indigo powder CAS No.482-89-3 / Cat No.EBD28703
Indigo
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
2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one
indigo powder
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
Properties
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Appearance:
dark violet powder
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Density:
1.01 g/mL at 20 °C
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Melting point:
>300 °C(lit.)
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Boiling point:
400.4 °C at 760 mmHg
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Flashing point:
>220 °C
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Solubility:
<0.1 g/100 mL
Safety Information
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Symbol:
-
Signal words:
Warning -
Hazard statements:
H373 Causes damage to organs through prolonged or repeated exposure.
NMR Spectrum
1H NMR
13C NMR
