Potassium hydrogen aspartate hemihydrate, EP grade CAS 1115-63-5

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CAS: 1115-63-5

MF: C₄H₆KNO₄ · xH₂O

MW: 171.19 (anhydrous)

Physical Description	White to almost white crystalline powder, or colourless crystals
Specific Optical Rotation	+18.0 - +20.5 ° (anhydrous substance)
Identification (TLC)	To pass test
Identification	Reaction of potassium: To pass test
Solubility (2.5% in water)	Clear, colourless solution
pH (2.5% in water)	6.0 - 7.5
Ninhydrin-positive substances	To show two principle spots
Ninhydrin-positive substances	≤ 0.5% (any individual)
Chlorides	≤ 200ppm
Sulphates	≤ 500ppm
Ammonium (NH4)	≤ 200ppm
Iron (Fe)	≤ 30ppm
Water	4.0 - 6.0 %
Assay	99.0 - 101.0 % (anhydrous substance)
Pharmacopoeia Specification(s)	EP
Specification Version	1.0