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Product Name: |
3,4-Dihydroxybenzaldehyde |
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CAS: |
139-85-5 |
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MF: |
C7H6O3 |
|
MW: |
138.12 |
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EINECS: |
205-377-7 |
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Mol File: |
139-85-5.mol |
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Melting point |
150-157 °C(lit.) |
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Boiling point |
213.5°C (rough estimate) |
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density |
1.2667 (rough estimate) |
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refractive index |
1.4600 (estimate) |
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storage temp. |
2-8°C |
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solubility |
6.3g/l |
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pka |
pK (25°) 7.55 |
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form |
Crystalline Powder |
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color |
slightly brown |
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Water Solubility |
50 g/L (20 ºC) |
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Sensitive |
Air Sensitive |
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Merck |
14,7893 |
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BRN |
774381 |
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Stability: |
Stable. Incompatible with strong bases, strong oxidizing agents. |
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CAS DataBase Reference |
139-85-5(CAS DataBase Reference) |
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NIST Chemistry Reference |
3,4-Dihydroxybenzaldehyde(139-85-5) |
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EPA Substance Registry System |
Benzaldehyde, 3,4-dihydroxy- (139-85-5) |
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Hazard Codes |
Xi |
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Risk Statements |
36/37/38-22 |
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Safety Statements |
26-36-37/39 |
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WGK Germany |
3 |
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RTECS |
UL0380000 |
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F |
9 |
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Hazard Note |
Irritant/Air Sensitive |
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HS Code |
29124900 |
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Chemical Properties |
brown powder |
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Purification Methods |
Crystallise the aldehyde from water or toluene and dry it in a vacuum desiccator over KOH pellets or shredded wax respectively. [Beilstein 8 IV 1762.] |
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Preparation Products |
4'-FORMYLBENZO-15-CROWN 5-ETHER-->3-(3,4-DIHYDROXYPHENYL)PROPIONIC ACID-->3',4'-(DIOCTYLOXY)BENZALDEHYDE-->3',4'-(DIDECYLOXY)BENZALDEHYDE-->3,4-DIHYDRO-2H-1,5-BENZODIOXEPINE-7-CARBALDEHYDE |
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Raw materials |
Phosphorus pentachloride |
