| Identification | Back Directory | [Name]
ALIZARINE BLUE | [CAS]
568-02-5 | [Synonyms]
C.I.67410
Alizarin Blue
ALIZARINE BLUE
5,6-Dihydroxynaphtho[2,3-f]quinoline-7,12-dione
Naphtho[2,3-f]quinoline-7,12-dione, 5,6-dihydroxy- | [Molecular Formula]
C17H9NO4 | [MDL Number]
MFCD00228012 | [MOL File]
568-02-5.mol | [Molecular Weight]
291.26 |
| Chemical Properties | Back Directory | [Melting point ]
268-270° | [Boiling point ]
433.27°C (rough estimate) | [density ]
1.2442 (rough estimate) | [refractive index ]
1.4500 (estimate) | [pka]
3.17±0.20(Predicted) |
| Hazard Information | Back Directory | [Chemical Properties]
Violet crystals. Insoluble in water, soluble in glacial acetic acid and hot benzene. | [Uses]
As indicator in saturated alcoholic solution. pH: pink 0.0 to yellow 1.6; yellow 6.0 to green 7.6. | [Definition]
ChEBI: An organic heterotetracyclic compound that is naphtho[2,3-f]quinoline-7,12-dione carrying two additional hydroxy groups at positions 5 and 6. Used as an acid-base indicator. Between pH 0.0 and pH 1.6 it changes from pink to yellow, and between
pH 6.0 and pH 7.6 it changes from yellow to green. |
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