Item

Specification

Appearance

Almost colorless to yellow liquid

Identification

IR chromatograph conforms to the characteristic peak of R.S.

HPLC retention time should of sample should be concordant with that of reference standard.

Moisture

≤0.5%

Ignition residue

≤0.3%

Related substances

Max. Individual impurity≤0.5%

Total impurites≤1.0%

Residual solvent (GC)

Methanol≤3000ppm

Ethanol≤5000ppm

Acetone≤5000ppm

Methylene chloride≤600ppm

toluene≤890ppm

Purity (HPLC)

≥99%

Assay (HPLC)

98.0%~102. 0%