Rice paddy field use herbicide Bispyribac-sodium
Specifications
Common name: Bispyribac-sodium (BSI, pa ISO)
Chemical name: Sodium 2, 6-bis [(4, 6-dimethoxy-2-pyrimidinyl) oxy] benzoate
CAS No: [125401-92-5] for sodium salt
Molecular Formula: C19H17N4NaO8; C19H18N4O8 for the acid
Specification: 95%TC, 20%WP; 10%SC, 20%SC, 40%SC, 80%WDG
Physical & Chemical Properties
1. Melting Point: 223-224°C
2. Vapour Pressure: 5.05×10-9 Pa (25°C)
3. Molecular weight: 452.35
4. Solubility: 73.3 g/L (25 °C) in water, 26.3 g/L in methanol, 0.043 g/L (25 °C) in acetone
Toxicity
Oral: Acute oral LD50 for male rats 4111, female rats 2635, male and female mice 3524 mg/kg.
Skin and eye: Acute percutaneous LD50 for rats >2000 mg/kg.
Non-irritating to skin; slightly irritating to eyes (rabbits).
Inhalation: LC50 (4 h) for rats >4.48 mg/l.
Application
Control of grasses, sedges and broad-leaved weeds, especially Echinochloa spp., in direct-seeded rice, at rates of 15-45 g/ha. Also used to stunt growth of weeds in non-crop situations.
| Common name |
Bispyribac-sodium 95% TC |
| CAS No |
125401-92-5 |
| Technical |
95% TC |
| Formulation |
60% WDG, 30% WP, 10% WP |
| Application |
Bispyribac-sodium is a broad-spectrum herbicide that controls annual and perennial grasses, broadleaf weeds and sedges. It has a wide window of application and can be used from the 1-7 leaf stages of Echinochloa spp; the recommended timing being the 3-4 leaf stage. The product is for foliar application. Flooding of the paddy field is recommended within 1-3 days of application. Following application, the weeds take approximately two weeks to die. Plants exhibit chlorosis and cessation of growth 3 to 5 days after application. This is followed by necrosis of terminal tissues. |
| Storage Stability |
Stable for 2 years after receipt of order if stored under recommended conditions. After 2 years, the compound should be re-analyzed for chemical purity before use. |
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