Description Catalogue Number 821141 Synonyms Phosphoric acid triethyl ester, TEP Description Triethyl phosphate Product Information CAS number 78-40-0 EC index number 015-013-00-7 EC number 201-114-5 Hill Formula C₆H₁₅O₄P Chemical formula (C₂H₅O)₃PO Molar Mass 182.16 g/mol HS Code 2919 90 00 Structure formula Image Applications Application Triethyl phosphate for synthesis. CAS 78-40-0, EC Number 201-114-5, chemical formula (C₂H₅O)₃PO. Physicochemical Information Boiling point 215 °C (1013 hPa) Density 1.069 g/cm3 (20 °C) Explosion limit 1.2 - 10 %(V) Flash point 130 °C Ignition temperature 480 °C Melting Point -57 °C pH value 7 (H₂O, 20 °C) Vapor pressure 0.1 hPa (20 °C) Solubility 500 g/l (slow decomposition) Toxicological Information LD 50 oral LD50 Rat 1165 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H302: Harmful if swallowed. RTECS TC7900000 Storage class 10 - 13 Other liquids and solids 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. Safety Information Hazard Symbols Harmful Categories of danger harmful R Phrase R 22 Harmful if swallowed. S Phrase S 25 Avoid contact with eyes. Storage and Shipping Information Storage Store below +30°C. Specifications Assay (GC, area%) ≥ 99.0 % (a/a) Density (d 20 °C/ 4 °C) 1.068 - 1.069 Identity (IR) passes test