Document 821JX03VZZ6EQexkrjaL7z0vB

CLASS 8500 Inorganic reds other than iron oxides 8500-85U9 Red Lead 8550-8599 Cadmium Lithopone and miscellaneous Page 85-1 May 1, 1955 0007-PMC-000000423 o^y-i uactraium Rea, Deep 85D52 Cadmium Red, Deep #112 85>D5>U Cadmium Selenide #lhl9 &5N3 Cadmium Maroon B. Dispersions, Purchased 17 2.i 2.81 2.8 Automotive 18 2.81 Number Name % Shade % Resin Bulk #/G - 85?U : 85F6 85N1 RBH 57 RBH AN-C638-E107 RBH 5h20 1*5 Medium Red 12 "RS N/C Medium Red CAB 5o Medium Red 12.5 VIHH 5.5o 12.71* 12.75 H. INORGANIC REDS, MISCELLANEOUS A. Pigments Number Name Oil Abs. Bulk SW 10.9.1 G/100# 8515 8505 8507 8517 85M1 Red Lead, Regular 9$% Red Lead, Fumed 9S% Red Lead, Fumed 91% Red Lead, Regular 91% Red Lead, Regular 9&% 6 1.35 7 1.35 7 1.35 6 1.35 7 1.36 85C1 Copper Maroon RT592D 5.31* B. Dispersions Number Name 85D51 Copper Maroon Resin N/C #/G n.5o 0007-PMC-000000424 Page 85-3 May 1,.1955 Remarks CADMIUM REDS consist essentially of a complex of cadmium, sulfide and selenium on a base of barium sulfate. Because of this composition they are also called cadmium lithopones. They are of primary importance to the paint industry because they"are the cleanest and most brilliant of the inorganic reds. They have unusual re sistance to heat and chemical reaction. Probably the most important single characteristic of this group of pigments is that they combine the cleanness and brilliance of an organic red while having exceptionally good permanence, a characteristic which many organics lack. The main drawbacks connected with the use of the cadmium reds are their relatively high cost as compared to other inorganic reds such as the iron oxides, and the fact that the present defense effort has resulted in limit ing the supplies of selenium necessary to make the red shades of cadmium lithopones. Because of their unique characteristics they are used in finishes which must withstand high temperatures, non-bleeding red lacquers which are to be over striped with white, and in certain typeg of paints where the combination characteristics of brilliance and chemical resistance are required. The red lead pigments are used primarily in metal protective primers where they serve as corrosion inhibitors. Due to the density and chemical inert ness of the red leads they tend to prevent rusting and are used in many structural steel primers. 0007-PMC-000000425