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Ethyl trifluoromethanesulfonate is a powerful ethylating agent.
Shiro Kobayashi; Hidenori Danda; Takeo Saegusa. Superacids and Their Derivatives. IV. Kinetic Studies on the Ring-Opening Polymerization of Tetrahydrofuran Initiated with Ethyl Trifluoromethanesulfonate by Means of 19F and 1H Nuclear Magnetic Resonance Spectroscopy. Evidence for the Oxonium-Ester Equilibrium of the Propagating Species. Macromolecules. 1974, 7, (4), 415-420.
P Dreyfuss and M P Dreyfuss. The Formation of Cyclic Oligomers Accompanying the Polymerization of Oxetane. Polymer Journal. 1976, 8, 81-87.
Hazard Statements: H226-H314-H318
Flammable liquid and vapour. Causes severe skin burns and eye damage. Causes serious eye damage.
Precautionary Statements: P280-P303+P361+P353-P305+P351+P338-P310a
Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.