Specification :

Cyanazine

Common name: cyanazine
IUPAC name: 2-( 4-chloro-6-ethylamino-1, 3, 5-triazin-2-ylamino) -2-methylpropiononitrile
Ch emical Abstracts name: 2-[ [ 4-chloro-6-( ethylamino) -1, 3, 5-triazin-2-yl] amino] -2-methylpropanenitrile
CAS RN: [ 21725-46-2]

PHYSICAL CHEMISTRY
Composition: Tech. grade 95% pure. Mol. wt.: 240.7; M.f.: C9H13ClN6 Form: Tech. cyanazine is a white crystalline solid. M.p.: 167.5-169 º C ( tech., 166.5-167 º C) . V.p.: 2x10-4 mPa ( 20 º C) . KOW: logP = 2.1 S.g./ density: 1.29 kg/ l ( 20 º C) . Solubility: In water 171 mg/ l ( 25 º C) . In methylcyclohexanone, chloroform 210, acetone 195, ethanol 45, benzene, hexane 15, carbon tetrachloride 1200, rabbits > 2000 mg/ kg. Non-irritating to skin and eyes.
Inhalation: LC50 > 2460 mg/ m3 air, as cyanazine dust.
NOEL: ( 2 y) for rats 12, dogs 25 mg/ kg diet.
Toxicity class: WHO ( a.i.) II; EPA ( formulation) II ( DF, SC and WP) , III ( GR)
EC hazard: Xn; R22| N; R50, R53

ECOTOXICOLOGY
Birds: Acute oral LD50 for mallard ducks > 2000, quail 400 mg/ kg.
Fish: LC50 ( 48 h) for harlequin fish 10 mg/ l; LC50 ( 96 h) for fathead minnow 16 mg/ l.
Daphnia: LC50 ( 48 h) 42-106 mg/ l.
Algae: EC50 ( 96 h) 100 ug/ bee ( tech. in acetone) ; ( oral) > 190 ug/ bee ( tech. as dust) .

ENVIRONMENTAL FATE
Animals: In rats and dogs, following oral administration, cyanazine is rapidly metabolised and eliminated within c. 4 days.
Plants: In plants, the nitrile group is hydrolysed to a carboxylic acid group, and the chlorine atom is replaced by a hydroxy group.
Soil/ Environment: Microbial degradation in soil occurs within one growth period. Metabolism is similar to that in plants. DT50 in soil c. 2 w.