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476706

Sigma-Aldrich

Polyaniline (emeraldine base)

average Mw ~10,000

Synonym(s):

Emeraldine base polyaniline

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About This Item

CAS Number:
25233-30-1
MDL number:
MFCD00241446
UNSPSC Code:
12352103
PubChem Substance ID:
24871293
NACRES:
NA.23

mol wt

average Mw ~10,000

Quality Level

100

solubility

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

SMILES string

Brc1nn[nH]c1C.Cl

InChI

1S/C3H4BrN3.ClH/c1-2-3(4)6-7-5-2;/h1H3,(H,5,6,7);1H

InChI key

LYCWKZFKTMHXQA-UHFFFAOYSA-N

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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.

Application

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

476706-10G:
476706-50G:
476706-VAR:
476706-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ6539
MKCK7650
MKCD8637
MKBJ4972V
MKBJ4970V

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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)
Emeraldine Base Polyaniline as an Alternative to Poly(3,4-ethylenedioxythiophene) as a Hole-Transporting Layer
Higgins RWT, et al.
Advances in Functional Materials, 11(6), 407-402 (2001)
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)
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Global Trade Item Number

SKUGTIN
476706-10G4061833598702
476706-50G4061833482865

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