Winsor & Newton Professional Watercolor - Mineral Gray, 14 ml Tube

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Item #:00319-2702
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Winsor & Newton Professional Watercolor - Mineral Gray, 14 ml Tube and swatch

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Product Details

No.
427
Description:
Professional Watercolor
Color:
Mineral Gray
Tube Size:
14 ml (0.47 oz)
Series:
1

Colors on Monitors -

Due to differences in users’ monitors, the colors presented are an approximation of the true color.
Shipping Note - Due to manufacturer distribution restrictions, Winsor & Newton products cannot be shipped to addresses outside of North America.

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Pigment Information

This color contains the following pigments:

PB29-Ultramarine [Blue]

PBk19-Slate Gray

PW5-Lithopone


Pigment Name

PB29-Ultramarine [Blue]

Pigment Type

inorganic

Chemical Name

complex silicate of sodium and aluminum with sulfur

Chemical Formula

Na8-10Al6Si6O24S2-4 or Na6-8Al6Si6O24S2-4

Properties

Ultramarine is the standard warm blue, a brilliant blue pigment that has the most purple and least green in its undertone. It has a moderate to high tinting strength and a beautiful transparency. Synthetic Ultramarine is not as vivid a blue as natural Ultramarine. Ultramarine dries slowly in oil and tends to produce clean, though granular, washes in watercolor. French Ultramarine mixes well with Alizarin colors in oil and watercolor form to create a range of purples and violets. It can dull when mixed with white in acrylic form, but mixes well with other colors. The shade varies based on manufacturer. Considered a great color for glazes, it is not suitable for frescoing.

Permanence

Ultramarine has excellent permanence, although synthetic Ultramarine is not as permanent as natural Ultramarine. It may discolor if exposed to acid because of its sulfuric content.

Toxicity

Ultramarine has no significant hazards.

History

The name for this pigment comes from the Middle Latin ultra, meaning beyond, and mare, meaning sea, because it was imported from Asia to Europe by sea. It is a prominent component of lapis lazuli and was used on Asian temples starting in the 6th century. It was one of the most expensive pigments in 16th century Europe, worth twice its weight in gold, and so was used sparingly and when commissions were larger. Ultramarine is currently imitated by a process invented in France in 1826 by Jean Baptiste Guimet, making blue affordable to artists and extending the range of colors on their palettes.


Pigment Name

PBk19-Slate Gray

Pigment Type

inorganic

Chemical Name

hydrated aluminum silicate

Properties

Slate Gray is a semi-opaque, neutral gray pigment produced from powdered slate.

Permanence

Slate Gray is absolutely lightfast.

Toxicity

Hydrated aluminum silicate is not considered toxic, however pigment from natural sources may contain impurities.

History

Mineral sources of Slate Gray have been used as a colorant since prehistoric times. 


Pigment Name

PW5-Lithopone

Pigment Type

inorganic

Chemical Name

coprecipitated zinc sulphide and barium sulphate

Chemical Formula

Zn + BaSO4

Properties

Lithopone is a low tinting strength, semi-transparent white pigment that is often used as a filler or extender in other colors, or as the base for laked pigments.

Permanence

Lithopone is absolutely permanent and lightfast.

Toxicity

Lithopone is not toxic.

History

Lithopone was discovered by G.F. de Doubet in 1850. It  was developed commercially in the 1870s as a substitute or supplement for lead carbonate, to overcome the many shortcomings of white lead pigment, including toxicity, poor weathering, and darkening in the presence of sulfur compounds. It is used most often in interior paints and enamels. Its use as a white pigment has been superceeded in many applications by titanium dioxide.


Safety Data Sheet

UPC Code: 884955095294