Description Catalogue Number 109731 Synonyms THF, Tetramethylene oxide, Oxolane, Butylene oxide Description Tetrahydrofuran Overview EMSURE® grade solvents are suitable for a broad spectrum of classical lab applications, and are frequently used in regulated and highly demanding lab applications. EMSURE® provides worldwide best and most extensive product specifications. We declare our EMSURE® range to be in compliance with the ACS, with the reagent part of the European Pharmacopoeia (Reag. Ph Eur) and also with the ISO standards. Product Information CAS number 109-99-9 EC index number 603-025-00-0 EC number 203-726-8 Grade ACS,Reag. Ph Eur Hill Formula C₄H₈O Chemical formula C₄H₈O Molar Mass 72.11 g/mol HS Code 2932 11 00 Structure formula Image Applications Application Tetrahydrofuran for analysis EMSURE® ACS,Reag. Ph Eur. CAS 109-99-9, EC Number 203-726-8, chemical formula C₄H₈O. Physicochemical Information Boiling point 65 - 66 °C (1013 hPa) Density 0.89 g/cm3 (20 °C) Explosion limit 1.5 - 12.4 %(V) Flash point -21.5 °C Melting Point -108.5 °C pH value 7 - 8 (200 g/l, H₂O, 20 °C) Vapor pressure 173 hPa (20 °C) Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H225: Highly flammable liquid and vapour. H302: Harmful if swallowed. H319: Causes serious eye irritation. H335: May cause respiratory irritation. H351: Suspected of causing cancer. EUH019: May form explosive peroxides. Precautionary Statement(s) P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P240: Ground/bond container and receiving equipment. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P313: IF exposed or concerned: Get medical advice/ attention. P403 + P233: Store in a well-ventilated place. Keep container tightly closed. RTECS LU5950000 Storage class 3 Flammable liquids WGK WGK 1 slightly water endangering Disposal 1 Strongly contaminated halogen-free organic solvents: container A. Safety Information Hazard Symbols Irritant Flammable Categories of danger highly flammable, carcinogenic, irritant R Phrase R 11-19-40-36/37 Highly flammable.May form explosive peroxides.Limited evidence of a carcinogenic effect.Irritating to eyes and respiratory system. S Phrase S 16-29-33 Keep away from sources of ignition - No smoking.Do not empty into drains.Take precautionary measures against static discharges. Storage and Shipping Information Storage Store at +5°C to +30°C. Transport Information Declaration (railroad and road) ADR, RID UN 2056 , 3, II Declaration (transport by air) IATA-DGR UN 2056 , 3, II Declaration (transport by sea) IMDG-Code UN 2056 , 3, II Specifications Purity (GC) ≥ 99.8 % Identity (IR) conforms Appearance clear Colour ≤ 10 Hazen Density (d 20 °C/20 °C) 0.885 - 0.895 Acidity ≤ 0.0003 meq/g Alkalinity ≤ 0.0002 meq/g Peroxides conforms Peroxide (as H₂O₂) ≤ 0.005 % Al (Aluminium) ≤ 0.00005 % B (Boron) ≤ 0.000002 % Ba (Barium) ≤ 0.00001 % Ca (Calcium) ≤ 0.00005 % Cd (Cadmium) ≤ 0.000005 % Co (Cobalt) ≤ 0.000002 % Cr (Chromium) ≤ 0.000002 % Cu (Copper) ≤ 0.000002 % Fe (Iron) ≤ 0.00001 % Mg (Magnesium) ≤ 0.000002 % Mn (Manganese) ≤ 0.000002 % Ni (Nickel) ≤ 0.000002 % Pb (Lead) ≤ 0.00001 % Sn (Tin) ≤ 0.00001 % Zn (Zinc) ≤ 0.00001 % Evaporation residue ≤ 0.0005 % Water ≤ 0.03 % Stabilized with 2,6-Di-tert-butyl-4-methylphenol (BHT).
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