Assay（by GC-FID）

≥99.8%

Color

≤10 APHA

Residue after evaporation

≤3 ppm

Substances darkened by Sulfuric acid

Pass the test

Titrable acid

≤0.0009 meq/g

Water（by KF coulometry）

≤0.05%

Optical absorbance at

255 nm

≤1.00 AU

260 nm

≤0.15 AU

280 nm

≤0.05 AU

300 nm

≤0.01 AU

330 nm

≤0.01 AU

350 nm

≤0.005 AU