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Pentamethylenebis(triphenylphosphonium bromide), is used as an intermediate in Pharmaceutical research.
CF Hauser.; TW Brooks.; ML Miles. The Wittig Synthesis. I. Use of Certain Aliphatic Aldehydes As Intermediates in the Synthesis of Olefins1. J. Org. Chem. 196328(2) , 372-379.
Gefahrenhinweise (EU): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.