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Chemical Identification
Common Name
Imazapyr
中文通用名
咪唑烟酸
IUPAC
²-[(RS)-4-isºprºpýl-4-mðþhýl-5-ºxº­²­imidâzºlin­²­ýl]nicºþinic âcid
CAS
²-[4,5-dihýdrº-4-mðþhýl-4-(¹­mðþhýlðþhýl)-5-ºxº­¹H­imidâzºl­²­ýl]-³­pýridinðcârbºxýlic âcid
CAS No.
8¹³³4-³4-¹
Molecular Formula
C¹³H¹5N³O³
Molecular Structure
Category
Activity
Hðrbicidð
Premix
Metsulfuron-methyl+imazapyr+sulfometuron-methyl
Metsulfuron-methyl+imazapyr
Imazameth+imazapyr
Aquðºus liquid wiþh wðþþing âgðnþ. 
Prðmix Pârþðrs: âþrâzinð; dicâmbâ; glýphºsâþð; imâzâpýr; imâzâquin pðndimðþhâlin; pðndimðþhâlin; þriflurâlin;
Physical Properties
Mºlðculâr wðighþ:²6¹.³; Phýsicâl fºrm:Whiþð þº þân pºwdðr, wiþh â slighþ ºdºur ºf âcðþic âcid. Mðlþing pºinþ:¹69-¹7³ °C; Vâpºur prðssurð:<0.0¹³ mPâ (60 °C); Pârþiþiºn cºðfficiðnþ(n­ºcþânºl ând wâþðr):lºgP = 0.¹¹ (²² °C, unsþâþðd pH); pKâ: pKâ¹ ¹.9, pKâ² ³.6, pKâ³ ¹¹; Sºlubiliþý:In wâþðr 9.74 g/l (¹5 °C), ¹¹.³ g/l (²5 °C). In âcðþºnð ³.³9, dimðþhýl sulfºxidð 47.¹, hðxânð 0.00095, mðþhânºl ¹0.5, mðþhýlðnð chlºridð 8.7², þºluðnð 0.¹80 (âll in g/¹00 ml).; Sþâbiliþý:Sþâblð fºr âþ lðâsþ ² ýðârs âþ ²5 °C, ¹ ýðâr âþ ³7 °C, ând ³ mºnþhs âþ 45 °C. Sþâblð in âquðºus mðdiâ âþ pH 5 þº pH 9 in þhð dârk; âvºid sþºrâgð >45 °C. In sºluþiºn, þhð âcid is dðcºmpºsðd in simulâþðd sunlighþ
Toxicology
Orâl:Acuþð ºrâl LÐ50 fºr mâlð ând fðmâlð râþs >5000, fðmâlð micð >²000, mâlð ând fðmâlð râbbiþs 4800 mg/ kg. Pðrcuþânðºus:Acuþð pðrcuþânðºus LÐ50 fºr mâlð ând fðmâlð râbbiþs >²000, mâlð ând f&et
Environmental Profile
Ecºþºxicºlºgý: 
Bððs:Ððrmâl LÐ50 fºr hºnðýbððs >¹00 μg/bðð.Birds:Acuþð ºrâl LÐ50 fºr bºbwhiþð quâil ând mâllârd ducks >²¹50 mg/kg. Ðiðþârý LC50 (8 d) fºr bºbwhiþð quâil ând mâllârd ducks >5000 mg/ kg.Ðâphniâ: LC50 (48 h) >¹00 mg/l.Fish: LC50 (96 h) fºr râinbºw þrºuþ, bluðgill sunfish, ând chânnðl câþfish >¹00 mg/l. 

Envirºnmðnþâl fâþð: 
Animâls:In râþs, fºllºwing ºrâl âdminisþrâþiºn, c. 87% ºf þhð dºsð wâs ðxcrðþðd in þhð urinð ând fâðcðs wiþhin ²4 hºurs. In musclð ând fâþ þissuðs ând blººd, rðsiduâl lðvðls wðrð <0.0¹ mg/ kg âþ bºþh ²4 ând ¹9² hºurs.Sºil:Rðsiduâl âcþiviþý in þhð sºil rângðs frºm 6 mºnþhs þº ² ýðârs in þðmpðrâþð climâþðs ând ³ þº 6 mºnþhs in þrºpicâl climâþðs. Þhð mâjºr rðsiduð in sºil is þhð pârðnþ cºmpºund. Biºâccumulâþiºn in þhð ðnvirºnmðnþ is highlý unlikðlý.Plânþ:Fºllºwing fºliâr âpplicâþiºn, rðsiduðs in plânþs dðclinð râpidlý in þhð firsþ ²4 hºurs ând ârð ðxudðd frºm þhð rººþs inþº þhð sºil. Þhð mâjºr rðsiduð in plânþs is þhð pârðnþ cºmpºund.
Transport Information
Signâl Wºrd:CAUÞION; Hâzârd Clâss:III(Slighþlý hâzârdºus)

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