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Fine Ground Calcite Chalk 1 kg (2.2 lbs) Bag: Made in USA by Natural Pigments

SKU: NAP-510-11CHK1K
Fine Ground Calcite Chalk 1 kg (2.2 lbs) Bag: Made in USA by Natural Pigments
Price: US$ 6.99

Subtotal: US$ 6.99

Product description

Fine Ground Calcite Chalk 1 kg (2.2 lbs) Bag

* Description: A medium dry ground limestone with a closely-controlled particle size distribution.
* Source: Lucerne Valley, California

Chemical Analysis
* Calcium carbonate: 98%
* Magnesium carbonate: <1%

Typical Physical Properties
* Y Brightness: 92
* Retained on 325 Mesh Screen: 1%
* Moisture Loss @110° C.: 0.03%
* Oil Absorption: 8.5 g oil / 100 g pigment
* Apparent Bulk Density, Packed: 0.80 g/cc (50.0 lbs./ft3)
* Apparent Bulk Density, Loose: 1.50 g/cc (93.5 lbs./ft3)
* Specific Gravity: 2.7
* Median Particle Size: 12 microns

About White Chalk Ground
The finest whiting for making brilliant white chalk grounds. Our whiting is dry ground from limestone deposits in the Lucerne Valley, Calfornia. Dry grinding limestone reduces it to a powder without destroying its particle structure, which is important in making strong chalk grounds and providing tooth on the surface of the grounds. The larger particle size of our chalk (when compared to precipitated chalk) keeps oil absorption low, which is ideal when adding it to oil paint and mediums. In painting grounds it makes a durable surface with tooth for egg and casein tempera, distemper, encaustic and oil paint.

Add to oil colors and mediums to create textural and bodying qualities to oil paint without affecting the color. Chalk has little color in drying oil, so it can be added to oil paint without affecting the tint of the color.

Natural Pigments

Natural Pigments is a limited liability company based in Willits, California. We manufacture and distribute rare and hard-to-find materials for fine artists and decorators. We specialize in supplying artists' materials that were used in historical painting since pre-historic times up to and including the nineteenth century.

We constantly search for materials and products of the finest quality so that we can bring them direct to you from the source. To do so, we travel the world to find materials specifically for use by professional artists and decorators. We obtain minerals from mines in Afghanistan, Chile, Russia, Ukraine and Uzbekistan, to name a few places, processing these into natural pigments. We purchase resins, gums and plants from India, Kenya and Malaysia to make natural varnishes and painting mediums.

Our mission is to provide the largest variety of natural pigments, paints and other professional artists' supplies, enabling us to bring you a selection that makes shopping for rare and hard-to-find art materials easy. Our objective is to promote the education and use of these materials among artists by providing detailed information for their employment in encaustic, fresco, oil, watercolor and tempera painting.
All Natural Pigments products

Shipping weight: 2.20 lbs

This product is shipped from our warehouse in Willits, CA, USA.
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
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Fine Ground Calcite Chalk 1 kg (2.2 lbs) Bag: Made in USA by Natural Pigments

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