Assay(By GC-FID)

≥99.9%

Formaldehyde

≤0.001%

Acetaldehyde

≤0.001%

Acetone

≤0.001%

Substances reducing Permanganate

Passes Test

Substances darkened by Sulfuric acid

Passes Test

Solubility in water

Passes Test

Color

≤10APHA

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

210 nm

≤0.5 AU

220 nm

≤0.25 AU

240 nm

≤0.1 AU

254 nm

≤0.02 AU

280 nm

≤0.01 AU

400 nm

≤0.01 AU

254 nm

≤0.02 AU

280 nm

≤0.01 AU

400 nm

≤0.01 AU