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Properties of substance:

indigo carmine

Synonyms:

5,5-indigodisulfonic acid disodium salt

Physical appearance:

deep blue powder

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

C16H8N2Na2O8S2

Molar/atomic mass: 466.353

Melting point (°C):

250

Solubility (g/100 g of solvent):

water: soluble [Ref.]
ethanol: sparingly soluble [Ref.]

    References:

    1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-320
    2. Sabnis R.W. Handbook of Biological Dyes and Stains. - Wiley, 2010. - pp. 239-242
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru