Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C
2H
4 or H2C=CH2. It is a colorless flammable gas with a faint "sweet and musky" odor when pure. It is the simplest alkene (a hydrocarbon with carbon-carbon double bonds), and the second simplest unsaturated hydrocarbon after acetylene (C
2H
2).
Ethylene is widely used in chemical industry, and its worldwide production (over 109 million tonnes in 2006) exceeds that of any other organic compound. Much of this production goes toward polyethylene, a widely used plastic containing polymer chains of ethylene units in various chain lengths. Ethylene is also an important natural plant hormone, used in agriculture to force the ripening of fruits. Ethylene's hydrate is ethyl alcohol.
This hydrocarbon has four hydrogen atoms bound to a pair of carbon atoms that are connected by a double bond. All six atoms that comprise ethylene are coplanar. The H-C-H angle is 117.4°, close to the 120° for ideal sp² hybridized carbon. The molecule is also relatively rigid: rotation about the C-C bond is a high energy process that requires breaking the π-bond.
Madness please take me away
I'm the dead man walkin'
they'll kill my soul.
I'm really tired of the same sad sight
I'm not innocent, here I've lost my pride.
Oh, they'll come here again
with angel eyes without a sin
and you turn your face
I am so far from you.
Call all your pain, call all your crimes,
call and pray.
Crowd wants to bleed my hopes
and feeds on my fear again until I go
and screams to me "YOUR TIME HAS COME"
no chains, no lies, electric glow.
Now they are here again
within their power to burn my sins
and you turn your face
I am so far from you.
Call all your pain, call all your crimes,