Metasystox benzophenone is an organic compound with the chemical formula of c6h15o3ps2. This substance is a colorless to yellowish oily liquid, quasi insoluble in water. The O in the name means that the ethyl sulfonyl ethane chain is connected to the dimethyl thiophosphate group through an oxygen atom.

Metasystox anisole is used as insecticide and acaricide. It is often combined with demon n - s - methyl, which is simply called demon n - methyl. The trade name of this substance is methyl systox.

This material decomposes during heating and combustion, producing toxic gases including phosphorus oxides and sulfur oxides.

This substance may affect the nervous system and cause the inhibition of cholinesterase.

Metasystox-R is a systemic soluble liquid insecticide used to control brassica vegetable crops, cotton and lupine aphids. It may enter the marine environment and be harmful to marine organisms and nitrification process. The effect of Metasystox-R on ammonia oxidation activity of marine nitrosamonas was studied by determining nitrification inhibitors in cell suspension. The results show that 8 μ Metasystox-R with g mL (- 1) PI50=4.48 significantly inhibited the production of nitrite by marine nitrosamonas, suggesting that marine nitrosamonas may be one of the target bacteria that inhibit and reduce nitrification in the marine environment.

The acute oral toxicity and skin toxicity of methadone are high (oral LD50 48 mg/kg, skin LD50 112 mg/kg in rats). Hydroxymethyl ketone methyl has slight irritation to the eyes of rabbits and is not sensitive to the skin of guinea pigs. This product is a Metasystox R system insecticide, containing 25% hydroxymethoxymethyl, with moderate acute oral and skin toxicity. The product is slightly irritating to rabbit skin and moderately irritating to eyes, which may cause skin allergy.

The results of the residue test of Brussels sprouts, cabbage, cauliflower, cotton and coumarin in Australia allowed the establishment of maximum residue limits of oxydesone methyl for Brassica vegetable crops, Brassica oleracea and Brassica oleracea, cottonseed, cottonseed oil (crude oil) and coumarin (dry). Overseas cotton data also support the proposed maximum residue limits for cottonseed and cottonseed oil. The MRLs for eggs, edible offal (mammals), meat (mammals), milk, edible poultry offal and meat, and cotton and dewhide were also determined. When Metasystox R system insecticide is used to control aphids according to the recommended use mode, it is not expected to exceed the recommended maximum residue limit.

NOHSC has carried out risk assessment on the insecticide of Metasystox R system, which contains 250g/L of oxydione methyl as emulsion concentrate, and is used for brassica vegetable crops, cotton and lupins crops. When handled according to the control measures indicated in this assessment, workers can safely use the Metasystox R system insecticide.

Methoxymethadone is not currently on the list of hazardous substances designated by the National Occupational Health and Safety Commission (NOHSC). Bayer Australia Co., Ltd. identified oxymethadone methyl as a dangerous substance according to its acute toxicity. Bayer Australia Limited also identified the pesticide of Metasystox R system as a hazardous substance according to the NOHSC standard (acute toxicity). The product will be prepared in Australia from imported technical grade manufacturing concentrate, containing 50% oxymethadone and 50% monochlorobenzol. Monochlorobenzene is on the list of hazardous substances designated by the National Health Commission. Australian workers may be exposed to production concentrates and end use products (EUPs) during formulation and packaging. Workers involved in transportation, storage and retail will only be exposed if the packaging is damaged. Engineering control, biological monitoring and training to protect production and maintenance personnel are the responsibility of the manufacturer.

The data provided by Bayer Australia Limited supports the statement that Metasystox R system insecticide can effectively control aphids in rape vegetable crops, cotton and lupine beans. These data were collected from a series of repeated and unreplicated experiments.

When used according to the label instructions, these data are sufficient to satisfactorily evaluate the efficacy. No phytotoxicity of metasystox R system insecticides to Brassica vegetable crops, cotton or lupin was observed in all tests.