简要说明：同晟牌的D-焦谷氨酸4042-36-8产品：估价：1，规格：完善，产品系列编号：齐全

　　 

Item	Standard	Analysis data
Appearance	White crystals	Conforms
Specific rotation[α]D/20 (C=2  in H2O)	+10.8°to +12.3°	+11.65°
Melting Point (ºC)	159 to 161 ºC	160.5ºC
Chloride(C1)	Not more than 0.02%	0.005%
Sulfate(SO4)	Not more than 0.02%	0.005%
Iron(Fe)	Not more than 10ppm	9ppm
Heavy metals(Pb)	Not more than 10ppm	<10ppm
Arsenic(As2O3)	Not more than 1ppm	<1ppm
Loss on drying	Not more than 0.50%	0.40%
Residue on ignition	Not more than 0.10%	0.09%
Assay（HPLC）	98.0%～101.0%	99.3%