2,4-D (20) EXPLANATION

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2,4-D1792,4-D (20)EXPLANATION2,4-D was first evaluated in 1970 (T, R), and the last evaluations are from 1986/87 (R) and 1996 (T).The 1997 JMPR evaluated effects on the ,4-D was proposed for re-evaluation by the Working Group on Priorities at the 1989 CCPRas the ADI was established before 1976 (ALINORM 89/24A, para 299 and Appendix V). It wasstated at the 1990 CCPR that there was continued use and manufacturers might be able to submitdata (ALINORM 91/24 para 360, Appendix V part I). The review was tentatively scheduled for1994. The compound was later rescheduled to the 1996 JMPR, and then to the 1998 present evaluation is within the CCPR Periodic Review members of the industry taskforce which supplied most of the information were AGRO-GOR, Dow Elanco, Nufarm and Rh ne Poulenc, who provided data on metabolism andenvironmental fate, analytical methods, use patterns, residue t

180 2,4-D Physical and chemical properties Pure active ingredient Appearance: white to brown crystals, granules, flakes, powder or lumps Vapour pressure: 1.9 x 10-5 Pa at 25°C ( Chakrabarti and Gennrich, 1987a) Melting point: 140.5°C

  Chemical, Physical, Properties, 4 d physical and chemical properties