Bensulfuron methyl

Bezeichnung:Bensulfuron methyl

CAS-Nr83055-99-6

Englisch Name:Bensulfuron methyl

CBNumberCB2680057

SummenformelC16H18N4O7S

Molgewicht410.4

MOL-Datei83055-99-6.mol

Bensulfuron methyl physikalisch-chemischer Eigenschaften

Schmelzpunkt	185-188°C
Dichte	1.4087 (rough estimate)
Brechungsindex	1.6000 (estimate)
storage temp.	0-6°C
Löslichkeit	Acetonitrile (Slightly), Dichloromethane (Slightly), DMSO (Slightly)
Aggregatzustand	Solid
pka	12.34±0.70(Predicted)
Farbe	White to pale yellow
Geruch (Odor)	odorless solid
BRN	7447488
Stabilität	Moisture Sensitive, Unstable in Solution
InChI	InChI=1S/C16H18N4O7S/c1-25-12-8-13(26-2)18-15(17-12)19-16(22)20-28(23,24)9-10-6-4-5-7-11(10)14(21)27-3/h4-8H,9H2,1-3H3,(H2,17,18,19,20,22)
InChIKey	XMQFTWRPUQYINF-UHFFFAOYSA-N
SMILES	C(OC)(=O)C1=CC=CC=C1CS(NC(NC1=NC(OC)=CC(OC)=N1)=O)(=O)=O
CAS Datenbank	83055-99-6
EPA chemische Informationen	Bensulfuron-methyl (83055-99-6)

Sicherheit

Kennzeichnung gefährlicher	Xi;N,N,Xi
R-Sätze:	43-51/53
S-Sätze:	2-24-37-61
RIDADR	UN 3077 9/PG 3
WGK Germany	2
RTECS-Nr.	DG8733000
HS Code	29350090
Toxizität	LD50 orl-rat: >5 g/kg NNGADV 16,343,91

Gefahreninformationscode (GHS)

Bensulfuron methyl Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R43:Sensibilisierung durch Hautkontakt möglich.
R51/53:Giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S2:Darf nicht in die Hände von Kindern gelangen.
S24:Berührung mit der Haut vermeiden.
S37:Geeignete Schutzhandschuhe tragen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Beschreibung
Bensulfuron-methyl (BSM) is a new kind of sulfonylurea herbicide widely used to control various weeds and sedges. It is moderately soluble in water, non-volatile and moderately mobile. It would not be expected to persistent in soil but could be persistent in water systems under certain conditions. It is not highly toxic to mammals. It also shows a low toxicity to birds and earthworms but is more of a concern to aquatic plants, algae and honeybees.
Chemische Eigenschaften
Pure product is white odorless solid, m.p. 185-188℃, vapor pressure 1.733×10-3Pa (20℃). Solubility: dichloromethane 11720mg/L, acetonitrile 5380mg/L, xylene 280mg/L, ethyl acetate 1660mg/L, acetone 1380mg/L, methanol 990mg/L, hexane 3.1mg/L, water 1200mg/L. Partition coefficient is 4.1, stable in slightly alkaline (pH=8) aqueous solution, slowly decomposed in acidic solution. The half-life is 11d at pH 5 and 143d at pH 7. The original drug is slightly light yellow.
Verwenden
Bensulfuron methyl (BSM) was the first sulfonylurea herbicide commercialized for use in rice, and it remains the dominant sulfonylurea for broadleaf and sedge weed control in this crop.
Definition
ChEBI: Bensulfuron-methyl is the methyl ester of bensulfuron. An acetolactate synthase inhibitor, it is used as a herbicide for the control of a variety of both annual and perennial weeds in crops, particularly wheat and rice. It is not licensed for use within the UK. It has a role as a herbicide, an agrochemical and an EC 2.2.1.6 (acetolactate synthase) inhibitor. It is a N-sulfonylurea, a member of pyrimidines, a methyl ester and an aromatic ether. It derives from a bensulfuron.
Sicherheitsprofil
Moderately toxic by ingestion.When heated to decomposition it emits toxic vapors ofNOx and SOx.
Stoffwechselwegen
Bensulfuron methyl is metabolized by mammals and birds and the major metabolites identified include mono-O-demethylated and 5-hydroxylated bensulfuron methyl and 5-hydroxy-2-amino-3,5- dimethoxypyrimidine. As bird metabolites, cleavage of the pyrimidine ring of bensulfuron methyl is observed which results in two pyrimidine ring-opening metabolites. In rice plants, bensulfuron methyl undergoes rapid O-demethylation at one of the methoxy groups on the pyrimidine ring which will proceed through hydroxylation at the methyl group. Alcoholysis and hydrolysis of bensulfuron methyl (H1) involve mainly the breakdown of the urea moiety which leads to several degradation products, some of which are also identified as metabolites in mammals and plants.

Bensulfuron methyl Upstream-Materialien And Downstream Produkte

Bensulfuron methyl Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

83055-99-6, Bensulfuron methyl Verwandte Suche:

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