Assay（by GC-FID）

≥99.9%

Color

≤5 APHA

Fluorescence at emission maximum for impurities at

250 nm

≤1 ppb

GC-ECD Responsive residue (single peak) (as Heptachlorepoxide) 

≤10 ppt

GC-FID Responsive residue(single peak)(as 2-Octanol)

≤5 ppb

LC gradient elution suitability at

210 nm

≤3 mAU

254 nm

≤0.5 mAU

Residue after evaporation 

≤1 mg/L

Titrable acid

≤0.001 meq/g

Titrable base

≤0.001 meq/g

Water（by KF coulometry）

≤0.01%

Optical absorbance at

190 nm

≤1.00 AU

195 nm

≤0.14 AU

200 nm

≤0.05 AU

210 nm

≤0.04 AU

220 nm

≤0.020 AU

230 nm

≤0.010 AU

254 nm

≤0.005 AU

400 nm

≤0.005 AU