L-Istidina monocloridrato monoidrato, Pharmpur®, Ph Eur, BP

- Synonyms: (S)-a-Amino-1H-imidazole-4-propanoic acid
- C6H9N3O2·HCl·H2O
- M = 209,63 g/mol
- CAS [5934-29-2]
- EINECS-No.: 211-438-9
- Solub. in water: (20 ºC): 169,9 g/l
- Melting point: 259 ºC (decomposes)
- Tariff number: 2933 29 90 90
- Applications: in biochemistry, for pharmaceutical use, in pharma industry.

SPECIFICATIONS

dried sample) : 98,5 - 101,0 %
identity (IR-spectrum): passes test
Identification TLC: passes test
Identification E (EP): passes test
Identification chloride: passes test
appearance of solution: passes test
specific rotation ([a]20°/D, c = 11, HCl 6 mol/l): + 9,2 º - + 10,6 °
pH (5 %, H2O): 3,0 - 5,0
sulfates (SO4): max. 300 ppm
ammonium (NH4): max. 200 ppm
iron (Fe): max. 10 ppm

any ninhydrin-positive substances: max. 0,2 %
total: max. 0,25 %
residue on ignition: max. 0,1 %
loss on drying (150 °C) : 7 - 10 %

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