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A true grease consists of an oil or other fluid lubricant that is mixed with a thickener, typically a soap, to form a solid or semisolid. [1] Greases are usually shear-thinning or pseudo-plastic fluids, which means that the viscosity of the fluid is reduced under shear stress.
Mathematical Tables from Handbook of Chemistry and Physics was originally published as a supplement to the handbook up to the 9th edition (1952); afterwards, the 10th edition (1956) was published separately as CRC Standard Mathematical Tables. Earlier editions included sections such as "Antidotes of Poisons", "Rules for Naming Organic Compounds ...
Chemical Book East West University: commercially available compounds CASno, suppliers, properties "Chemical Book". 200,000 Chemical Register from 20,000 vendors CASno mainly from larger-scale suppliers "Chemical Register". 1,750,000 ChemIDplus: National Library of Medicine other NLM databases; regulated substances CASNo UNII structure CMNPD
2) and lubricant oil are miscible, i.e. form a single phase upon mixing. [1] [2] The value gives an approximation for the content of aromatic compounds in the oil, [2] since the miscibility of aniline, which is also an aromatic compound suggests the presence of similar (i.e. aromatic) compounds in the oil. The lower the aniline point, the ...
Typically lubricants contain 90% base oil (most often petroleum fractions, called mineral oils) and less than 10% additives. Vegetable oils or synthetic liquids such as hydrogenated polyolefins , esters , silicones , fluorocarbons and many others are sometimes used as base oils.
The oil and the oil filter need to be periodically replaced; the process is called an oil change. While there is an entire industry surrounding regular oil changes and maintenance, an oil change is a relatively simple car maintenance operation that many car owners can do themselves.
Some types are synthetic liquid lubricants that have been used in the aerospace industry for over 30 years. [1] The main properties of PFPE are being temperature resistant between −58 °C (215 K) and 257 °C (530 K) (depending on specific composites), having very low outgassing compared to other fluids ( vapour pressure of 6 × 10 −8 Torr ...
In a modern diesel engine, the fuel is part of the engine lubrication process. Diesel fuel naturally contains compounds that provide lubricity, but because of regulations in many countries (such as the US and the EU countries), sulphur must be removed from the fuel before it can be sold.