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Natural Pigments Soda Ash (sodium carbonate) 500 g - Color: White powder

SKU : NAP-500-21SOC50
The minimum order amount for this product line is $30.00
Natural Pigments Soda Ash (sodium carbonate) 500 g - Color: White powder
Discount table
Qty Price
 1   US$ 11.90 
 2   US$ 11.83 
 3   US$ 11.79 
 4-5   US$ 11.76 
 6-7   US$ 11.72 
 8-11   US$ 11.69 
 12+   US$ 11.64 
Price: US$ 11.90
US$ 11.90

Product description

Sodium Carbonate, also known as soda ash or washing soda, is a strong alkali and a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate in large transparent crystals, which readily effloresces, losing a large quantity of water to form a white powder, the monohydrate. Although this property does not interfere with the use of soda, since it is generally used in solution, yet efflorescence should be as far as possible avoided by keeping it in well-closed packages, because effloresced soda dissolves more slowly than crystallized, since it has to combine with water before it can enter into solution.

Sodium carbonate is used in making lake pigments, such as madder lake: A very fine madder lake is obtained by dissolving 700 g of aluminum sulfate in 2,000 ml of water and precipitating with 400 g of sodium carbonate, dissolved in 1,000 ml of water. The precipitate is washed with water five or six times. Then 300 g of madder dye or alizarin (20% paste), 150 g of Turkey-red oil or sulfonated caster oil and 30 g of tannin are added, and the mixture is heated to 70° C. for half an hour. Another 200 g of Turkey-red oil are added and the whole boiled for 75 minutes. The pigment is then carefully washed and dried. In preparing this pigment, the solutions must be guarded from contact with iron. In drying lake pigments, the temperature should never to exceed 60° C.

Typical Properties
Chemical Name: Sodium Carbonate Heptahydrate
Chemical Formula: Na2CO3·5H2O
CAS No.: 497-19-8
Mesh (%):
Color: White powder

Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Isolate from incompatible substances. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.

Safe Handling
Wear impervious protective clothing, including boots, gloves, apron or coveralls, as appropriate, to prevent skin contact. Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Refer to Material Safety Data Sheet.


Environmental Hazards
This product is toxic to aquatic organisms. If product is spilled, comply with Federal, State and local regulations on reporting spills. Refer to Material Safety Sheet and labels for further details.

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.
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This product is shipped from our warehouse in Gretna, NE, USA.
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
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Soda Ash (sodium carbonate) 500 g
Soda Ash (sodium carbonate) 500 g

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