High purity solvent,
Low residue Low water,
Low UV-absorbance,
assuring optimum sensitivity,
lang term stability
Gradient Grade Methanol Specification
CAS.No:67-56-1
Molecular formula: CH3OH
Molecular weight: 32.04.
Refractive Index: 1.3288
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 | |
