Phthalic anhydride

CAS 85-44-9

Phthalic anhydride CAS 85-44-9

Chemical Properties Of Phthalic anhydride CAS 85-44-9

  1. Phthalic anhydride (MF:C8H4O3, MW:148.12, EINECS:201-607-5), a white needle-like crystal with a slight odor, is an important organic chemical raw material. It is a universal anti-scorching agent for natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber and nitrile rubber, which can prevent scorching and improve operational safety.
  2. Phthalic anhydride is also a widely used anhydride type epoxy resin curing agent. It is low in price and generates little heat during curing, making it particularly suitable for large castings and laminated products. The cured product has excellent electrical properties and mechanical strength, and also has good chemical resistance (but poor alkali resistance), with a heat deflection temperature of 110 to 147℃.

 

Product Description Of Phthalic anhydride CAS 85-44-9

Melting point131-134°C(lit.)
Boiling point284°C(lit.)
Density1,53g/cm ³
Vapor pressure<0.01mmHg(at 20°C)
Refractive index1.4500(estimate)
Fp152°C
Solubility6g/l (Slow decomposition)
OdorA typical suffocating smell
Water solubility6g/L(20 ° C)
SensitivityMoisture Sensitive

Product Application Of Phthalic anhydride CAS 85-44-9

  1. Phthalic acid anhydride is a key raw material for the production of alkyd resins. For instance, alkyd resins are widely used in the coating industry and can be used to manufacture various types of civil and industrial paints, such as furniture paint and automotive paint, which can endow the paint film with excellent decorative and protective properties.
  2. Phthalic anhydride is indispensable in the synthesis of unsaturated polyester resin. It is often used to manufacture fiberglass reinforced plastic products, such as fiberglass reinforced plastic pipes, plates, automotive parts, ship hulls, etc. Due to its advantages of high strength, light weight and corrosion resistance, it is widely applied in construction, transportation, aerospace and other fields.
  3. Phthalic anhydride is the main raw material for the production of phthalate plasticizers. Phthalate plasticizers are the most commonly used plasticizers in plastic processing, such as DOP, DBP, etc. It is widely used in polyvinyl chloride (PVC) plastic products, such as plastic films, artificial leather, wire and cable sheaths, plastic pipes, etc.
  4. Phthalic anhydride can be used to synthesize anthraquinone dye intermediates and is widely applied in the textile printing and dyeing industry.
  5. Phthalic acid anhydride is also involved in the synthesis of some organic pigments, such as in the production process of phthalocyanine blue, phthalocyanine green and other pigments.
    Phthalic anhydride also has certain applications in the pharmaceutical industry. It can be used as an intermediate in drug synthesis to produce some drug molecules with specific pharmacological activities.
  6. Phthalic anhydride is also used in the synthesis of some spices.
    In agricultural production, Phthalic acid anhydride is used as an intermediate in the synthesis of some pesticides, helping to prepare pesticide products with functions such as insecticidal and bactericidal effects.

 

Packaging Method Of Phthalic anhydride CAS 85-44-9
Phthalic anhydride CAS 85-44-9
Bagged product shipping diagram 1
Sodium Acetate Cas 127-09-3
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