Nuclear reactors heat-transfer agents

EINECS 231-132-9 HSDB 687 Natrium Sodio Sodium Sodium (liquid alloy) Sodium-23 Sodium ion Sodium metal UN1428. Metallic element polymerization catalyst for synthetic rubber, laboratory reagent, coolant in nuclear reactors, heat transfer agent, manufacture of tetraethyl and tetramethyl lead, sodium peroxide, sodium hydride radioactive isotopes in tracer studies and medicine, mp = 98 bp = 892 SG = 0.9 reacts with H2O. Foseco (FS) Ltd Ociel Chem. Ltd... 

Sodium is used as a heat transfer agent in cooling nuclear reactors. It has a relatively high specific heat and an acceptable fiquid range for the purpose. (It melts just below 100°C.)... 

Some efforts have been made to design nuclear reactors in which liquid metals are used as heat transfer agents. Liquid sodium is the metal most often suggested. Liquid sodium has many attractive properties as a heat transfer agent, but it has one serious drawback. It reacts violently with water and great care must be taken, therefore, to make sure that the two materials do not come into contact with each other. 

Use Production of sodium by electrolysis, heat transfer agents, reaction medium in chemical synthesis, heat-treatment of metals (from 350 to 2400F), solvents for the metals corresponding to their cations, nuclear power reactors. 

NaK (pronounced nack), as the eutectic is called, as well as the alkali metals in general, have found new interest as heat dissipating and heat transfer agents in nuclear reactors and in motor valve stems of internal combustion engines. These uses have led to a sp ecial series of articles in the literature on the subject of handling these substances and their properties. - ... 

Uses Polymerization catalyst for synthetic rubber laboratory reagent reagent in reductions waste oil/hydrocarbon refining coolant, heat transfer agent in nuclear reactors mfg. of tetraethyl and tetramethyl lead, sodium peroxide, sodium hydride for photoelectric cells in sodium lamps sodium-sulfur batteries radioactive forms in tracer studies and medicine Manuf./Distrib. Advanced Synthesis Tech. http //www.advancedsynthesis. com, Aldrich http //www.slgma-aldrlch.com, Alfa Aesar http //www.alfa.com. Assoc. Octel Co Ltd http //www. octel-corp. com, Atomergi c... 

Heptafluoropropane Octafluorocyclobutane heat transfer agent, nuclear reactors Sodium... 

Poly(p-phenylene) is a thermally stable material. It has been shown that it does not decompose below 400° C [213] in air and only 7% of the mass is lost when the material (Kovacic PPP) is heated in N2 to 900°C [214]. Oligophenyls have therefore been used as high-temperature lubricants, hydraulic fluids, heat-transfer agents, and coolants for nuclear reactors [214]. The thermal stability of the polymer is very sensitive to structural defects. In the oligophenyl series, the melting points increase with the number of phenyl units but decrease with ortho and meta linkage, as can be seen in Table 6.7. 

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