Test Items

Units

Specifications

Assay CH₃OH(GC)

%

≥99.99

Density(20℃)

g/mL

0.791～0.793

Solubility with H₂O

Pass test

Residue on evaporation

%

≤0.0001

Water

%

≤0.03

Acidity(as H⁺)

mmol/g

≤0.0002

Alkalinity(as OH^-)

mmol/g

≤0.0001

Absorbance at 205 nm

Abs.Units

≤1.0

Absorbance at 210 nm

Abs.Units

≤0.60

Absorbance at 220 nm

Abs.Units

≤0.20

Absorbance at 230 nm

Abs.Units

≤0.10

Absorbance at 250 nm

Abs.Units

≤0.02

Absorbance at 400nm

Abs.Units

≤0.005

254nm Gradient Elution Test

mAU

≤2

235nm Gradient Elution Test

mAU

≤2

Fluorescence impurity at 254 nm

ppb

≤1.0

Fluorescence impurity at 365 nm

ppb

≤1.0