Protocatechualdehyde
- CAS NO. : 139-85-5
- CAT NO. : PH-API-9855
Physical State: Crystalline powder
Color/Appearance: Slightly brownish
Odor: Bitter almond odor (Medicinal fragrance type)
Melting Point: 150 - 157 °C (lit.)
Boiling Point: 213.5 °C (rough estimate)
Density: 1.2667 g/cm³ (rough estimate)
Refractive Index / Specific Rotation: 1.4600 (Refractive Index estimate)
pKa: 7.55 (at 25 °C)
Solubility: Soluble in water (6.3 g/L based on description; 50 g/L at 20 °C based on water solubility data)
Storage Conditions: Store sealed in a dry place below +30 °C (Air sensitive)
Molecular Formula: C₇H₆O₃
Molecular Weight: 138.12 g/mol
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