bispyribac-sodium herbicide

CAS No: [125401 75-4] for acid; [125401 92 5] for sodium salt

MF: C19H17N4NaO8; C19H18N4O8 for the acid

MW: 452.4

MP.: 223-224℃

VP.: 5.05 × 10-6 mPa (25℃)

SG.: Bulk density 0.0737 (20℃, CIPAC MT 3)

Formulation types: 95% TC，20% WP, 10% SC, 40% SC

Solubility.:In water 73.3 g/l (25 ℃). In methanol 26.3, acetone 0.043 g/l (25℃).

Stability: Stable in water: DT50 >1 y (pH 7 & 9), 448 h (pH 4). Stable to light. Not decomposed after 14 d at 55℃.

Appearance: Form White powder.

Toxicological information:

Oral: Acute oral LD50 for male rats 4111, female rats 2653 mg/kg.

Skin and eye: Acute percutaneous LD50 for rats >2000 mg/kg. Non-irritating to skin; slightly irritating to eyes (rabbits).

Purpose:

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.