Evonik Isobutene Inflammable gas

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Evonik Isobutene Inflammable gas
Categories:	Fluid
Material Notes:	CAS No: 115-11-7 Under normal conditions Isobutene is a colorless inflammable gas with a typical olefin odor. It is easily liquifiable by cooling or under pressure. Isobutene is soluble in ether, alcohol and hydrocarbons, but nearly insoluble in water. It has no corrosive properties. In its chemical behavior it shows the typical reactions of olefins like hydrogenation, electrophilic addition, oxidation and polymerization. The product is extremely flammable. Applications: Isobutene is a starting material for various intermediates and final products such as: Butyl rubber, polyisobutene, diisobutene, tert.-butanol, alkyl-tert.-butyl ether, vitamins, fragrances, isoprene, mercaptanes, alklphenols, antioxidants, synthetic resins, adhesive resins, tackifiers, methacroleine, methacrylic acid, methyl methacrylate, PMMA, additives for fuels and lubricants, dispergators, peroxidic polymerization initiators, cross-linking agents and curing agents, organic acids, alkylchlorides, methallylchloride, methallylsulfonate, isoamylalcohol, isobuteneoxide. Information provided by Evonik
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Physical Properties	Original Value	Comments

Density	1.93 g/cc
	0.555 g/cc @Temperature 50.0 °C
	0.569 g/cc @Temperature 40.0 °C
	0.580 g/cc @Temperature 30.0 °C
	0.594 g/cc @Temperature 20.0 °C
	0.606 g/cc @Temperature 10.0 °C
	0.617 g/cc @Temperature 0.000 °C
	0.628 g/cc @Temperature -10.0 °C
Molecular Weight	56.11 g/mol
Vapor Pressure	0.900 bar @Temperature -10.0 °C
	1.32 bar @Temperature 0.000 °C
	1.87 bar @Temperature 10.0 °C
	2.56 bar @Temperature 20.0 °C
	3.50 bar @Temperature 30.0 °C
	4.64 bar @Temperature 40.0 °C
	6.06 bar @Temperature 50.0 °C

Chemical Properties	Original Value	Comments
Critical Pressure	40.0 bar
Critical Temperature	144.7 °C

Thermal Properties	Original Value	Comments
Heat of Vaporization	394 J/g	at bp
Melting Point	-140.3 °C
Boiling Point	-6.90 °C @Pressure 0.1013 MPa

Descriptive Properties
Content	<1 mg/kg	Sulfur
	<1 mg/kg	Dimethylether
	<100 mg/kg	Ethene/Propene
	<1000 mg/kg	n-Butane/Isobutane
	<20 mg/kg	Isoprene
	<30 mg/kg	Alcohols
	<30 mg/kg	Carbonyles
	<5 mg/kg	tert.-Butylalcohol
	<5 mg/kg	Methyl-tert.-butylether
	<50 mg/kg	Water
	<500 mg/kg	Butene-1
	<500 mg/kg	2-Butene
	<75 mg/kg	Butadiene
	>99.9%	Isobutene
Heat of Evaporation	0°C
	10°C
	-10°C
	20°C
	30°C
	40°C
	50°C

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PEVONIL946 / 197150

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