Phthalocyanine Green G

Chemical structure of one of the components of Phthalocyanine Green G

Names
Other names

Phthalo green, viridian hue, pigment green 7, copper phthalocyanine green, C.I. pigment green 7, non-flocculating green G, polychloro copper phthalocyanine, and C.I. 74260, copper hexadecachlorophthalocyanine

Identifiers

CAS Number

* 1328-53-6

3D model (JSmol)

* Interactive image

ChemSpider |

* 21781844

EC Number |

* 238-897-8

PubChem CID

* 26932

UNII |

* BPO9294G4W

InChI

* InChI=1S/C32Cl16N8.Cu/c33-9-1-2(10(34)18(42)17(9)41)26-49-25(1)53-27-3-4(12(36)20(44)19(43)11(3)35)29(50-27)55-31-7-8(16(40)24(48)23(47)15(7)39)32(52-31)56-30-6-5(28(51-30)54-26)13(37)21(45)22(46)14(6)38;/q-2;+2

Key: ABFKYPFPQRDCGM-UHFFFAOYSA-N

SMILES

* C12=C(C(=C(C(=C1Cl)Cl)Cl)Cl)C3=NC4=NC(=NC5=C6C(=C([N-]5)N=C7C8=C(C(=C(C(=C8Cl)Cl)Cl)Cl)C(=N7)N=C2[N-]3)C(=C(C(=C6Cl)Cl)Cl)Cl)C9=C4C(=C(C(=C9Cl)Cl)Cl)Cl.[Cu+2]

Properties

Chemical formula

| C32Cl16CuN8
Molar mass | 1127.15 g·mol−1
Appearance  | Green solid

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Tracking categories (test):

* SizeSet

Phthalo green

Phthalocyanine green pigment

Colour coordinates
Hex triplet| #123524
Source| The Mother of All HTML Colo(u)r Charts
ISCC–NBS descriptor| Very dark yellowish green

Phthalocyanine green G, which has many commercial names, is a synthetic green pigment from the group of phthalocyanine dyes, a complex of copper(II) with chlorinated phthalocyanine. It is a soft green powder, which is insoluble in water.[1] It is a bright, high intensity colour used in oil and acrylic based artist's paints, and in other applications.

## Contents

* 1 Synthesis, properties, and production
* 2 Uses
* 3 Related compounds
* 4 See also
* 5 References

## Synthesis, properties, and production

Phthalocyanine green is derived from phthalocyanine blue by chlorination in the presence of aluminium trichloride. The stoichiometry for the complete chlorination is shown:[1]

Cu(C32H16N8) + 16 Cl2 → Cu(C32N8Cl16) + 16 HCl

In practice, this pigment is a mixture of isomers and degrees of chlorination. The 15th and 16th chlorides are difficult to install. The chemical formula usually ranges from C32H3Cl13CuN8 to C32HCl15CuN8.

Due to the presence of strongly electronegative chlorine substituents, the absorption spectrum is shifted from that of the parent copper phthalocyanine. Phthalo green is highly stable and resistant to alkali, acids, solvents, heat, and ultraviolet radiation.

## Uses

Due to its stability, phthalo green is used in inks, oil paint, coatings, and many plastics. In application it is transparent. Being insoluble, it has no tendency to migrate in the material. It is a standard pigment used in printing ink and packaging industry. It is also allowed in all cosmetics except those used around the eyes.[where?] It is used in some tattoos.

## Related compounds

Copper phthalocyanine green 36 is a variant where some of the chlorine atoms are replaced with bromine. Bromination is less efficient than chlorination. Consequently the degree of bromination is lower.[1][2]

## See also

* The Joy of Painting \- oil paint based on the pigment was frequently used on the show.
* Copper phthalocyanine (blue)
* Lists of colors

## References

1. ↑ 1.0 1.1 1.2 Löbbert, Gerd (2000). "Phthalocyanines". Ullmann’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_213. ISBN 3527306730. .
2. ↑ Phthalo Green: How Can You Tell If It's Always the Same? 1/7/2003 , Dr. Richard M. Podhajny, Ph.D. , pffc-online.com

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Shades of green

| Apple green| Aquamarine| Asparagus| Avocado| Bright green| British racing green| Brunswick green| Cal Poly green| Castleton green| Celadon

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Chartreuse| Cyan| Dark green| Dark moss green| Dark pastel green| Dark spring green| Dartmouth green| Emerald| Erin| Feldgrau
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Fern green| Forest green| Green| Green-yellow| Harlequin| Honeydew| Hooker's green| Hunter green| India green| Islamic green
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Jade green| Jungle green| Kelly green| Lawn green| Light green| Lime| Lime green| Malachite| Mantis| Midnight green
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Mindaro| Mint| Moss green| Myrtle green| Neon green| Office green| Olive| Olivine| Pakistan green| Paris green
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Pear| Persian green| Phthalo green| Pigment green| Pine green| Pistachio| Reseda green| Robin egg blue| Sage| Screamin' green
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Sea green| SGBUS green| Shamrock green| Spring bud| Spring green| Tea green| Teal| Turquoise| Viridian| Yellow-green
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A typical sample is shown for each name; a range of color-variations is commonly associated with each color-name.

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Shades of black

| Bistre| Black| Black bean| Black olive| Café noir| Charcoal| Dark purple| Ebony| Eerie black| Eigengrau

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Jet| Licorice| Midnight blue| Night| Onyx| Outer space| Oxford blue| Raisin black| Russian violet| Smoky black
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A typical sample is shown for each name; a range of color-variations is commonly associated with each color-name.

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