Phthalic anhydride 99.5% 85-44-9 best price

• Post Date:

  Dec 17,2019

• Expiry Date:

  Dec 16,2020

• Detailed Description:

  Quantity: 1Metric Tons
  Price:1000 USD Metric Tons
  Payment Method: L/C,T/T
  Detailed Product Description
  
  
  phthalic anhydride
  1.Good quanlity and
  2.the manufacture of plasticizers, alkydresins
  3.Phthalic Anhydride
  4. SGS ,BV TE
  
  
  phthalic anhydride
  
  
  
  1 Phthalic anhydride is the organic compound with the formula C8H4O3. This anhydride of phthalic acid, a colourless solid, is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. In 2002, approximately 4.6 billion kilograms were produced
  
  
  
  2 Applications in industry and organic synthesis
  
  Phthalic anhydride is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. It undergoes hydrolysis and alcoholysis. Hydrolysis by hot water forms ortho-phthalic acid. This process is reversible: Phthalic anhydride re-forms upon heating the acid above 180 °C.
  
  
  
  3 Hydrolysis of anhydrides is not typically a reversible process. However, phthalic acid is easily dehydrated to form phthalic anhydride due to the creation of a thermodynamically favorable 5-membered ring.
  
  Organic synthesis
  
  
  
  4 Phthalic anhydride is a precursor to a variety of reagents useful in organic synthesis. Important derivatives include phthalimide and its many derivatives. Chiral alcohols form half-esters (see above), and these derivatives are often resolvable because they form diastereomeric salts with chiral amines such as brucine. A related ring-opening reaction involves peroxides to give the useful peroxy acid:
  
  

• Company:

  Shanxi Solid Industrial Co,. Ltd.     [ China ]        

• Contact:

  Binbin Zhang

• Tel:

  0086-351-8390369

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  0086-351-8390339

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