|
Produktnavn: |
3,4-Dihydroxybenzaldehyde |
|
CAS: |
139-85-5 |
|
MF: |
C7H6O3 |
|
MW: |
138.12 |
|
EINECS: |
205-377-7 |
|
Mol-fil: |
139-85-5.mol |
|
|
|
|
Melting point |
150-157 °C(lit.) |
|
Kokepunkt |
213,5 ° C (omtrentlig estimering) |
|
density |
1.2667 (rough estimate) |
|
brytningsindeks |
1.4600 (estimate) |
|
lagringstemperatur |
2-8°C |
|
solubility |
6,3 g / l |
|
pka |
pK (25°) 7.55 |
|
skjema |
Crystalline Powder |
|
color |
slightly brown |
|
Vannløselighet |
50 g / l (20 ºC) |
|
Følsom |
Luftfølsom |
|
Merck |
14,7893 |
|
BRN |
774381 |
|
Stabilitet: |
Stabil. Uforenlig med sterke baser, sterke oksidasjonsmidler. |
|
CAS DataBase Reference |
139-85-5(CAS DataBase Reference) |
|
NIST Chemistry Reference |
3,4-dihydroksybenzaldehyd (139-85-5) |
|
EPA Substance Registry System |
Benzaldehyde, 3,4-dihydroxy- (139-85-5) |
|
Farekoder |
Xi |
|
Risk Statements |
36/37/38-22 |
|
Safety Statements |
26-36-37 / 39 |
|
WGK Germany |
3 |
|
RTECS |
UL0380000 |
|
F |
9 |
|
Hazard Note |
Irriterende / luftfølsom |
|
HS Code |
29124900 |
|
Chemical Properties |
brunt pulver |
|
Rensingsmetoder |
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.] |
|
Forberedelsesprodukter |
4'-FORMYLBENZO-15-CROWN 5-ETHER -> 3- (3,4-DIHYDROXYPHENYL) PROPIONICACID -> 3 ', 4' - (DIOCTYLOXY) BENZALDEHYDE -> 3 ', 4' - (DIDECYLOXY) BENZALDEHYDE -> 3,4-DIHYDRO-2H-1,5-BENZODIOXEPINE-7-CARBALDEHYDE |
|
Raw materials |
Fosforpentaklorid |
