Description Catalogue Number 104091 Synonyms Glycerin, 1,2,3-Propanetriol, Trihydroxylpropane, Protol Product Information Grade Ph Eur,BP HS Code 2905 45 00 Structure formula Image Physicochemical Information Boiling point >130 °C (1013 hPa) Density 1.23 g/cm3 (20 °C) Flash point 199 °C Ignition temperature 429 °C Melting Point -10 °C pH value 5 (100 g/l, H₂O, 20 °C) Vapor pressure 8 hPa (20 °C) Safety Information according to GHS Storage class 10 Combustible liquids not in Storage Class 3 WGK WGK 1 slightly water endangering Disposal 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. Storage and Shipping Information Storage Store at +5°C to +30°C. Specifications Assay (alkalimetric after oxidation) 83.5 - 88.5 % Identity passes test Appearance of solution passes test Acidity or alkalinity passes test Refractive index (n 20/D) 1.449 - 1.455 Density (d 20/4) 1.216 - 1.233 g/cm³ Chloride (Cl) ≤ 0.0010 % halogenated compounds (as Cl) ≤ 0.0030 % Heavy metals (as Pb) ≤ 0.0005 % Aldehydes ≤ 10 ppm Acetone ≤ 0.5 % Other residual solvents (ICH Q3C) ...excluded by production process 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 % Esters passes test Sugar passes test Sulfated ash ≤ 0.01 % Water 12.0 - 16.0 % Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*). Corresponds to Ph Eur, BP