Fine chemicals are produced in multipurpose plants through multistep batch synthesis, often involving aggressive reagents, elevated temperatures, and strict purity requirements. Unlike bulk chemical plants with dedicated equipment, fine chemical facilities must accommodate rapid changeover between products with vastly different chemical profiles.
The Multipurpose Challenge:
A typical fine chemical or CDMO facility may handle:
• Strong mineral acids: HCl, H₂SO₄, HNO₃, HBr for acidification, activation, and hydrolysis reactions
• Caustic solutions: NaOH, KOH for neutralization, saponification, and base-catalyzed reactions
• Organic solvents: THF, DCM, DMF, DMSO, acetonitrile, methanol, toluene as reaction media
• Specialty reagents: Grignard reagents, organolithiums, coupling catalysts
• Oxidizers and reducers: H₂O₂, NaBH₄, LiAlH₄ for redox transformations
This chemical diversity means equipment must resist virtually everything—a requirement only fluoropolymers can meet.
Why PFA for Fine Chemicals:
PFA delivers universal chemical resistance essential for multipurpose operations:
• Complete resistance to mineral and organic acids at all concentrations
• Unaffected by caustic solutions and amines
• Resistant to chlorinated solvents, polar aprotic solvents, and aromatic hydrocarbons
• Handles oxidizing and reducing agents without degradation
• Non-contaminating: No extractables or leachables that could affect product purity
• Easy cleaning: Smooth, non-porous surface enables thorough cleaning between batches
• Temperature capability supports both cryogenic (-40°C) and elevated temperature (+180°C) reactions
• cGMP compatible: USP Class VI compliant materials for pharmaceutical applications
Batch Changeover Advantage:
Unlike PTFE (which can absorb certain chemicals), PFA's non-porous surface releases completely during cleaning—critical for preventing cross-contamination between product campaigns. This enables rapid changeover without residue carryover that could affect product quality or require extensive validation.