Metamitron

[Molecular Formula] C₁₀H₁₀N₄O

[CIPAC No.] 381

[Chemical Name] 3-Methyl-4-amino-6-phenyl-1,2,4-triazin-5(4H)-one

[CAS RN.] 41394-05-2

[Structural Formula]

　　

　　

[Molecular Weight] 202.2

[Use] It is photosynthesis inhibitor mainly used for the control of night shade, chickweed, annual meadowgrass, amur foxtail etc; suitable for sugar-purpose beet and feed beet. Half life is 3 months. Use level: 3.5-5.0kg/(a.i.)/hm2.

[Properties] Pure product is light yellow crystal, TC is light yellow solid, m.p.: 166.9°C, vapor tension: (20°C)8.6×10-4pa, relative density: 1.35(22.5°C), solubility (25°C) in water: 1.7mg/L, easily soluble in methanol and methylene dichloride.

[Toxicity] Rat acute per os LD50>1200mg/kg, mouse LD50>650mg/kg, rat acute percutaneous LD50>4000mg/kg.

[Spec.]

Item Preparation	Assay	Water	Insol. in acetone	PH-value	Emulsion stability(dilution 200 times)
98% Metamitron TC	≥98.0%	≤0.3%	≤0.1%	6.0-8.0	-
70% Metamitron WP	≥70.0%	≤0.5%	-	6.0-8.0	Qualified

[Packing] 70% WP: upon users's request.