Product Description: Probenazole (Allylbenzothiazole) 8% Granules (GR)

1. Product Performance

• Key advantages: Long residual activity (3–4 weeks), low resistance risk, safe to crops and environment, ideal for rice nursery and field application.
• Target diseases: Rice blast (seedling, leaf, neck blast), rice bacterial leaf blight; vegetable bacterial diseases (lettuce bacterial rot, cabbage black rot, Chinese cabbage soft rot, cucumber leaf spot).

2. Packaging Description

• Formulation: 8% Granules (GR)
• Standard packaging:
  • Small packs: 500g, 1kg moisture-proof laminated bags
  • Bulk packs: 10kg, 25kg woven bags with inner plastic liners
  
  
• Labeling: Clear product name, active ingredient (Probenazole 8%), CAS No. (27605-76-1), net weight, batch number, shelf life, registration number, safety warnings, and application instructions.
• Storage: Keep in cool, dry, ventilated place; avoid direct sunlight, high temperature, and moisture; store away from food, feed, and children.

3. Product Specifications

• Active ingredient: Probenazole (Allylbenzothiazole)
• Content: 8% (w/w)
• Formulation: Granules (GR)
• CAS No.: 27605-76-1
• Molecular formula: C₁₀H₉NO₃S
• Molecular weight: 223.25
• Appearance: Off-white to light brown free-flowing granules
• Melting point: 138–139°C
• Solubility: Slightly soluble in water (≈150 mg/L at 20°C); soluble in organic solvents
• Toxicity:
  • Acute oral LD₅₀ (rat): 2,030 mg/kg (moderately toxic)
  • Acute dermal LD₅₀ (rat): >5,000 mg/kg (low toxicity)
  
  
• Quality standard: Complies with GB/industry standards for granule uniformity, stability, and fineness.

4. Application Methods & Target Crops

Target Crops & Diseases

Application Rate & Method (Broadcast Application)

Rice

• Nursery tray (seedling blast): 150–300 g per m² (12–24 g/m² a.i.), apply evenly on soil surface before sowing or at 1–2 leaf stage.
• Field (leaf blast): 1,666–3,333 g/mu (25–50 kg/ha), apply at initial disease stage; repeat every 7–10 days if needed.
• Field (neck blast): Apply at 3–4 weeks before heading (critical stage); one application provides 3–4 weeks protection.
• a.i. rate: 2.4–3.2 kg/ha (160–213 g/mu).

Vegetables (Bacterial Diseases)

• Rate: 2.4–3.2 kg a.i./ha (broadcast or soil incorporation before planting).

Key Application Notes

• Do not mix with strongly alkaline pesticides.
• Rainfastness: Stable after 4–6 hours of application; reapply if heavy rain occurs within 4 hours.
• Pre-harvest interval (PHI): 21 days for rice; max 2 applications per season.
• Avoid application on windy or rainy days to ensure uniform distribution.