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L-Asparagine monohydrate, Pharmpur®, Ph Eur, BP

- Synonyms: Asparaginic acid semiamider- C4H8N2O3·H2Or- M = 150,14 g/molr- CAS [5794-13-8]r- EINECS-No.: 200-735-9r- Solub. in water: (20 ºC): 22 g/lr- Melting point: 215 - 217 ºC (decomposes)r- Tariff number: 2924 19 00 90r- Applications: in biochemistry, for pharmaceutical use, in food industry, synthesis of organic products, in pharma industry.rrSPECIFICATIONSrassay (titration with HClO4, on dried sample) : 99,0 - 101,0 %ridentity (IR-spectrum): passes testrIdentification TLC: passes testrappearance of solution (2 %, H2O): clear and colourlessrspecific rotation (20º/D, c=10, HCl 10%) : + 33,7 º - + 36,0 °rpH (2 %, H2O): 4,0 - 6,0 rchlorides (Cl): max. 200 ppmrsulfates (SO4): max. 200 ppmrammonium (NH4): max. 0,1 %riron (Fe): max. 10 ppmrresidue on ignition: max. 0,1 %rloss on drying (60 °C, 24 h) : 10,5 - 12,5 %rraspartic acid: max. 0,5 % r2,2'-[(2?,5?)-3,6-dioxopiperazine-2,5-diyl]diacetamide: max. 0,1 % rany unspecified impurities: max. 0,05 %rtotal : max. 0,8 %r