Assay (by GC) ≥98.5%
Density at 20/4 ℃ 0.801 ~ 0.802
APHA colour ≤10
Non-volatile matter ≤0.001%
Acidity ≤0.0005 meq/g
Alkalinity ≤0.0002 meq/g
Water (KF) ≤0.1%
UV Spectrum (1.00 cm cell vs. water) 紫外光谱
λ208nm ≥ 10%
λ210nm ≥ 15%
λ220nm ≥ 65%
λ250nm ≥ 94%
λ270~450nm ≥ 98%
Suitability for IR spectrometry passes test