Specifications: PRISTINE® Methanol, LC-MS Grade (Formatted)

Methanol

Product Number: 1935-5
Product Information
Formula CH3OH
Molecular Weight 32.04
Grade LC-MS
CAS Number 67-56-1
Beilstein/REAXYS Number 1098229
EC Number 200-659-6
MDL number MFCD00004595
UNSPSC Code 12191502
Exp. Date after Mfg. Date 3 years
Test Method ACS 11th Edition
Specifications
Meets ACS Specification Yes
Appearance (color) Colorless
Form Liquid
Purity (GC area %) Min 99.9%
Assay (by GC) Min 99.9 %
Color (APHA) Max 10
Water Max 0.03 %
Residue after evaporation Max 1 ppm
Ultraviolet Spectrophotometry
UV Absorbance 220 nm Max 0.25
UV Absorbance 230 nm Max 0.15
UV Absorbance 233 nm Max 0.02
UV Absorbance 235 nm Max 0.01
Gradient Elution Test
Largest eluted peak (254nm) Max 2 mAU
Fluorescence Trace Impurities
at 450nm Emission Max 0.3 ppb
at Emission Max for impurities Max 0.5 ppb
Physical Properties
Vapor Pressure 128 hPa (20 °C)
410 mmHg (50 °C)
97.68 mmHg (20 °C)
Vapor Density 1.11 (vs air)
Boiling Point 64.7 °C (lit.)
Melting Point −98 °C (lit.)
Density 0.791 g/mL at 25 °C (lit.)
Autoignition Temperature 725 °F
Explosion Limit 36 %
Refractive Index n20/D 1.329 (lit.)