G7893 Sigma-Aldrich


ACS reagent, ≥99.5%

Synonym: 1,2,3-Propanetriol, Glycerin

  • CAS Number 56-81-5

  • Linear Formula HOCH2CH(OH)CH2OH

  • Molecular Weight 92.09

  •  Beilstein/REAXYS Number 635685

  •  EC Number 200-289-5

  •  MDL number MFCD00004722

  •  PubChem Substance ID 329799969



Related Categories ACS Grade, ACS Grade Solvents, ACS and Reagent Grade Solvents, Aliphatic Compounds, Cell Biology,
Quality Level   200
grade   ACS reagent
vapor density   3.1 (vs air)
vapor pressure   <1 mmHg ( 20 °C)
assay   ≥99.5%
form   liquid
autoignition temp.   698 °F
expl. lim.   2.6-11.3 %
application(s)   electrophoresis: suitable
impurities   Acrolein and glucose, passes test
  Fatty acid esters, passes test
  H2SO4, passes test (darkened)
  Neutrality, passes test
  ≤0.003% Chlorinated compounds (as Cl)
  ≤0.500% Water (H2O)
ign. residue   ≤0.0050%
color   APHA: ≤10
refractive index   n20/D 1.474 (lit.)
pH   5.5-8
bp   182 °C/20 mmHg (lit.)
mp   20 °C (lit.)
density   1.25 g/mL (lit.)
anion traces   sulfate (SO42-): passes test
cation traces   heavy metals (as Pb): ≤2 ppm
SMILES string   OCC(O)CO
InChI   1S/C3H8O3/c4-1-3(6)2-5/h3-6H,1-2H2



1, 2, 4, 4×4 L in poly bottle

18 L in VerSA-Flow™

200 L in composite drum

500 mL in poly bottle


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.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
390.2 °F - Pensky-Martens closed cup
Flash Point(C) 
199 °C - Pensky-Martens closed cup


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What is the viscosity of glycerol?
The viscosity of glycerol is 648 Centistokes at 20 Deg C (68 Deg F).
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