Test Items

Result

Assay CH3OH (GC)  ω / %

≥99.9

Appearance

Clear, Colorless

Density (20°C)  ρ / (g/mL)

0.791~0.793

Solubility in H2O.

Pass test

Evaporation Residue  ω / %

≤0.0005

Water (H2O)  ω / %

≤0.05

Titrable Acid.  / (mmol/g)

≤0.0004

Titrable Base.  / (mmol/g)

≤0.00008

UV Absorbance,(1.00-cm cell vs.water)

205nm

1.00

210nm

0.60

220nm

0.30

230nm

0.15

240nm

0.05

254nm

0.01

260nm

0.01

GC-ECD Responsive residue (single peak) (As γ-666) / (ng/L)

—

Gradient Test 254 nm / (AU)

≤0.005