1,1,1-Tris(4-hydroxyphenyl)ethane (CAS 27955-94-8): Technical Guide & Applications
Table of Contents
1. Product Overview & Specifications
| Parameter | 1,1,1-Tris(4-hydroxyphenyl)ethane |
|---|---|
| CAS Number | 27955-94-8 |
| Molecular Formula | C20H18O3 |
| Molecular Weight | 306.36 g/mol |
| Appearance | White to off-white crystalline powder |
| Purity | ≥99% (HPLC) |
| Melting Point | 220-225°C |
| Solubility | Soluble in DMF, DMSO; sparingly soluble in water |
2. Key Applications & Use Cases
Primary Industrial Uses:
- Epoxy resin curing agent for aerospace composites
- Flame retardant intermediate in polymer formulations
- Photoresist component in semiconductor manufacturing
- Antioxidant precursor for high-performance lubricants
Functional Advantages:
- Superior thermal stability (up to 300°C continuous service)
- High hydroxyl group density for crosslinking efficiency
- Low volatility in high-temperature processing
3. Performance Comparison
| Property | 1,1,1-Tris(4-hydroxyphenyl)ethane | Bisphenol A | THPE Derivatives |
|---|---|---|---|
| Thermal Degradation Onset | 325°C | 220°C | 290°C |
| Hydroxyl Value (mg KOH/g) | 540-560 | 160-180 | 480-500 |
| Viscosity @ 150°C (cP) | 12-15 | 8-10 | 18-22 |
4. Industry Case Studies
Case Study 1: Aerospace Epoxy Systems
Client: European Composite Manufacturer
Challenge: Required a high-Tg resin for satellite components
Solution: Formulated with 15% 1,1,1-Tris(4-hydroxyphenyl)ethane
Results: Achieved Tg of 210°C (+35% vs. previous formulation)
Case Study 2: Flame Retardant Cable Coating
Client: Japanese Wire & Cable Producer
Challenge: UL94 V-0 compliance at <0.8mm thickness
Solution: 8% additive loading in PVC matrix
Results: Reduced smoke emission by 60% vs. BPA-based systems
5. Safety & Handling Guidelines
- PPE Requirements: Nitrile gloves, dust mask (N95), chemical goggles
- Storage: Keep in airtight container at 15-25°C (59-77°F)
- Shelf Life: 36 months in original packaging
- Emergency Procedures: Rinse with water for eye contact, consult SDS for full protocols
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