Indigo

• Formula: C₁₆H₁₀N₂O₂
• Molecular weight: 262.2628
• IUPAC Standard InChI: InChI=1S/C16H10N2O2/c19-15-9-5-1-3-7-11(9)17-13(15)14-16(20)10-6-2-4-8-12(10)18-14/h1-8,17-18H/b14-13+ Copy

  
• IUPAC Standard InChIKey: COHYTHOBJLSHDF-BUHFOSPRSA-N Copy
• CAS Registry Number: 482-89-3
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: Indigotin; CI 73000; 3H-Indol-3-one, 2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-; Δ2,2'-Bipseudoindoxyl; (Δ2,2'(3H,3'H)-Biindole)-3,3'-dione; (Δ2,2'-Biindoline)-3,3'-dione; Blue No. 201; C.I. Vat Blue 1; C.I. 73000; Cystoceva; D and C Blue No. 6; D and C Blue Number 6; D+C Blue No. 6; D&C Blue No.6; D&C Blue 6; Diindogen; Indigo Blue; Indigo Ciba; Indigo Ciba SL; Indigo J; Indigo N; Indigo NAC; Indigo NACCO; Indigo P; Indigo Powder W; Indigo Pure BASF; Indigo Pure BASF Powder K; Indigo PLN; Indigo Synthetic; Indigo VS; Lithosol Deep Blue B; Mitsui Indigo Paste; Mitsui Indigo Pure; Monolite Fast Navy Blue BV; Pigment Blue 66; Synthetic Indigo; Synthetic Indigo TS; Vat Blue 1; Vulcafix Blue R; Vulcafor Blue A; Vulcanosine Dark Blue L; Vulcol Fast Blue GL; Vynamon Blue A; 11669 Blue; (2,2'-Biindoline)-3,3'-dione; Lithosol deep blue V; Modr kypova 1; NCI-C61392; 2-(1,3-Dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one; C.I. pigment blue 66; D & C blue No 6; Indigotine; Indigotin (natural); Pigment Indigo; 2-(1,3-Dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-3H-indol-3-one (C.I. Vat Blue 1)
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • IR Spectrum
  • Mass spectrum (electron ionization)
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Nishida, Ando, et al., 2008
Nishida, K.; Ando, Y.; Sunagawa, S.; Ogihara, A.; Tanaka, I.; Koukitsu, A., Vapour Pressures and Heats of Sublimation of Some Vat Dyes, J Food Science, 2008, 102, 1, 18-20, https://doi.org/10.1111/j.1478-4408.1986.tb01039.x . [all data]

Notes

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• Symbols used in this document:
  

  ΔsubH

  Enthalpy of sublimation

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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