Lead chrome

The metal is very effective as a sound absorber, is used as a radiation shield around X-ray equipment and nuclear reactors, and is used to absorb vibration. White lead, the basic carbonate, sublimed white lead, chrome yellow, and other lead compounds are used extensively in paints, although in recent years the use of lead in paints has been drastically curtailed to eliminate or reduce health hazards. 

Employees must receive health sirveillance for certain work (eg work with flour, lead, chrome, asbestos, noise, isocyanates and some chemicals. 

Belt conveyor dryers yeast, charcoal briquettes, synthetic rubber, catalysts, soap, glue, silica gel, titanium dioxide, urea formaldehyde, clays, white lead, chrome yellow, and metallic stearates... 

Prussian blue (KFe(Fe(CN)6)) is an intense reddish blue pigment with fairly good properties. It is used as a coloring pigment in many types of paint systems and is also used in the production of lead chrome greens. 

Benzimidiazolone yellows have good opacity, very good heat resistance, good solvent resistance (little tendency to bleed) and very good lightfastness. Pigment yellow 151 (Fig. 7.8) is an example, which is used as replacements for the lead chrome pigments. 

Termodur. [G>lstable lead chrome pigment... 

Printing Lead, chrome, antimony, nickel, solvents (tduene, xylene, alcohols)... 

Lead chrome pigment Any of a series of inorganic pigments including yellows, oranges, and greens, used in PVC, polyolefins, cellulosics, acrylics, and polyesters. 

Lead nitrate Pb(N03)2-2H20. Crystalline salt soluble in water and used in the manufacture of lead chromes. 

Nitrate green nI- trat- n. Green pigment made from nitrate lead chrome and ferri-ferro cyanide. 

Its alloys include solders, typemetal, pewter and various bearing metals. The compounds of lead also receive extensive industrial and commercial application, and lead was used in the manufacture of domestic paints as a pigment and dryer. Coloured lead pigments included white lead, red lead, chrome yellow, chrome red, chrome green and brunswick green. 

Siberian red lead. Chrome red is Pb CrOj, lead oxide chromate. In our day the use of color pigments containing lead and hexavalent chromium is of course restricted for environmental reasons. 

Nitrate Green ni- trat- Green pigment made fi-om nitrate lead chrome and ferriferro cyanide. 

Watson Clay (1955) Watson, V Clay, H.F. The lightfastness of lead chrome pigments Journal of the Oil and Colour Chemists Association 38 (1955) 167-175 Watson (1918) Watson, T.L. The color change in vivianite and its effect on the optical properties The American Mineralogist 3 8 (1918) 159-161... 

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