Flumetralin: Chemical properties, Uses, and Toxicity
Oct 12,2019
Flumetralin is a yellow or orange crystalline solid. M.p. : 101-103 ° C, relative density: 1.55 (20 ° C), vapor pressure: <1.33 × 10-3 Pa) (20° C), volatility <0.01 mg / m3. Solubility at room temperature: dichloromethane > 80%, methanol 25%, benzene 55%, hexane 1.3%, water < 0.1 mg / L. Decomposed: >250 ° C
Uses
Flumetralin is a contact and local systemic tobacco side bud inhibitor with high-efficiency. It is used for flue-cured tobacco, sun-cured tobacco and cigar. The one-time application of flumetralin after the topping of tobacco can inhibit the occurrence of tobacco axillary buds. The amount used for each application is 22.5~26.3g with active ingredient of /100m2. It is fast absorbed and has immediate effect. Flumetralin is used as a regulator for plant growth, and a tobacco-specific bud inhibitor. It starts going effective after 2h of application if no rain. It not only makes the natural maturity of tobacco leaves consistent, but also improves the quality of tobacco leaves and alleviates the contact infection of field mosaic disease.
Synthesis
Toxicity
Acute oral LD50: >5000mg/kg (rat). Acute dermal LD50 :> 2000mg/kg(rabbit). Acute inhalation LC50: >21.3mg/L (rat). Irritating to skin and eyes. It has no teratogenic and mutagenic effects. LC50 in rainbow trout: >3.2μg/L (48h), LC50 in leech>2.8μg/L. Acute oral LD50:>2000mg/kg(quail). Acute oral LD50 LD50: >2000mg/kg (wild duck). Acute oral LD50: 0.075~5μg per bee. No toxic effects were found.
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Oct 12,2019Organometallic compoundsFlumetralin
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