Synonyms: 1,2,3-Propanetriol; Glycerin
Formula: HOCH2CH(OH)CH2OH
Formula Weight: 92.09
CAS No.: 56-81-5
Purity: ≥99.5% (GC)
Density: 1.25 g/mL(lit.)
Application: Glycerol is used both in sample preparation and gel formation for polyacrylamide gel electrophoresis. Glycerol (5-10%) increases the density of a sample so that the sample will layer at the bottom of a gel’s sample well. Glycerol is also used to aid in casting gradient gels and as a protein stabilizer and storage buffer component.
Anion Traces: sulfate (SO42-): ≤10 mg/kg
Assay: ≥99.5% (GC)
Autoignition Temp.: 698°F
BP: 182°C/20 mmHg(lit.)
Cation Traces: Cd: ≤1 mg/kg
Density: 1.25 g/mL(lit.)
Grade: puriss. p.a.
Ign. Residue: ≤0.005%
Impurities: ≤0.05% fatty acid esters (as butyric acid)
MP: 20°C(lit.)
Quality: dist.
Refractive Index: n20/D 1.474(lit.)
Vapor Density: 3.1 (vs air)
Vapor Pressure: <1 mmHg ( 20°C)