Organic Pigments
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Carmine
(
Pubchem
)
Cochineal from
Dactylopius coccus
Alizarin, Rose Madder
(
Pubchem
)
Alizarin Lake (with DMF)
Al
2
O
2
(C
14
H
6
O
4
)
4
Ca
2
(HCON(CH
3
)
2
)
4
(H
2
O)
2
Purpurin, Madder Root
(
Pubchem
)
Purpurin Lake (with DMF)
Al
2
O
2
(C
14
H
6
O
5
)
4
Ca
2
(HCON(CH
3
)
2
)
2
(H
2
O)
4
Eosin B
(
Pubchem
)
Indigo
(
Pubchem
)
Palygorskite clay (with disordered water)
Maya blue
(
clay with disordered indigo
)
Tyrian Purple, 6,6-Dibromoindigo
(
Pubchem
)
Euxanthic acid, Indian Yellow
(
Pubchem
)
Gambogic acid
(
Pubchem
)
Brazilin
(
Pubchem
)
Copper Phthalocyanine Blue
(
Pubchem
)
Copper Phthalocyanine Green
Quinacridone Red
(
Pubchem
)
Electrostatic potential
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Element Labels:
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Surface (dots on black background)
Color by electrostatic potential
p
-orbitals (for π bonding)
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This page created by George Lisensky, Beloit College.
Last modified October 10, 2025.
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