution 0,1 M in a 1 cm cell at 260 nm: max. 0,010 AU
absorbance of an aqueous solution 0,1 M in a 1 cm cell at 280 nm: max. 0,010 AU
residue on ignition: max. 0,01 %
DNases, RNases, Proteases : non detected