گلیسرول 99.5% ACS ریجنت کد 104057 مرک آلمان





Glycerol
(vegetable origin) for analysis EMSURE ACS,Reag. Ph Eur
Synonym(s): 1,2,3-Propanetriol, Trihydroxylpropane, Protol, Glycerin, 1,2,3-Propanetriol, Glycerin



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 %