Phthalic Anhydride with CAS 85-44-9, PA

Phthalic Anhydride
 
Chemical Formula: C₆H₄(CO)₂O
CAS Number: ******9
 
Description:
Phthalic Anhydride (PA) is a white crystalline compound with a slightly pungent odor. It is an organic compound derived from phthalic acid and is widely used as an important intermediate in the chemical industry. PA is highly reactive due to its anhydride group, making it versatile for various industrial applications.
 
Key Properties:
               •             Appearance: White flakes, molten liquid, or crystalline solid.
               •             Melting Point: **1°C (**8°F)
               •             Boiling Point: **5°C (**3°F)
               •             Solubility: Insoluble in water but reacts with water to form phthalic acid; soluble in organic solvents like benzene and alcohols.
Applications:
               1.            Plasticizers Production:
Phthalic anhydride is a key raw material for producing phthalate plasticizers, such as dioctyl phthalate (DOP), which enhance the flexibility and durability of PVC and other polymers.
               2.            Resins Manufacturing:
It is extensively used in the synthesis of alkyd resins for paints and coatings, as well as unsaturated polyester resins for fiberglass-reinforced plastics.
               3.            Dyes and Pigments:
A precursor for manufacturing various dyes, pigments, and chemical intermediates.
               4.            Pharmaceuticals and Agrochemicals:
Used in synthesizing active ingredients for pharmaceuticals and agrochemical products.
               5.            Other Applications:
               •             Flame retardants.
               •             Pesticide formulations.
               •             Food preservatives (in limited quantities).
 
Storage and Handling:
Phthalic anhydride should be stored in a cool, dry, and well-ventilated area. Avoid exposure to moisture, as it can react with water to form corrosive phthalic acid. Use proper personal protective equipment (PPE) when handling to avoid irritation to the skin, eyes, and respiratory system.
 
Packaging:
Typically available in bags, bulk, or molten form. The packaging options depend on the industrial requirements and the transportation method.