GLYCEROL (VEGETABLE ORIGIN) FOR ANALYSIS EMSURE(R) ACS REAG. PH EUR (C15-1249-105)

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product is a bio-based glycerol and is aligned with the 5th principle of Green Chemistry "Safer Solvents and Auxiliaries" and 7th principle "Use of Renewable Feedstock".

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.

Analysis Note

Assay (GC, calc. on anhydr. substance): ≥ 99.5 %
Assay (alkalimetric, calculated on anhydrous substance): 98.0 - 101.0 %
Identity: passes test
Color: ≤ 10 APHA
Appearance of solution: passes test
Acidity or alkalinity: passes test
Free acid (CH₃COOH): ≤ 0.002 %
Neutrality: passes test
Refractive index (n 20/D): 1.470 - 1.475
Chloride (Cl): ≤ 0.0010 %
Sulfate (SO₄): ≤ 0.001 %
Halogenated compounds (as Cl): ≤ 0.0030 %
Heavy metals (as Pb): ≤ 0.00020 %
Al (Aluminium): ≤ 0.00005 %
B (Boron): ≤ 0.000002 %
Ba (Barium): ≤ 0.00001 %
Ca (Calcium): ≤ 0.0001 %
Cd (Cadmium): ≤ 0.000005 %
Co (Cobalt): ≤ 0.000005 %
Cr (Chromium): ≤ 0.000002 %
Cu (Copper): ≤ 0.000005 %
Fe (Iron): ≤ 0.00001 %
Mg (Magnesium): ≤ 0.0001 %
Mn (Manganese): ≤ 0.00001 %
Ni (Nickel): ≤ 0.000002 %
Pb (Lead): ≤ 0.00001 %
Sn (Tin): ≤ 0.00001 %
Zn (Zinc): ≤ 0.00001 %
Methanol: ≤ 3000 ppm
Other residual solvents (ICH Q3C): ...excluded by production process
Acrolein and glucose: passes test
Aldehydes: ≤ 10 ppm
Diethylene glycol and related Substances (impurity A): ≤ 0.1 %
Diethylene glycol and related Substances (any further impurity): ≤ 0.1 %
Diethylene glycol and related Substances (Sum of all impurities): ≤ 0.5 %
Fatty acids and esters (as Butyric acid): ≤ 0.05 %
Substances darkened by sulfuric acid: passes test
Sugar: passes test
Sulfated ash: ≤ 0.005 %
Water: ≤ 0.5 %

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany