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Product detail:
Paclobutrazol 15% WP plant growth regulator
1. Basic Information of paclobutrazol
| Product name | Paclobutrazol
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| CAS NO. | 76738-62-0
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| Chemical name | (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol; Bonzi; (2RS,3RS)-1(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol; (2RS,3RS)-1-(4-chloro phenyl)-4,4-methyl-2-(1H-1,2,4-triazol-1-yl)-E-3-ol.
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| Classification | Plant growth regulator/ Agrochemical |
Formulation | 95% TC / 30% /15% WP 48% 25% SC |
| Physical and chemical properties | 1.The pure product is a white crystalline solid; relative density is 1.22; the melting point was 165 ~ 166 °C; vapor pressure (20 °C) is 1 × l0-6Pa, 20 °C for 0.1Pa, (30 °C) is 8 × 10-6Pa. 20 °C 2. Solubility: acetone 110g/L, 150g/L of methanol, hexane dichloromethane 100g/L, 10g/L, 180g/L xylene cyclohexanone, 60g/L, water 35mg/L. The distribution coefficient (octanol / water) 1590. 3. The pure product at 50 °C stable within 6 months. On the UV stable. Stable water solution of more than 30d at room temperature.
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| Toxicity | Paclobutrazol is a kind of low toxicity plant growth regulator.
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2. Specifications:
Table 1. Chemical Analysis of Paclobutrazol 15% wp
| Item | Standard |
| Content | 15% min. |
| Calcium Carbonate | 76% max. |
| White Carbon Black | 4% max |
| Dispersant | 4% max. |
| Moisture | 1% max |
| Solute Time | 90 max |
| PH | 6.0-10.0 |
| Particle Size (Through 44 mesh) m/m | 98min |
Table 2. Chemical Analysis of Paclobutrazol 95% TC
| Item | Standard |
| Content | 95% min |
| Loss on drying | 0.1% max |
| Acidity | 0.3% max |
| Insoluble in acetone | 0.3% max |
3. Mode of Actions:
| Mode of actions |
| 1). Inhibits the stem growth and breaks the apical dominance(can inhibit the generation of Gibberellic acid); |
| 2). Inhibits the internodal elongation, resists to lodging; |
| 3). Improves the abilities of stress tolerance |
| 4). Promotes the lateral bud growth |
| 5). Enhances or inhibits the photosynthesis, depends on the concentration |
| 6). Improves the respiration intensity of root, slows down the respiration of aboveground parts of crops. |
4. Applications of paclobutrazol 15% wp
| Crops | Processing period | Concentration | Effects |
| Rice | Before the period of one-leaf seeding bed | 300mg/L | Plant elongation are slowed, the length of stems are controled and tillers are promoted, resist lodging, the yield of rice is improved.
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