
Gibberellic acid (CAS 77-06-5), with the molecular formula C19H22O6, is a white crystalline powder. It is stable at room temperature, slightly soluble in water, and readily soluble in organic solvents such as alcohols and acetone. It exhibits weak acidity and possesses significant biological activity. It is primarily used as a plant growth regulator, an agricultural yield enhancer, a reagent in biological research, and a raw material in the fermentation industry.
| Item | Specification |
| Melting Point | 227°C(lit.) |
| Boiling Point | N/A |
| Density | 1.34 g/cm³(20℃) |
| Flash Point | N/A |
| Vapor Pressure | N/A |
| Refractive Index | 81°(C=2,MeOH) |
| Water Solubility | 5 g/L(20℃ |
| Specific rotation | [α] 20/D +80±3° |
| Acidity constant (pKa) | 4.0 (25°C) |
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