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Sodium hydrogen carbonate, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Sodium bicarbonate
- NaHCO3
- M = 84,01 g/mol
- CAS [144-55-8]
- EINECS-No.: 205-633-8
- Solub. in water: (20 ºC): 95,5 g/l
- Melting point: 270 ºC (decomposes)
- Vapour pressure: (30 ºC) 8,3 hPa
- LD 50 (oral, rat): 4220 mg/kg
- Tariff number: 2836 30 00 00
- Applications: analytical chemistry, laboratory reagent, to make sodium salts, for laboratory glassware cleaning, source of CO2 , in fire extinguishers, in food industry (E-500).

SPECIFICATIONS
assay (acidimetric, on dried sample): 99,0 - 100,5 %
Identification sodium: passes test
Identification bicarbonates: passes test
appearance of solution: clear and colourless
insoluble matter: passes test
pH (5 %, H2O): max. 8,6
normal carbonate: passes test
chlorides (Cl): max. 150 ppm
sulfates (SO4): max. 150 ppm
limit of sulfur compounds: max. 150 ppm
ammonium (NH4): max. 20 ppm
aluminium (Al): max. 2 ppm
arsenic (As): max. 2 ppm
calcium (Ca): max. 100 ppm:
copper (Cu): max. 1 ppm
iron (Fe): max. 20 ppm
magnesium (Mg): max. 0,004 %

loss on drying (silica gel): max. 0,25 %