Ethylene combustion properties

The halogen compounds used were methylene dichloride, chloroform, carbon tetrachloride, ethylene dichloride, ethyl bromide, ethylene dibromide, bromoform, methyl iodide, and ethyl iodide. The hydrocarbons selected for their interesting combustion properties were hexane, 2-methylpentane, 2,2-dimethylbutane, hex-l-ene, heptane, methylcyclo-hexane, isooctane, diisobutylene, benzene, toluene, m-xylene, and ethylbenzene. 

Polyimide. Polyimide is a biaxiaHy oriented high performance film that is tough, flexible, and temperature- and combustion-resistant. Its room temperature properties compare to poly(ethylene terephthalate), but it retains these good characteristics at temperatures above 400°C. Its electrical resistance is good and it is dimensionally stable. The principal detriment is fairly high moisture absorbance. The main uses are for electrical insulation, particularly where high temperatures are prevalent or ionizing radiation is a problem. The films may be coated to reduce water absorption and enhance... 

Besides freeze protection, antifreezes provide many other performance properties that enhance the operation of a heat-transfer system. Because the internal combustion engine is by far the largest antifreeze appHcation, and ethylene glycol is the predorninant antifreeze in use, the following focus on the performance properties of an ethylene glycol-based antifreeze and their relationship to engine cooling. 

There is one use to which levulinic acid can immediately be put. We have found that its sodium salt has ideal properties for an antifreeze agent. It has definite advantages over ethylene glycol for this purpose. It is a solid and is therefore more easily marketed than the liquid glycol. It is less corrosive to the iron parts of internal combustion engines than is tap water itself and has no detrimental effect on the rubber connections used in engines. 

Wang, Z., Shen, X., Fan, W., Hu, Y., Qu, B., andZou, G., Effects of poly(ethylene-co-propylene) elastomer on mechanical properties and combustion behaviour of flame retarded polyethylene/magnesium hydroxide composites, Polym. Int., 2002, 51(7), 653-657. 

Ethylene shows all the chemical properties of alkenes. It undergoes combustion, addition reactions and polymerization reactions. It burns with a bright yellow flame. 

Most of the bromine produced is converted into ethylene dibromide, C2H4Bro, which is an important constituent of ethyl gas, together with tetraethyl lead, (CoH-)4pb. Tetraethyl lead has valuable anti-knock properties, but its continued use would cause damage to a motor through the deposition of metallic lead, unless some way were found to eliminate this deposit. The ethylene dibromide that is added to the gasoline provides bromine on combustion, which combines with the lead, permitting its elimination as lead bromide, PSBro. 

Catalytic combustion of hydrocarbons on ceria has been studied for a long time. Both paraffins and unsaturated hydrocarbons are totally oxidised on ceria between 300°C and 500 C. Previous results of Morooka and co-workers have clearly evidence the catalytic properties of ceria compared to other oxides in total oxidation of acetylene, ethylene, propene, isobutene and propane [39]. They noted... 

Properties Darkbrown, viscous liquid. D 1.087. Soluble in acetone, benzene, and ethylene dichloride insoluble in gasoline and water. Combustible. 

Properties Crystalline solid. Mp 62.1C, bp 282C, d 0.912 (80/4C), viscosity 9.9 centistokes (80C), 1.42 centistokes (160C), flash p 262F (127.7C) (OC), Combustible. Very soluble in ethanol, benzene, carbon tetrachloride, ethyl ether, and acetone essentially insoluble in water, ethylene glycol, and 10% aqueous sodium hydroxide. 

Properties Colorless liquid distinct odor. Bp 158C (60C) (20mmHg), mp3.5C, d 1.1858 (25/4C), refr index 1.4863 (25C). Miscible with benzene, alcohol, carbon tetrachloride immiscible with ethylene glycol, glycerol, and water. Combustible. 

Properties White powder with mild chlorine odor. Mp approximately 130C, sublimes approximately 100C without decomposition. Contains approximately 36% active chlorine. Slightly soluble in water with gradual liberation of hypochlorous acid soluble in benzene, chloroform, ethylene dichloride, alcohol. Combustible with evolution of chlorine at 210C. 

Properties Colorless liquid odor like that of ethylene dichloride. Bp 178.5C, d 1.2220 (20/20C), wt/ gal 10.2 lb (20C), refr index 1.457 (20C), flash p (CC) 131F (55C), fp -51.8C, autoign temp 696F (368C). Miscible with most organic solvents insoluble in water. Combustible. 

Properties Colorless, syrupy liquid practically odorless sweetish taste. Bp 245.0C, fp -80C, d 1.1184 (20/20C), wt/gal9.35 (15C),refr index 1.446 (25C), surface tension 48.5 dynes/cm (25C), viscosity 0.30 cP (25C), vap press 0.01 mm Hg (30C), flash p 255F (123.9C), autoign temp 444F (228.9C). Extremely hygroscopic. Noncorrosive. Powers freezing point of water miscible with water, ethanol, acetone, ether, ethylene glycol immiscible with benzene, toluene, carbon tetrachloride.. Combustible. 

Properties Clear, deep-reddish-brown, thick liquid. D 1.07, stable in storage. Insoluble in water soluble in acetone, ethylene dichloride, benzene, and gasoline readily disperses. Combustible. 

Properties Yellowish-white granulated waxy powder. D 1.15, mp95-105C. Soluble in benzene insoluble in acetone, gasoline, ethylene dichloride, and water. Combustible. 

Properties Colorless to light-amber liquid or crystals strong persistent odor. D 1.012 (20/20C), refr index 1.527 (20C), congealing temp 17.5-21C, bp 218C, flash p 210F (99C) (TOC). Insoluble in water, ethylene glycol, glycerol miscible with alcohol, ether, benzene, and toluene. Combustible. 

---