Old Holland Classic Oil Color - , 225 ml tube

Item #:02131-7195
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Sap Green Lake Extra
Sap Green Lake Extra

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Product Details

Color:
Sap Green Lake Extra
Size:
225 ml
No.
292

Pigment Information

This color contains the following pigments:

PBk7-Lamp Black

PG7-Phthalo Green

PY95-Disazo Condensation Yellow


Pigment Name

PBk7-Lamp Black

Pigment Type

inorganic

Chemical Name

carbon

Chemical Formula

C

Properties

Lamp black is a very opaque, heavily staining black pigment that does not have much covering or tinting power. It is typically the most opaque black in watercolor form. Though a very pure black, it tends to muddy slightly in mixtures. Natural sources may be brownish or bluish in tone because of impurities. When used in oil paints, it is one of the slowest drying pigments, and should not be used in underpainting or applied in layers underneath other colors.

Permanence

Lamp Black is very lightfast and absolutely permanent. It is used in all techniques in permanent painting.

Toxicity

Carbon itself is not considered hazardous, however other combustion products that are hazardous are often present as impurities when Lamp Black is produced from natural materials. For this reason, commercial preparations of the pigment should be considere

History

Lamp Black is a carbon based black traditionally produced by collecting soot (known as lampblack) from oil lamps. It has been used as a pigment since prehistoric times. It is the black found in Egyptian murals and tomb decorations and was the most popular black for fresco painting until the development of Mars Black.


Pigment Name

PG7-Phthalo Green

Pigment Type

organic

Chemical Name

polychlorinated copper(II) phthalocyanine

Chemical Formula

C32H3Cl13CuN8 to C32HCl15CuN8 or C32H16CuN8Cl15 (PG7) or C32Br6Cl10CuN8 (PG36)

Properties

Phthalo Green is a transparent, cool, bright, high intensity color used in oil and acrylics. It comes from a Phthalocyanine Blue pigment where most of the hydrogen atoms have been replaced with chlorine, forming highly stable molecules.  It has similar pigment properties and permanence to Phthalo Blue. It is slow drying and an excellent base color for mixing a range of bright greens. Phthalo Green is considered a very good alternative to Viridian because it is intense and mixes well and can be used to emphasize mineral colors in various tints. However, its tinting strength is very high, so it can overpower other colors.  This pigment most closely resembles the discontinued and toxic Verdigris.

Permanence

Phthalo Greens are completely lightfast and resistant to alkali, acids, solvents, heat, and ultraviolet radiation. They are currently used in inks, coatings, and many plastics due to their stability and are considered a standard pigment in printing ink and the packaging industry.

Toxicity

Phthalo Green has no significant hazards, but it contained PCBs (polychlorinated biphenyls) until 1982.

History

This bright blue-green was developed in 1935 and has been in use since 1938.


Pigment Name

PY95-Disazo Condensation Yellow

Pigment Type

organic, disazo condensation

Chemical Formula

Properties

Pigment PY95 is a semi-transparent reddish yellow pigment with high tinting strength, slightly less reddish in hue than the popular PY83.

Permanence

For a yellow organic pigment, Disazo Condensation Yellow 95 has very good lightfastness, although its lightfastness is not as good as that of red disazo condensation pigments.

Toxicity

Disazo Condensation Yellow has no significant acute hazards. Chronic hazards have not been well studied.

History

Disazo Condensation Yellow PY95 is sometimes used in yellow inkjet printer inks and other high-grade, special purpose inks.


Safety Data Sheet