Ammonio fosfato bibasico, per analisi, ExpertQ®, ACS

- Synonyms: Ammonium biphosphate, Ammonium phosphate dibasic, Fyrex
- (NH4)2HPO4
- M = 132,06 g/mol
- CAS [7783-28-0]
- EINECS-No.: 231-987-8
- Solub. in water: (20 ºC): 690 g/l
- Melting point: 155 ºC (decomposes)
- GHS-signal word: Warning
- GHS-H sentences: H312 - H332
- GHS-P sentences: P261 - P280 - P321 - P304+P340 - P312 - P501a
- Tariff number: 3105 30 00 00
- Applications: Fire-resistant protective clothing, dentifrices, corrosion inhibitor, analytical chemistry.

SPECIFICATIONS
assay (acidimetric): min. 98,0 %
identity (IR-spectrum): passes test
insoluble in water: max. 0,005 %
pH (5 %, H2O, 25 °C): 7,7 - 8,1
pH (20 %, H2O): about 8
chlorides (Cl): max. 5 ppm
nitrates (NO3): max. 0,001 %
sulfates (SO4): max. 0,004 %
calcium (Ca): max. 0,001 %
heavy metals (as Pb): max. 5 ppm
iron (Fe): max. 0,001 %
magnesium (Mg): max. 5 ppm
potassium (K): max. 0,001 %
sodium (Na): max. 0,001 %