Basic information
CAS NO
482-89-3
EINECS
207-586-9
Molecular Formula
C16H10N2O2
Molecular Weight
262.2628
English Name
Indigo
Synonyms
C.I. 73000, C.I. Vat Blue 1, 2-(1,3-Dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one, 2,2'-Bis(2,3-dihydro-3-oxoindolylidene), Indigo blue, Vat Blue 1, 2,2'-biindole-3,3'(1H,1'H)-dione
Physical and Chemical Properties
Density
1.417g/cm3
Refractive index
1.709
Melting point
390-392℃ (dec.)
Boiling point
400.4°C at 760 mmHg
Flash point
158.2°C
Water Solubility
<0.1 g/100 mL
Vapour Pressure
1.27E-06mmHg at 25°C
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