Bisphenol A

Bisphenol A

CAS Number:80‑05‑7

Synonyms:2,2-bis(4‑hydroxyphenyl)propane; BPA; Parabis

Chemical Formula:C₁₅H₁₆O₂

Molecular Weight:228.29 g/mol

Product Introduction

A white solid—flakes or crystalline—with a mild phenolic odor. BPA is primarily used as a monomer in the production of polycarbonate plastics (≈65–70%), epoxy and vinyl ester resins (25–30%), and as a component in thermal paper receipts and dental sealants. Concerns over its endocrine-disrupting effects and links to health issues have prompted regulatory scrutiny .

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Physical & Chemical Properties

Property Value
Appearance White crystalline flakes/powder; mild phenolic odor
Density @ 25 °C ~1.20–1.22 g/cm³
Melting Point ~155–158 °C
Boiling Point ~250–360 °C (decomposes)
Solubility Slight in water (~0.12–0.3 g/L); soluble in organics (acetone, toluene, etc.)
Log P ~3.41
Vapor Pressure @25 °C Negligible
Flash Point ~227 °C
Autoignition Temp ~510 °C

Applications

  • Polycarbonate plastics: durable, high-heat-resistant polymers
  • Epoxy/vinyl ester resins: coatings, adhesives, laminates
  • Thermal paper & sealants: color developers in receipts, dental materials

Safety & Handling

  • Harmful if swallowed, inhaled, or absorbed (GHS: H302/H312/H332). Causes serious eye damage (H318) and is harmful to aquatic life (H412). Irritant—dust may irritate eyes/respiratory tract. On contact with acids, it liberates toxic gases. Store sealed in cool, dry place (<15 °C), away from acids; use PPE and ventilation

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