Terbacil

Bezeichnung:Terbacil

CAS-Nr5902-51-2

Englisch Name:Terbacil

CBNumberCB8271017

SummenformelC9H13ClN2O2

Molgewicht216.66

MOL-Datei5902-51-2.mol

Synonyma

Terbacil

Terbacil physikalisch-chemischer Eigenschaften

Schmelzpunkt	175-177°
Dichte	1.3400
Brechungsindex	1.5388 (estimate)
storage temp.	0-6°C
Aggregatzustand	Solid
pka	8.79±0.40(Predicted)
Farbe	Off-white
Wasserlöslichkeit	0.71g/L(25 ºC)
Merck	13,9230
BRN	643054
NIST chemische Informationen	Terbacil(5902-51-2)
EPA chemische Informationen	Terbacil (5902-51-2)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22
RIDADR	None assigned
WGK Germany	2
RTECS-Nr.	YQ9360000
Giftige Stoffe Daten	5902-51-2(Hazardous Substances Data)
Toxizität	Approx. LD orally in rats: >5000 mg/kg (Hill)

Gefahreninformationscode (GHS)

Terbacil Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
Chemische Eigenschaften
Colorless crystals. Mp 175C. Soluble in dimethylacetamide and cyclohexanone; partially soluble in xylene and butyl acetate.
Verwenden
Nonselective herbicide used to control herbaceous and woody plants on noncrop land.
Verwenden
Terbacil is also absorbed by plant roots and inhibits photosynthesis. It is used for the selective control of many annual and some perennial weeds in apples, citrus, peaches, and sugarcane. Application rates range from 0.5 to 8 kg/ha.
Verwenden
Herbicide.
Definition
ChEBI: Terbacil is an organohalogen compound and a member of pyrimidines.
Allgemeine Beschreibung
Colorless crystals. Non corrosive. Used as an herbicide.
Air & Water Reaktionen
Water soluble.
Reaktivität anzeigen
A uracil derivative.
Landwirtschaftliche Anwendung
Herbicide: Terbacil is a selective herbicide that treats a broad spectrum of broadleaf weeds and grasses. It is formulated as a wettable powder and is applied by aircraft or ground equipment on terrestrial food and feed crops (e.g., apples, mint/peppermint/spearmint, sugarcane, and ornamentals), forestry [e.g., cottonwood (forest/shelterbelt)], terrestrialfood (e.g., asparagus, blackberry, boysenberry, dewberry, loganberry, peach, raspberry, youngberry and strawberry), and terrestrial feed (e.g., alfalfa, sainfoin (hay and fodder), and forage). Not approved for use in EU countries. Registered for use in the U.S.
Handelsname
COMPOUND® 732; DuPontTM® 732; EXPERIMENTAL HERBICIDE 732; GEONTER®; SINBAR®; TURBSVIL®; ZOBAR®[C]
Environmental Fate
Soil. In microbially active soils, tebuthiuron is degraded via demethylation. The average half-life in soil 12–15 months in areas receiving 60 inches of rainfall a year (Humburg et al., 1989).
Groundwater. According to the U.S. EPA (1986) terbacil has a high potential to leach to groundwater.
Plant. The major degradation products of [2-14C]terbacil identified in alfalfa using a mass spectrometer were (% of applied amount): 3-tert-butyl-5-chloro-6-hydroxymethyluracil (11.9) and 6-chloro-2,3-dihydro-7-(hydroxymethyl)-3,3-dimethyl-5H-oxa
Photolytic. Acher et al. (1981) studied the dye-sensitized photolysis of terbacil in aerated aqueous solutions over a wide pH range. After a 2-hour exposure to sunlight, terbacil in aqueous solution (pH range 3.0–9.2) in the presence of methylene blue (3 ppm) or riboflavin (10 ppm), decomposed to 3-tert-5-butyl-5-acetyl-5-hydroxyhydantoin. Deacylation was observed under alkaline conditions (pH 8.0 or 9.2) affording 3-tert-5- hydroxyhydantoin. In neutral or acidic conditions (pH 6.8 or 3.0) containing riboflavin, a mono-N-dealkylated terbacil dimer and an unidentified water-soluble product formed. Product formation, the relative amounts of products formed and the rate of photolysis were found to be all dependent upon pH, sensitizer, temperature and time (Acher et al., 1981).
Chemical/Physical. Stable in water (Worthing and Hance, 1991).
Stoffwechselwegen
When rats are administered terbacil orally, the primary biotransformation products of terbacil in the urine are derived from hydroxylation of the 6-methyl group and are identified as the aglycone, glucuronide, and sulfate. The other conjugated metabolite is the mercapturic acid conjugate of the 6-methyl substituent. Minor metabolites are identified as sulfoxides and sulfone at the 6-methyl substituent of terbacil.

Terbacil Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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