Butenes flash points

Physical Properties of Monomers. 1-Butene [106-98-9] is a colorless, flammable, noncorrosive gas its physical properties are fisted in Table 1, and its thermodynamic properties are available (16). Because 1-butene has a very low flash point, it poses a strong fire and explosion hazard. 

Methyl-1-pentene [691-37-2] is alight, colorless, flammable fiquid its physical constants are also given in Table 1. It is an irritant and, in high concentrations, a narcotic. Like 1-butene, this chemical compound has a low flash point and represents a significant fire hazard when exposed to heat, flame, or oxidizing agents. 

Butene is a colorless, flammable, non corrosive gas. Because 1-butene has a very low flash point, it poses a strong fire and explosion hazard. 

Butadiene (1,3-butadiene, boiling point -4.4°C, density 0.6211, flash point -85°C) is made by steam cracking and by the dehydrogenation of butane or the butenes using an iron oxide (Fe203) catalyst. 

Methyl ethyl ketone (MEK boiling point 769.6°C, density 0.8062, flash point -6°C) is an important coating solvent for many polymers and is made by the sulfation and hydration of 1 or 2-butene to sec-butyl alcohol, which is then dehydrogenated to the ketone (Fig. 1). 

Methyl tertiary butyl ether (methyl-r-butyl ether, MTBE boiling point 55°C, flash point -30°C) has excited considerable interest because it is a good octane enhancer for gasoline (it blends as if it had a research octane number of 115 to 135). It also offers a method of selectively removing isobutylene from a mixed C4 stream, thus enabling the recovery of high-purity butene-1. Furthermore, methyl tertiary butyl ether can be isolated, then cracked to yield highly pure iso-butylene and methanol. 

BUTENEDIOL or 2-BUTENE-l,4-DIOL or cis-2-BUTENE-l,4-DIOL (110-64-5) C4H8O2 Combustible liquid (flash point 263°F/128°C oc). Contact with strong oxidizers may cause fire and explosions. Reacts violently with oxidizers, aliphatic amines, alkalis, ammonium persulfate, boranes, bromine dioxide, isocyanates, nitric acid, perchlorates, permanganates, peroxides and hydroperoxides, sodium peroxide, sulfuric acid, uranium fluoride. 

METHYL-3-BUTEN-2-ONE (German) (814-78-8) see methyl isopropenyl ketone. 1-METHYLBUTYL ACETATE (626-38-0) C7H14O, CH3COOCH(CH3)C3Ht Forms explosive mixture with air [explosion limits in air (vol %) 1.0 to 7.5 flash point 89°F/32°C autoignition temp 716°F/380°C Fire Rating 3]. Violent exothermic reaction... 

BUTENE OXIDE (106-88-7) Forms explosive mixture with air (flash point -7°F/-22°C). Unless inhibited, violent polymerization can be caused by elevated temperatures, sunlight, acids, aluminum chlorides, bases, iron, tin, potassium, sodium, sodium hydroxide, or certain salts. Reacts violently with oxidizers, alcohols. Reacts with hydroxides, metal chlorides, oxides. Flow or agitation of substance may generate electrostatic charges due to low conductivity. Storage tanks and other equipment should be absolutely dry and free from air, ammonia, acetylene, hydrogen sulfide, rust, and other contaminants. 

BUTEN-3-YNE (689-97-4) Flammable gas (flash point <23°F/<—5°C). Unless inhibited, forms unstable peroxides with atmospheric oxygen or air. Heat, sunlight, oxygen, 1,3-butadiene, peroxides, oxidizers can cause explosive decomposition or polymerization. Forms sensitive and highly unstable metal acetylides with silver, cobalt, copper, magnesium, mercury, and their alloys. 

METHYL-1-BUTENE-3-ONE (814-78-8) Forms explosive mixture with air (flash point 68°F/20°C). Violent reaction with aldehydes, nitric acid, perchloric acid, strong oxidizers. Contact with hydrogen peroxide can form unstable peroxides heat and/or inappropriate level of inhibitor may cause polymerization. 

Alkenes are the second hydrocarbon family. Alkenes have one or more double bonds between the carbons in the structure of the compound. The gases ethene (ethylene), propene (propylene), and butene (butylene) were discussed in Chapter 4. The first flammable liquid in the alkene family is pentene. Because it is an alkene, it has a double bond in the compound. Pentene has a boihng point of 86°F, a flash point of 0°F, a flammable range of 1.5 to 8.7%, and an ignition temperature of 527°F. The structure and formula for pentene is shown in Figure 5.35. 

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