2- Butenes Physical characteristics

A physical characteristic is their odor 2-butene-1-thiol, CH,CH=CHCH2SH, and 3-methyl-l-butanethiol, CH3CH(CH,)CH2CH2SH, contribute to skunk smell. 

Chemical Designations - Synonyms 3-Buten-2-one Chemical Formula CH3COCH=CHj. Observable Characteristics - Physical State (as shipped) Liquid Color Colorless to light yellow Odor Powerfully irritating. 

Linear low-density polyethylene (LLDPE)440-442 is a copolymer of ethylene and a terminal alkene with improved physical properties as compared to LDPE. The practically most important copolymer is made with propylene, but 1-butene, 4-methyl-1-pentene, 1-hexene, and 1-octene are also employed.440 LLDPE is characterized by linear chains without long-chain branches. Short-chain branches result from the terminal alkene comonomer. Copolymer content and distribution as well as branch length introduced permit to control the properties of the copolymer formed. Improvement of certain physical properties (toughness, tensile strength, melt index, elongation characteristics) directly connected to the type of terminal alkene used can be achieved with copolymerization.442... 

Chemical Designations — Synonyms 1-Butene Oxide 1,2-Butylene Oxide alpha-Butylene Oxide 1,2-Epoxybutane Chemical Formula C2H5CHCH2O. Observable Characteristics — Physical State (as normally shipped) Liquid Color Colorless Odor Pungent. Physical and Chemical Properties — Physical State at 15 C and 1 atm. Liquid Molecular Weight 72 Boiling Point at 1 atm. 145 63, 336 Freezing Point <-58, <-50, <223 Critical Temperature Data not available ... 

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