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Super Glue

What is super glue?

Super glue is non-toxic, instant colorless adhesive which is a cyanoacrylate. Methyl-2-cyanaocrylate (C5H5NO2) and ethyl-2-cyanaocrylate (C6H7NO2) are also adhesive which are usually named super glue or krazy glue. This compound was discovered by Dr. Harry Coover and Fred Joyner during an experiment to create gun-sight lenses for the World War II. They realized that because the compound is naturally sticky, it quickly glue things together with great strength. Many years later the first glue was made.

Structure of cyanoacrylate

How it works

Super glue is required to react with hydroxyl ions in order for it to work. The super glue goes through a process called anionic polymerization. The cyanoacrylate molecules link together when in contact with water and form a plastic-like mesh.The glue thickens and hardens until the molecules can no longer move which is why is has so much strength.

 Uses

This adhesive can be used for mostly everything, because of its low shearing strength and resistance to water. It creates strong bonds with non-porous materials. Can be used to bond metals and assemble prototype electronics. Also, it can be used to give wood glossy shine. Although it is not meant for glass, it can be used a temporary solution and because of its resistance to water, it can be used to glue corals in marine aquariums. Medical researchers have proved that super glue is capable of stopping the bleeding of tissues. Super glue has many uses because of its strong bonds and resistance.



Properties


 * Liquid form in room temperature
 * C5H5NO2 has a flashpoint of 79 degrees C
 * Density a little higher than water
 * C6H7NO2 has a flashpoint of 75 degrees C
 * Has a density of 125

Toxicity

<span style="display: block; font-family: Georgia,serif; font-size: 140%; text-align: left;">Even though super glue is non-toxic, it can irritate the eyes, nose and throat because of the fumes. Can cause skin irritation and trigger asthma in rare cases. Also, because polymerization produces heat, which can burn the skin.

<span style="color: #e9f52e; display: block; font-family: Georgia,serif; font-size: 150%; text-align: left;">How to remove

<span style="font-family: Georgia,serif; font-size: 140%;">With its strong bonds, super glue has to be in low temperature and be softened with acetone which can be found in nail polish. Nitromethane and methylene chloride can also be used to remove super glue. <span style="color: #ff0000; font-family: Georgia,serif; font-size: 140%;">WARNING: do not apply cyanoacrylate to cotton or wool. Will react and cause fire hazards.

**<span style="font-family: Georgia,serif; font-size: 110%;">An experiment of what happens when super glue comes in contact with cotton ** media type="youtube" key="9F11lfW6WsQ" height="315" width="560" align="center"

<span style="color: #ff0000; display: block; font-family: Georgia,serif; text-align: center;">** DO NOT TRY THIS AT HOME!!!!! **

<span style="color: #008080; display: block; font-family: Georgia,serif; font-size: 140%; line-height: 0px; overflow: hidden; text-align: center;">Re <span style="color: #008080; font-family: Georgia,serif; font-size: 150%;">References

<span style="font-family: Georgia,serif; font-size: 140%;">Things I learned: <span style="font-family: Georgia,serif; font-size: 140%;">Neutralizing stomach acids (Kavishka)
 * <span style="font-family: Georgia,serif; font-size: 140%;">[]
 * <span style="font-family: Georgia,serif; font-size: 140%;">[|www.howstuffworks.com/question695.htm]
 * <span style="font-family: Georgia,serif; font-size: 140%;">[|www.krazyglue.com/about/knowledge3.aspx]
 * <span style="font-family: Georgia,serif; font-size: 140%;">[|www.news.softpedia.com/What-is-Superglue-87269.shtml]
 * <span style="font-family: Georgia,serif; font-size: 140%;">[|http://en.wikipedia.org/wiki/Cyanoacrylate]
 * <span style="font-family: Georgia,serif; font-size: 140%;">[]
 * <span style="font-family: Georgia,serif; font-size: 120%;">Stomach acids have a pH of 1 or 2
 * <span style="font-family: Georgia,serif; font-size: 120%;">Heartburn is caused when the barrier between the esophagus and stomach is open and the acid enter the esophagus
 * <span style="font-family: Georgia,serif; font-size: 120%;">When stomach acid and antacid reacts, it creates salt and carbonic acid

<span style="font-family: Georgia,serif; font-size: 140%;">Scotchgard (Summaya)
 * <span style="font-family: Georgia,serif; font-size: 120%;">Scotchgard is a treatment to remove stains and fabric protection
 * <span style="font-family: Georgia,serif; font-size: 120%;">It was discovered by Patsy Herman and Sam Smith by accident
 * <span style="font-family: Georgia,serif; font-size: 120%;">When inhaled, it can cause blood contamination, liver damage and birth defects

<span style="font-family: Georgia,serif; font-size: 140%;">Teflon (Aimee Ramjattan)
 * <span style="font-family: Georgia,serif; font-size: 120%;">Teflon is a white powder used to make pots and pans
 * <span style="font-family: Georgia,serif; font-size: 120%;">Non-toxic but when broken down, it releases toxic chemicals
 * <span style="font-family: Georgia,serif; font-size: 120%;">Teflon itself can't cause cancer but the compound is potentially a carcinogen