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Polyaniline (emeraldine base)

average Mw ~10,000

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Emeraldine base polyaniline
CAS Number:
MDL number:
PubChem Substance ID:

mol wt

average Mw ~10,000

Quality Level


m-cresol: soluble
DMAC: soluble
DMF: soluble
DMSO: soluble
NMP: soluble



InChI key


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This Item

m-cresol: soluble


m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble


m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble


m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble

Quality Level


Quality Level


Quality Level


Quality Level


General description

Polyaniline (PAni) emeraldine salt can be prepared by protonation of PAni emeraldine base (PAni-EB). PAni-EB forms at pH>7. It′s mechanism against corrosive agents has been explained in a study.
Polyaniline (emeraldine base) (PANI) is an intrinsic conductive polymer which consists of a ring structure attached with nitrogen substituted derivatives. It has an emeraldine type of oxidation state that exists in the form of its base. It exhibits high corrosion resistance and can be used in the development of electrochemical devices.


Polyaniline (PANI) forms a conjugating system that can be used for a variety of semiconducting applications. It is also widely used as protective coatings and hole transporting layers (HTLs) for organic electronics and chemical sensing.
The polymer acts as an anticorrosive additive. Epoxy paints may be modified using PAni-EB.

Features and Benefits

Undoped form of conducting polymer (non-conductive).

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Study of epoxy and alkyd coatings modified with emeraldine base form of polyaniline.
Armelin E, et al.
Progress in Organic Coatings, 58(4), 316-322 (2007)
Corrosion protection of iron/steel by emeraldine base polyaniline: an X-ray photoelectron spectroscopy study.
Fahlman M, et al.
Synthetic Metals, 85(1-3), 1323-1326 (1997)
Anticorrosion performances of epoxy coatings modified with polyaniline: A comparison between the emeraldine base and salt forms
Armelin E, et al.
Progress in Organic Coatings, 65(1), 88-93 (2009)
Suitability of emeraldine base polyaniline-PVA composite film for carbon dioxide sensing.
Irimia-Vladu M and Fergus JW
Synthetic Metals, 156(21-24), 1401-1407 (2006)
Application of polyaniline (emeraldine base, EB) in polymer light-emitting devices.
Wang HL, et al.
Synthetic Metals, 78(1), 33-37 (1996)


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