Chemical Name: Hexahydrophthalic Anhydride (HHPA)

CAS Number: 85-42-7

Molecular Formula: C₈H₁₀O₃

Properties:

• Appearance: White to off-white crystalline solid or flakes.
• Melting Point: Approximately 33-35°C.
• Boiling Point: Decomposes before boiling.
• Solubility: Slightly soluble in water; highly soluble in organic solvents such as ethanol, acetone, and benzene.

Applications:

• Epoxy Resin Curing: HHPA is widely used as a hardener in the production of epoxy resins, which are employed in coatings, adhesives, and composites.
• Plasticizers and Modifiers: It modifies properties of plastics and rubbers, improving durability and flexibility.
• Chemical Synthesis: Serves as a reactive intermediate in the synthesis of various organic compounds.

Safety Information:

• Hazards: Can cause skin irritation and allergic reactions. Exposure may result in respiratory irritation.
• Precautions: Use with adequate ventilation, wear protective gloves, and eye/face protection.
• First Aid Measures: In case of contact, immediately flush skin or eyes with plenty of water. If inhaled, move to fresh air and seek medical attention if symptoms persist.

Regulatory Information: Listed under various international chemical safety regulations. Users must comply with local environmental and safety laws.