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Ponceau 3R

Ponceau 3R
Image illustrative de l’article Ponceau 3R
Structure du Ponceau 3R
Identification
Nom UICPA
Synonymes

C.I. 16155

No CAS
No ECHA 100.020.580
Propriétés chimiques
Formule C19H16N2Na2O7S2  [Isomères]
Masse molaire[1] 494,449 ± 0,029 g/mol
C 46,15 %, H 3,26 %, N 5,67 %, Na 9,3 %, O 22,65 %, S 12,97 %,
pKa environ 4

Unités du SI et CNTP, sauf indication contraire.

Le ponceau 3R, ou C.I. 16155, est un colorant azoïque rouge. Le ponceau 3R est un colorant organique synthétique.


Références

[modifier | modifier le code]
  1. Masse molaire calculée d’après « Atomic weights of the elements 2007 », sur www.chem.qmul.ac.uk.


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Ponceau 3R
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