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Phthalic Anhydride/PA 99.8%

Mar 20, 2018


Phthalic Anhydride/PA 99.8% Basic Info.


Model NO.:CAS No: 85-44-9


Carboxyl No.:Dicarboxylic Acid


Organic Peroxides Alkyl No.:Unsaturated Acid






Organic Peroxides Colour:White


Einecs No.:201-607-5


Packaging Details:25kg/Bag


Organic Peroxides Mf:C8h4o3




CAS No.:85-44-9






Grade:Industrial Grade






Transport Package:25kg/Bag


Specification:as you need




HS Code:2917350000


Phthalic Anhydride/PA 99.8%  Product Description


PA (Phthalic Anhydride) basic details:
English name:o - Phthalic anhydride
English alias:2,5 - Isobenzofurandione;99 + % Phthalic anhydride;2 - benzofuran-1,3 - dione.2,2 '-
(oxydicarbonyl) dibenzoic acid
Molecular formula: C8H4O3
Hereinafter referred to as: PA
Physical properties
Melting point of 131-134 ° C (lit.)
The boiling point of 284 ° C (lit.)
Does 1 g/cm3 density
Vapor density (5.1 vs air)
The vapor pressure < 0.01 mm Hg (20 ° C)
Flash point 152 ° c.
Storage conditions Store at RT.
The water solubility of 6 g/L (20 DHS C)

PA (Phthalic Anhydride) propertities:
This anhydride of phthalic acid,a colourless solid,is an important industrial chemical,especially for the large-scale production of plasticizers for plastics.Phthalic anhydride is widely used in industry for the production of certain dyes.A well-known application of this reactivity is the preparation of the anthro-
quinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride.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.

PA (Phthalic Anhydride) application:
PA is commonly used in phthalate plasticizer,unsaturated polyester resin,alkyd resin,pigment.PA manufacturing method is divided into two kinds.-ortho-xylene process and naphthalene process
according to its feed-stock.
 - Main ingredient in polyester resin,unsaturated polyester resin,alkyd-Resin
- Used in pigments
- Raw-materials of Phthalate plastixizer and PA ester polyol
- Others:medical appliances,perfumery,etc

PA (Phthalic Anhydride) Packaging Details:
600kg jumbo bag,18mt/20''FCL 
750kg jumbo bag,15mt/20''FCL 
25kg pp woven bag without pallet, 20mt/20''FCL 
25kg pp woven bag on pallet,18.5mt/20''FCL

Specification of PA (Phthalic Anhydride)

Top gradeFirst gradeQualified product
Appearancewhite crystalline powderwhite crystalline powder
molten Chroma,≤2050100
thermostable Chroma,≤50150-
Chroma of vitriol,≤60100150
crystallization point,°C≥130.5130.3130.0
Purity(mass fraction),%≥99.8099.5099.00
Free acid(mass fraction),≤,%0.200.300.50
Ash(mass fraction),%,≤0.05--

PA (Phthalic Anhydride) Handing and Storage:
Avoid dust formation.Dust can form an explosive mixture with air.Handling General advice:Electrical devices must meet the specified temperature class,Prevent electrostatic charge - sources of ignition should be kept well clear-fire extinguishers should be kept handy.Take precautionary measures against static discharges.Keep away from sources of ignition -No smoking.Ensure thorough ventilation of stores and work areas. Electrical devices must meet the specified temperature class. 

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