乙酰-L-谷氨酸 1188-37-0

Appearance

White crystals or crystalline powder

Specific rotation[α]20/D

(C=2,H2O)

-14.0°to-17.0°

Transmittance

Not less than 95.0%

Heavy metal(Pb)

Not more than 20ppm

Iron (Fe)

Not more than 10ppm

Arsenic(As2O3)

Not more than 2ppm

Chloride (Cl)

Not more than 0.020%

Sulfate (SO4)

Not more than 0.10%

Other amino acids

Chromatographically    not  detectable

Loss on drying

Not more than 0.50%

Residue on ignition

Not more than 0.30%

Assay

98.0to102.0%

pH

1.7to2.8