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Properties of substance:

indigo carmine



skc-file

Synonyms:

5,5’-indigodisulfonic acid disodium salt
indigotine
indigo soluble

Group of substances:

organic

Physical appearance:

deep blue powder

Empirical formula (Hill's system for organic substances):

C16H8N2Na2O8S2

Molar/atomic mass: 466.353

Melting point (°C):

250

CAS №: 860-22-0

Solubility (g/100 g of solvent):

benzene: insoluble [Ref.]
chloroform: insoluble [Ref.]
ethanol: sparingly soluble [Ref.]
water: 1 (25°C) [Ref.]

LD50 (mg/kg):

2000 (rats, oral)
93 (rats, intravenous)
2500 (mice, oral)
405 (mice, subcutaneous)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-320
  2. Dictionary of Food Compounds with CD-ROM. - 2nd ed. - CRC Press, 2013. - pp. 1082
  3. Gangolli S. The Dictionary of Substances and their Effects. - 2 ed., Vol. 4, E-J. - RSC, 1999. - pp. 748-749
  4. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 12ed., Vol. 1-5. - Wiley, 2012. - pp. 2130-2131
  5. Sabnis R.W. Handbook of Biological Dyes and Stains. - Wiley, 2010. - pp. 239-242
  6. The Merck Index 11th ed., Merck & Company, 1989. - pp. 784
  7. Краткая химическая энциклопедия. - Т. 2: Ж-Малоновый эфир. - М.: Советская энциклопедия, 1963. - pp. 243-244 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru