Star Wars: Our Empire
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Star Wars: Our Empire

We are a site created by Star Wars fans, for Star Wars fans. The staff here on SWOE pride ourselves on providing everything needed to suit your Star Wars needs and will try to accomidate all your Star Wars expectations...Join us...It is your Destiny
 
HomeGalleryLatest imagesSearchRegisterLog in

 

 Formaldehyde

Go down 
AuthorMessage
tranthuongbn




Posts : 45
Join date : 2010-12-29

Formaldehyde Empty
PostSubject: Formaldehyde   Formaldehyde I_icon_minitimeWed Dec 29, 2010 5:17 am

Formaldehyde is more complicated than many simple carbon compounds because it adopts different forms. Formaldehyde is a gas at room temperature, but the gas readily converts to a variety of derivatives. These derivatives generally behave similarly to gaseous formaldehyde and are used in industry. One important derivative is the cyclic compound trioxane, the "trimer" of formaldehyde with formula is (CH2O)3. When dissolved in water, formaldehyde converts to H2C(OH)2, a diol (i.e. a compound with two hydroxy groups). Aqueous solutions of formaldehyde are referred to as formalin. "100%" formalin consists of a saturated solution of formaldehyde (this is about 40% by volume or 37% by mass) in water, with a small amount of stabilizer, usually methanol to limit oxidation and degree of polymerization. A typical commercial grade formalin may contain 10–12% methanol in addition to various metallic impurities. The diol also exists in equilibrium with a series of short polymers (called oligomers), depending on the concentration and temperature. The infinite polymer formed from formaldehyde is called paraformaldehyde. The cyclic trimer is called metaformaldehyde (or 1,3,5-trioxane).


hotels patmos
steroid alternatives
Back to top Go down
 
Formaldehyde
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Star Wars: Our Empire :: Jawa Sandcrawler :: The Classifieds-
Jump to: