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Phthalic anhydride

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Phthalic anhydride Basic information
Product Name:Phthalic anhydride
Product Categories:pharmacetical;ACS GradeOrganic Building Blocks;Carbonyl Compounds;Carboxylic Acid Anhydrides;Essential Chemicals;Routine Reagents;Organic Building Blocks;Building Blocks;Carbonyl Compounds;Carboxylic Acid Anhydrides;Chemical Synthesis;Organic Building Blocks
Mol File:85-44-9.mol
Phthalic anhydride Structure
Phthalic anhydride Chemical Properties
Melting point 131-134 °C(lit.)
Boiling point 284 °C(lit.)
density 1,53 g/cm3
vapor density 5.1 (vs air)
vapor pressure <0.01 mm Hg ( 20 °C)
Fp 152 °C
storage temp. Store at RT.
Water Solubility 6 g/L (20 ºC)
Sensitive Moisture Sensitive
Merck 14,7372
BRN 118515
Stability:Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air.
CAS DataBase Reference85-44-9(CAS DataBase Reference)
NIST Chemistry ReferencePhthalic anhydride(85-44-9)
EPA Substance Registry System1,3-Isobenzofurandione(85-44-9)
Safety Information
Hazard Codes Xn
Risk Statements 22-37/38-41-42/43
Safety Statements 23-24/25-26-37/39-46-22
WGK Germany 1
RTECS TI3150000
HazardClass 8
PackingGroup III
Hazardous Substances Data85-44-9(Hazardous Substances Data)
MSDS Information
SigmaAldrich English
ACROS English
ALFA English
Phthalic anhydride Usage And Synthesis
Chemical Propertieswhite crystalline solid with choking odour
UsagePhthalic Anhydride is an organic compound and the anhydride of phthalic acid (P384480). Phthalic Anhydride is an important industrial chemical commonly used in large-scale production of plasticizers f or plastics. Recent research have also evaluated Phthalic Anhydride as potential antibacterial agent.
DefinitionChEBI: The cyclic dicarboxylic anhydride that is the anhydride of phthalic acid.
General DescriptionA colorless to white lustrous solid in the form of needles with a mild distinctive odor. Moderately toxic by inhalation or ingestion and a skin irritant. Melting point 64°F Flash point 305°F. Forms a corrosive solution when mixed with water. Used in the manufacture of materials such as artificial resins.
Air & Water ReactionsReacts, usually slowly with water to form phthalic acid and heat [Merck 11th ed. 1989]. The phthalic acid is somewhat soluble in water.
Reactivity ProfilePhthalic anhydride reacts exothermically with water. The reactions are sometimes slow, but can become violent when local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases. Undergoes exothmeric nitration with fuming nitric acid-sulfuric acid and may give mixtures of the potentially explosive phthaloyl nitrates or nitrites or their nitro derivatives [Chem. & Ind. 20:790. 1972]. Phthalic anhydride reacts violently with CuO at elevated temperatures [Park, Chang-Man, Richard J. Sheehan. hthalic Acids and Other Benzenepolycarboxylic Acids Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. 2005]. Mixtures of Phthalic anhydride and anhydrous CO2 explode violently if heated [eaflet No. 5, Inst. of Chem., London, 1940].
Health HazardSolid irritates skin and eyes, causing coughing and sneezing. Liquid causes severe thermal burns.
Fire HazardCombustible material: may burn but does not ignite readily. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Tag:Phthalic anhydride(85-44-9) Related Product Information
cis-1,2,3,6-Tetrahydrophthalic anhydride Phthalic anhydride Dibutyl phthalate Potassium phthalimide 3-Nitrophthalic anhydride Maleic anhydride Phthalonitrile Acetic anhydride O-Phthalimide Pathalic acid PHTHALAMIDE phthalic anhydride 4-carbonyl chloride 1,2,4,5-Benzenetetracarboxylic anhydride 3,3',4,4'-Benzophenonetetracarboxylic dianhydride 1,2,4-Benzenetricarboxylic anhydride Hexahydrophthalic anhydride 4,5,6,7-Tetrachloro-1,3-isobenzofurandione 5-Fluoro-1,3-isobenzofurandione