Thursday, February 24, 2011

Calling All Chemists!


Calling all chemists! Are you looking to synthesize chemicals such as alanine, paraldehyde, or acetal? Or perhaps you are producing perfumes, resins, or basic dyes? Then acetaldehyde, a highly reactive flammable liquid with a fruity odor, is what you need! This compound can be used to produce all of these products. It is found naturally in ripe fruit, coffee, and alcohol. It is also produced by the burning of car fuels, woodstoves, and residential fireplaces. In the liver, ethanol is broken down into acetaldehyde before being broken down into smaller, safer components. You can easily come across this chemical, as it is naturally produced by plants in their normal metabolism.

**WARNING**
Although very useful for synthesizing chemicals, preserving fruits and fish, a solvent for rubber, tanning, or paper industries, a flavoring agent, the denaturation of alcohol, and many other things, one must be careful when handling it. It is known to cause severe hangover symptoms if in the system too long, as it is more toxic than alcohol. It naturally breaks down in the human body, but prolonged exposure (especially in those who are deficient in the gene which breaks down the compound) can cause irritation to eyes, hands, and respiratory tract. It is also known to most likely be cancer-causing. Therefore, use extreme caution while working with acetaldehyde or consuming products known to contain acetaldehyde.

Sunday, February 20, 2011

Intro to Acetaldehyde (Ethanal)


About me:

Chemical formula:
CH3CHO

Name: Acetaldehyde (ethanal)


Polarity: Polar molecule



When I meet another acetaldehyde molecule, I am attracted to it by London dispersion forces, caused by the temporary imbalance of electrons around me. As our electrons move around us, we experience temporary dipoles, and our temporarily positive ends are attracted to the temporarily negative ends of each other. I am also attracted by the electrostatic dipole dipole force. This is because I am a polar molecule, and my positive end is attracted to the negative end of another molecule. Finally, I am attracted by hydrogen bonding. I have four hydrogen atoms which are bonded to one of my two carbon atoms. Whenever I encounter another acetaldehyde molecule, my hydrogen will break its covalent bond with carbon and form a temporary covalent bond with the oxygen of the other molecule. It will go back and forth, making and breaking bonds, between its original carbon and the oxygen from the other molecule.