Organophosphorus insecticide Acaricide, nematicide triazophos 400g/L EC
Chemical Name: O,O-diethyl O-(1-phenyl-1H-1,2,4-triazol-3-yl)-thiophosphat .
 
Description:
Appearance : Yellowish odorless oil.
Melting point 0~5°C
Vapour pressure: 0.387Pa at 30°C. 
Molecular weight: 313.3125
Solubility, 39mg/L in water at 23°C; readily soluble in most organic solvents, e.g. in ethanol and toluene 30g/ml; in n-hexane 0.7g/ml; in acetone 0.1g/ml; in dichloromethane less than 0.1g/ml; in ethyl acetone 230.1g/ml at 20°C. 
5. STABILITY: Stable to light, hydrolyzed by aqueous acids and alkalis; decomposed at 200°C;
 
Toxicity       
Reviews FAO/WHO 68, 70 (see part 2 of the Bibliography).  Oral Acute oral LD50 for rats 57-59, dogs >320->500 mg/kg b.w. daily.  Skin and eye Acute dermal LD50 for rats >2000 mg/kg. No skin or eye irritation.  Inhalation LC50 (4 h) for rats: 0.531 mg/l air.  NOEL In 2 y feeding trials, rats receiving 1 mg/kg diet and dogs receiving 0.3 mg/kg diet were unaffected, except for inhibition of blood serum cholinesterase.  ADI (JMPR): 0.001 mg/kg b.w. [1993].  Toxicity class WHO (a.i.) Ib EC classification T; R23/25| Xn; R21| N; R50, R53
Application 
A broad spectruminsecticide and acaricide with some nematicidal properties. It controls Aphididae in cereals at 320-600 g AI (20% EC)/ha, in fruit at 75-125 g/100l. When incorporated at 1-2 kg AI (20% EC)/ha in the soil prior to planting, it controls Agrotis spp. and other cutworms. It can penetrate plant tissue, but has no systemic activity.