Soda Ash 500g
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.
|Chemical Name:||Sodium Carbonate Heptahydrate|
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.
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.
DANGER! MAY CAUSE EYE BURNS. HARMFUL IF SWALLOWED OR INHALED. CAUSES IRRITATION TO SKIN AND RESPIRATORY TRACT.
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.
|Processing Time||Usually ships the next business day.|
|Size||500 g bag|