Orbencarb

Structural formula
General
Surname	Orbencarb
other names	S - (2-chlorobenzyl) diethyl thiocarbamate Lanray
Molecular formula	C 12 H 16 ClNOS
Brief description	yellowish liquid
External identifiers / databases
CAS number 34622-58-7 EC number 609-008-4 ECHA InfoCard 100.119.580 PubChem 36867 Wikidata Q17461535
properties
Molar mass	257.78 g mol −1
Physical state	liquid
boiling point	158 ° C (133 Pa )
solubility	practically insoluble in water (24 mg l −1 at 20 ° C)
Refractive index	1.60 (20 ° C)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 302-331 P: 261-311
Toxicological data	1420 mg kg −1 ( LD 50 ,  rat ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Orbencarb is a chemical compound from the group of thiocarbamates . Orbencarb was developed as a herbicide by Kumiai Chemical and launched in 1970.

Extraction and presentation

Orbencarb can be obtained by reacting dimethylamine with carbonyl sulfide and its product with 2-chlorobenzyl bromide.

use

Orbencarb is used in the cultivation of grain, corn, soy, cotton and potatoes. The effect depends on the soil moisture and decreases when the max. Field capacity drops below 40–45%. Crops such as maize tolerate orbencarb treatment because they oxidize it quickly to sulfoxide or sulfone .

Admission

No plant protection products containing this active ingredient are permitted in the EU or Switzerland .

Individual evidence

1. ↑ ^{a b c d e f g} Entry on Orbencarb. In: Römpp Online . Georg Thieme Verlag, accessed on July 20, 2014.
2. ↑ ^{a b c} Orbencarb data sheet at Sigma-Aldrich , accessed on May 21, 2017 ( PDF ).
3. ↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 113 ( limited preview in Google Book search).
4. ↑ General Directorate Health and Food Safety of the European Commission: Entry on Orbencarb in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 26, 2016.