Assay（by GC-FID）

≥99.9%

Formaldehyde

≤0.001%

Acetaldehyde

≤0.001%

Acetone

≤0.001%

Substances darkened by Sulfuric acid

Passes Test

Substances reducing Permanganate

Passes Test

Solubility in water

Passes Test

Color

≤10 APHA

Water(by KF coulometry)

≤500 ppm

Residue after evaporation

≤2 ppm

Titrable acid

≤0.0003 meq/g

Titrable base

≤0.0002 meq/g

Optical absorbance at

205 nm

≤1.00 AU

220 nm

≤0.25 AU

230 nm

≤0.15 AU

240 nm

≤0.05 AU

254 nm

≤0.01 AU

280 nm

≤0.005 AU

400 nm

≤0.005 AU

LC gradient elution suitability at

254nm

≤1 mAu