产品名称 DL-丝氨酸
Product Name DL-Serine
CAS # 5619-04-5
Iron (Fe) NMT 30 ppm
Total viable aerobic count NMT 1000 CFU/g
Moulds and Yeasts NMT 100 CFU/g
Appearance White or almost white crystalline powder or colourless crystals
Specific Rotation [a]D20o +0.5 to –0.5 degree
Chloride (Cl) NMT 500 ppm
Heavy Metals (Pb) NMT 15 ppm
Sulfate (SO4) NMT 300 ppm
Assay 98.5 to 101.5 %
Escherichia coli in 1 g not detectable
Residue in Ignition NMT 0.1 %
Loss on Drying NMT 0.2 %
