Item

Value

characteristics

white or off white clean or crystalline powder

Melting point

205.0～209.0℃

Acidity

2.5～3.5

Loss on dry

≤0.5%

Residue on ignition

≤0.1%

Heavy metal ( As Pb)

≤30PPM

Assay( dry C8H11NO3·HCL)

98.0%～101.0%