Cyromazine

Structural formula
General
Surname	Cyromazine
other names	N -cyclopropyl-1,3,5-triazine-2,4,6-triamine; Citation; Larvadex; Trigard; Vetrazine;
Molecular formula	C 6 H 10 N 6
External identifiers / databases
EC number	266-257-8
ECHA InfoCard	100.060.215
PubChem	47866
Wikidata	Q412423
properties
Molar mass	166.18 g · mol -1
Physical state	firmly
Melting point	223-227 ° C
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cyromazine is a triazine - derivative , as larvicide with contact action in a number of pesticides used.

Mode of action

Cyromazine inhibits the molting and pupation of certain insect larvae. It is harmless to adult bees. When used, it is absorbed by both leaves and roots of the plants and therefore shows a systemic effect. The main breakdown product is melamine .

synthesis

Cyromazine is produced from cyanuric chloride through reactions with cyclopropylamine and ammonia .

Admission

In Switzerland, plant protection products containing cyromazine were approved for use against leaf miners and fungus gnats in some horticultural crops. Today no pesticides containing this active ingredient are available there. In some EU countries, but not in Austria and Germany, plant protection products with the active ingredient cyromazine are approved.

Cyromazin is also used in Germany and Switzerland as a biocide to combat fly larvae in liquid manure and manure.

In Switzerland there is a relatively high maximum residue level of 12 milligrams of cyromazine per kilogram for lily lettuce .

Individual evidence

↑ ^a ^b ^c data sheet cyromazine from Sigma-Aldrich , accessed on May 14, 2017 ( PDF ).
↑ Entry on cyromazine. In: Römpp Online . Georg Thieme Verlag, accessed on August 12, 2016.
↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 646 ( online ).
↑ General Directorate Health and Food Safety of the European Commission: Entry on Cyromazine in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 11, 2016.
↑ Ordinance of the EDI on the maximum levels for pesticide residues in or on products of plant and animal origin. In: admin.ch . Retrieved February 6, 2020 .

[Sigma-1] ta sheet cyromazine from Sigma-Aldrich , accessed on May 14, 2017 ( PDF ).

[2] Entry on cyromazine. In: Römpp Online . Georg Thieme Verlag, accessed on August 12, 2016.

[unger-3] Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 646 ( online ).

[PSM-4] General Directorate Health and Food Safety of the European Commission: Entry on Cyromazine in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 11, 2016.

[5] Ordinance of the EDI on the maximum levels for pesticide residues in or on products of plant and animal origin. In: admin.ch . Retrieved February 6, 2020 .