NEW PRODUCTS THIS WEEK Chalcogenide spinels. Family of materials have ferromagnetic properties below 130° K.; unusual conductivity properties; doped and undoped forms. Semi-Elements, Inc., Saxonburg, Pa. C 62
Equipment
Radioisotope heaters (ThermoPac). Family of compact heat ers derive heat from radioisotope decay; three models generate 2.0, 2.5, and 5.0 watts of heat and weigh 0.2, 0.5, and 2.0 pounds, respectively; pass severe-environment tests; radiation dose rates within acceptable industrial levels; last about a year. Atomics International, Canoga Park, Calif. Ε 30 Conductive rubber (Customote No. 201). ductive silicone rubber can be used in gasket —70° to 400° F; provides ideal pressure water and many common chemicals; selection Custom Materials, Inc., Chelmsford, Mass.
Bismuth single crystals. Cylindrically shaped crystals are made by modified Bridgeman technique using soft-mold method; diameters between 0.25 and 1.5 inches; up to 6 inches long; high purity; for basic metal studies, neutron absorption studies. Alfa Inorganics, Inc., Beverly, Mass. C 63
Electrically con form; useful from seal resistant to of thicknesses. Ε 31
Polymerized tall oil (Emtall 664). Highly polymerized, highrosin-containing oil is economical replacement for rosin and more expensive fatty acids and oils in alkyds, epoxy esters, and other types of resins. Emery Industries, Inc., Cincinnati, Ohio C 64
Recording titrator (Model E-436). Recording potentiometric titrator has sensitivity of one pH full scale over 250 mm.; built-in constant current and voltage sources for voltametry and amperometry; accessories for conductometric, photometric, and coulometric titrations. Brinkmann Instruments, Westbury, N.Y. Ε 32
Literature O-rings and washers booklet. Describes company's O-rings and leather backup washers; O-ring sealing characteristics and specification data on sizes, elastomers and compounds, fluid compatibility, and groove design; 32 pages. E. F. Houghton & Co., Philadelphia, Pa. L1
Portable calibrator. Pressure-vacuum gage calibration system allows transferring laboratory accuracies to other locations for remote closed-loop calibrations; no warmup period required; compensates for temperature and perpendicularity; four models. Seegers Instrument Co., Barrington, 111. Ε 33
Fluid handling systems brochure. Cives technical data of Teflon products which are used to convey highly corrosive or ultrapure fluids free from contamination and leaks. Fluorocarbon Co., Anaheim, Calif. L2
Blow molding system ( AEB 440). System features continuous extrusion to avoid hangup and degradation of plastic; variable speed control; available separately or with vented two-stage extruder and PVC head. Akron Extruders, Canal Fulton, Ohio Ε 34
Ringelmann smoke chart (Information circular 8333). Helps estimate color and approximate density of smoke issuing from smokestacks; instructions for use; for smoke abatement and fuel efficiency work; reissue. Bureau of Mines, Pittsburgh, Pa. L3
Chemicals
PVC processing material (Levapren VC 45/50). Terpolymerizate of ethylene, vinyl acetate, and vinyl can be used in processing both hard and soft polyvinyl chloride; finely ground powder makes dry-blend mixtures with PVC possible. Naftone, Inc., New York, N.Y. C 60
Polarography booklet. Cives applications in seven industrial and scientific categories for single-sweep polarography with the storage oscilloscope; 95 examples of organic polarographic de terminations; illustrated; 12 pages. Chemtrix, Inc., Beaverton, Ore. L4
Dehydrohalogenating agent. l,5-Diazabicyclo[5.4.0]undec-5ene (DBU) is good dehydrohalogenating agent; more reactive than amines; requires mild conditions for reaction, even with unstable compounds. Aldrich Chemical Co., Inc., Milwaukee, Wis. C 61
Baths and circulators catalog. Lists and illustrates company's constant temperature baths and circulators; includes various new models, solid-state control systems; stainless steel designs. Lauda Instruments, Westbury, N.Y. L5
For more information on products listed, check the appropriate numbers on the coupon below and mail. Inquiry coupon is valid if received by September 25.
June 26, 1967
Functions A Β C D Ε F
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α α D D G
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C
A Β C D Ε F G H I
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( ( ( ( ( ( (
) ) ) ) ) ) ) ) ) )
Engineering and Construction Food and Kindred Products Textile Mill Products Paper and Allied Products Government Chemicals and Allied Products Elastomers, Polymers, Plasticizers Drugs Detergents, Cosmetics, Specialties Paints, Varnishes, etc.
Κ L M Ν Ο P Q R S Τ
( ) Petroleum Refining, Asphalts, Lubricants ( ), Rubber and Plastic Products ( ) Independent Laboratories ( ) Consultants ( ) Primary Metal Industries ( ) Fabricated Metal Products Machinery and Equipment Transportation Equipment Instruments and Controls ( ) Education
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46 C&EN JUNE 26, 1967
