Mise à jour d'une déclaration précédente
No de la demande: 2007-8956
Numéro de référence du titulaire d'homologation: 113007-01 DTF
Nom du titulaire (nom légal complet, aucune abbréviation): Industry Task Force II on 2,4-D Research Data (members: Agro-Gor Corporation, Dow AgroSciences and Nufarm USA, Inc.)
Adresse: 1900 K Street, NW
Ville: Washington
État: DC
Pays: USA
Code postal /Zip: 20006-1108
Étude scientifique
ARLA No d'homologation ARLA No de la demande d'homologation 2004-3086 EPA No d'homologation.
Nom du produit: 2,4-D Acid
Inconnu
Inconnu
Titre 2,4-D pharmacokinetics (PK) rangefinding study
Date 30-NOV-07
Non
Nouveau danger pour la santé ou pour l'environnement
Study initiated in response to US EPA 2,4-D RED Data Call-In. Preliminary findings from the PK study using Sprague-Dawley rats; five doses: 0, 100, 400, 800, 1200, 1600 ppm in a feed diet. Study initiated Aug 17, 2007; Exposure: 4 week pre-breed, continued exposure through 2 weeks mating, gestation, lactation and continued exposure to PND 35. Prelim results: 1. Statistically significant decreased feed consumption in females at 1600 ppm first week of gestation; 2. Biologically significant decreased weight gain in females during lactation at 1200 and 1600 ppm; statistically significant decreased feed consumption during lactation in females at 800, 1200, and 1600 ppm; 3. Statistically significant decreased weight gain of pups at 800, 1200 and 1600 ppm during lactation; 4. 1600 ppm pups discontinued for humane concerns at PND 17 because of significant decreased weight gain and morbidity; 5. 1200 ppm pubs sacrificed based on humane concerns at PND 21 because of significant decreased weight gain, immaturity, and a few pup deaths; 6. Adult males have not to date shown significant signs of toxicity except for biologically significant decreased weight gain at 2000 ppm early in the pre-breed period; 7. There were no treatment-related effects on live litter size, number of dead pups at birth or pup weight at birth; and, 8. There is no evidence of unique susceptibility to the offspring in this study.
Non
16-JUN-08