Indigo carmine

Indigo carmine

Chembox new
ImageFile = Indigotine.png ImageSize =
ImageFile1 = Indigo-carmine-3D-balls.png ImageSize1 =
IUPACName = A name could not be generated for this structure.
OtherNames = 5,5'-indigodisulfonic acid sodium salt
Section1 = Chembox Identifiers
CASNo = 860-22-0
PubChem =
SMILES =
Section2 = Chembox Properties
Formula = C16H8N2Na2O8S2
MolarMass = 466.36
Appearance = purple solid
Density =
MeltingPt = >300 °C
BoilingPt =
Solubility = 10 g/L (25 °C)
Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =

Indigo Carmine, or 5,5'-indigodisulfonic acid sodium salt, is a pH indicator with the chemical formula C16H8N2Na2O8S2.

Uses

The primary use of Indigo carmine is as a pH indicator. It is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction. It is also used as a dye in the manufacturing of capsules.

Health concerns

Indigo carmine is harmful to the respiratory tract if swallowed. It is also an irritant to the skin and eyes. Proper laboratory cautions (Lab coat, gloves, goggles) are advised.

ee also

*Indigo dye

Sources

*http://physchem.ox.ac.uk/MSDS/IN/indigo_carmine.html
*http://www.jtbaker.com/msds/englishhtml/i1440.htm


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • indigo carmine — noun 1. : a soluble blue dye that is the sodium salt of indigodisulfonic acid and is used chiefly as a biological stain and food color but is no longer used to any extent as a textile dye called also Indigotine IA 2. : a strong greenish blue that …   Useful english dictionary

  • indigo carmine — A blue dye used for measurement of kidney function and as a special stain for Negri bodies. SYN: sodium indigotin disulfonate. * * * indigo carmine n a soluble blue dye C16H8N2Na2O8S2 that is a sodium salt, is used chiefly as a biological stain… …   Medical dictionary

  • indigo carmine — indigokarminas statusas T sritis chemija apibrėžtis Indikatorius. formulė C₁₆H₈N₂Na₂O₈S₂ atitikmenys: angl. indigo carmine rus. индигокармин ryšiai: sinonimas – natrio 3,3ˊ diokso 2,2ˊ bisindoliden 5,5ˊ disulfonatas …   Chemijos terminų aiškinamasis žodynas

  • Indigo dye — chembox Name = Indigo ImageFile = Indian indigo dye lump.jpg ImageSize = 200px ImageName = Lump of Indian indigo dye ImageFile1 = Indigo.svg ImageSize1 = 200px ImageName1 = Indigo OtherNames = 2,2’ Bis(2,3 dihydro 3 oxoindolyliden), Indigotin… …   Wikipedia

  • carmine — Red coloring matter used as a histology stain produced from coccinellin derived from cochineal; treatment of coccinellin with alum forms an aluminum lake of carminic acid, the essential const …   Medical dictionary

  • indigo extract — noun 1. : indigodisulfonic acid 2. : indigo carmine …   Useful english dictionary

  • Colorante índigo — El texto que sigue es una traducción defectuosa o incompleta. Si quieres colaborar con Wikipedia, busca el artículo original y mejora o finaliza esta traducción. Puedes dar aviso al autor principal del artículo pegando el siguiente código en su… …   Wikipedia Español

  • Carmín de índigo — Nombre (IUPAC) sistemático …   Wikipedia Español

  • 2-Nitrobenzaldehyde — 2 Nitrobenzaldehyde[1][2] IUPA …   Wikipedia

  • Список пищевых добавок E100-E199 — Содержание 1 E100 E199 2 Источник 3 Литература 4 См. также E100 E199 …   Википедия

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”