Metribuzin is slightly toxic to shrimp. 7 Pages. December 13, 1993.
Comparative toxic doses (TD) and lethal doses (LD) of selected herbicides in domesticated species, such as monkeys, cattle, sheep, pigs, cats, dogs, and chickens, is also summarized (see Table: Oral Toxic Doses (TD) and Lethal Doses (LD) of Herbicides in Domestic Species). It is known for its efficiency and relatively low toxicity. estuarine fish species and an oyster species, and appro- priate environmental fate data are fulfilled. November 5, 1985. information, 2) updated intake rates that include higher intake rates in children, and 3) rounding to one significant digit. H�9�����d#1��S~ ~$
Effects on Birds: Metribuzin is moderately to slightly toxic to birds. Memorandum. 5 Pages. Memorandum. Memorandum. February 17, 1987. In order to avoid wasteful duplication of effort, information from the following
18 Pages. Metribuzin is slightly toxic to shrimp. Accession # 257920. Memorandum. Later, manufacturers of metribuzin resolved this once they submitted the necessary data to disprove these concerns. Elizabeth Zucker. 867 0 obj
<>/Filter/FlateDecode/ID[<52E04B33598E6B4BB65785F8DD771259><798769E7DAE6494ABC32509BE07971A7>]/Index[851 27]/Info 850 0 R/Length 83/Prev 61069/Root 852 0 R/Size 878/Type/XRef/W[1 2 1]>>stream
55 Pages. Memorandum. 70 Pages. September 7, 1994. endstream
endobj
startxref
6 Pages. Data Eval. Memorandum. A Copy of the Final Report of Metribuzin Addendum Dated July 18, 1985 is Attached to this Memo. October 27, 1989. 132 Pages.
17 Pages.
During the 1980s, metribuzin was restricted in its use classification by the EPA because of questions regarding groundwater contamination and chronic toxicity. Rec. Memorandum. Memorandum. 5 Pages.Science Reviews Previously Released under FOIA
Memorandum. In arriving at the regulatory determination, data on toxicokinetics, human exposure, acute and chronic toxicity to animals and humans, epidemiology, and mechanisms of toxicity were evaluated.
A detailed ecological hazard assessment cannot be made until the acute dietary study on an upland gamebird, acute toxicity studies on a marine!
IRIS assessment development process. 11 Pages. 16 Pages. Sections I (Health Hazard Assessments for …
Memorandum. Metribuzin - 3 of 6 . February 6, 1986. February 5, 1979. 4 Pages. MDH reevaluated the HBVs in 2012 to incorporate HED methodology. $��A�9 "D�{ ��@�+
Memorandum. January 15, 1992. February 3, 1987. 6 Pages. The aim of this study was to assess the impact of metribuzin in surface waters on fish under experimental conditions. 877 0 obj
<>stream
No. Memorandum. January 28, 1991. February 9, 1979. Memorandum. 284 Pages. September 13, 1991. November 15, 1985. The photolysis of metribuzin has been studied in greatest detail by Raschke and coworkers (Raschke et al., 1998a, b).The photolysis (254 nm) of an aqueous solution of metribuzin was initially characterized by side-chain deamination to form deaminometribuzin (DA-metribuzin) and sulfoxidation and dealkylation of the 3-methylthio side chain to form diketometribuzin (DK-metribuzin) (Figure 23.7). 26 Pages. Ecological Effects Branch. 295 Pages.
December 7, 1992.
Metribuzin; CASRN 21087-64-9 Human health assessment information on a chemical substance is included in the IRIS database only after a comprehensive review of toxicity data, as outlined in the . December 10, 1985. The effects of subchronic exposure to metribuzin on fish growth and the development of histopathological changes in selected organs (gill, kidney, liver) and on activity of some biochemical markers (CYP450, EROD) in Danio rerio were investigated during a 28-day toxicity test. Metribuzin is poorly bound to most soils and soluble in water, giving it a potential for leaching in many soil types .The residue half-life is from 30-120 days. EPA Reg. January 23, 1985. Effects on Aquatic Organisms: Metribuzin is slightly toxic to fish.
December 20, 1988. A detailed ecological hazard assessment cannot be made until the acute dietary study on an upland gamebird, acute toxicity studies on a marine/estuarine fish species and an oyster species, and appropriate environmental fate data are fulfilled. Memorandum. Memorandum. 38 Pages. 851 0 obj
<>
endobj
3125-270. h�b```�w,��|���ea���(� `Z�.�e�ܓ���6���8:8 I
X7��7@���Qf�a ��L�VUJQ�l�6i7����Y`���Vi� �, J������
` � C