Common name: Propargite
Chemical name:
Chemical class: Acaricide
Molecular formula: C, H,O,S
CAS NO.: 2312-35-8
Properties:
Form Brownish-yellow, oily viscous liquid (tech.). B.p. decomp. 210°C (atmospheric pressure) without boiling. V.p. 0.04 mPa (25°C). KOW logP=5.70. Henry 6.4×10⁻² Pa m³ mol⁻¹ (calc.). S.g./density 1.12 (20°C). Solubility In water 0.215 mg/l (25°C). Fully miscible with hexane, toluene, dichloromethane, methanol and acetone.
Stability Hydrolysis DT50 66.3 (25°C), 9.0 (40°C) (both days, pH7). DT50 1.1 (25°C), 0.2 (40°C) (both days, pH9). Stable at pH 4. Photolysis DT50 c.6 d (pH 5). Half-life in atmosphere 2.155 h (Atkinson calculation). pKa>12. F.p. 71.4°C (Pensky-Martens closed cup).
Mode of action:
Non-systemic acaricide with predominantly contact action; some additional action by inhalation.
Usage:
Control of phytophagous mites (particularly motile stages) on a variety of crops, including vines, fruit trees (e.g. top fruit, stone fruit, citrus fruit), hops, nuts, tomatoes, vegetables, ornamentals, cotton, maize, peanuts, and sorghum. Used at rates from 0.75-1.8 kg/ha on row crops and foliar sprays of 0.85-3.0 kg/ha on perennial fruit and nut crops.
Normal Formulations:
90% TC. 57%/73% EC
