متانول 99.9% برای کروماتوگرافی مایع کد 106007 مرک آلمان





Methanol
≥99.9% (by GC), LiChrosolv Reag. Ph. Eur., gradient grade for liquid chromatography
Synonym(s): Methyl alcohol



Analysis Note

Evaporation Number: 1.9
Purity (GC): ≥ 99.9 %
Identity (IR): conforms Evaporation residue: ≤ 2.0 mg/l
Water: ≤ 0.02 %
Color: ≤ 10
Hazen Density (d 20 °C/20 °C): 0.791 - 0.793
Boiling point: 64 - 65 °C
Acidity: ≤ 0.0002 meq/g
Alkalinity: ≤ 0.0002 meq/g
Gradient grade (at 235 nm): ≤ 2.0 mAU
Gradient grade (at 254 nm): ≤ 1.0 mAU
Fluorescence (as quinine at 254 nm): ≤ 1.0 ppb
Fluorescence (as quinine at 365 nm): ≤ 0.5 ppb
Transmission (at 210 nm): ≥ 20 %
Transmission (at 220 nm): ≥ 60 %
Transmission (at 230 nm): ≥ 75 %
Transmission (at 235 nm): ≥ 83 %
Transmission (at 250 nm): ≥ 95 %
Transmission (from 260 nm): ≥ 98 %
Absorbance (at 225 nm): ≤ 0.170
Filtered by 0.2 µm
filter. Suitable for UPLC / UHPLC /Ultra HPLC - instruments.
Conforms to Methanol R1 and R2 according to Reag. Ph Eur;
conforms to the requirements of ACS for liquid chromatography suitability.