Terephthaloyl Chloride CAS No. 100-20-9
Agrochemicals 2025-03-02
Terephthaloyl Chloride
CAS No.: 100-20-9 | EC No.: 202-829-5
1. Chemical Identification
| Property | Specification |
|---|---|
| IUPAC Name | Benzene-1,4-dicarbonyl dichloride |
| Molecular Formula | C₈H₄Cl₂O₂ |
| Molecular Weight | 203.02 g/mol |
| Appearance | White to off-white flakes |
| Melting Point | 79-81°C |
| Boiling Point | 266°C |
| Density | 1.34 g/cm³ |
| pH | <0.5 (aqueous solution) |
Synonyms:
TPC, Terephthaloyl dichloride, 1,4-Benzenedicarbonyl chloride
2. Key Applications
Polymer Industry
- High-Performance Fibers:
✓ Aramid fibers (Kevlar®-type)
✓ Flame-retardant textiles
✓ Nylon reinforcement - Specialty Plastics:
✓ Heat-resistant polyamides
✓ Engineering thermoplastics
Chemical Synthesis
- Pharmaceutical Intermediates:
✓ UV absorber production
✓ Drug synthesis - Agrochemicals:
✓ Pesticide intermediate
Industrial Applications
- Dye and pigment manufacturing
- Crosslinking agent for resins
3. Product Advantages
✔ High Reactivity – Excellent diacyl chloride for polycondensation
✔ Thermal Stability – Suitable for high-temperature processing
✔ Fiber Reinforcement – Enhances mechanical properties
4. Physical & Chemical Properties
- Solubility:
- Reacts with water/alcohols
- Soluble in chlorinated solvents
- Moisture Sensitivity:
- Hydrolyzes rapidly in moist air
5. Handling & Storage
| Parameter | Requirement |
|---|---|
| Storage Temp | <25°C (under inert gas) |
| Packaging | 25kg moisture-proof drums |
| Shelf Life | 12 months |
| Special Notes | Handle under dry nitrogen |
6. Safety Information
Danger!
- H314: Causes severe skin burns and eye damage
- H335: May cause respiratory irritation
- H290: May be corrosive to metals
Protective Measures:
- P280: Wear acid-resistant gloves/face shield
- P303+P361+P353: Skin contact wash procedure
- P305+P351+P338: Eye contact rinse protocol
7. Quality Specifications
- Purity: ≥99% (GC)
- Acid Content: ≤0.5%
- Iron Content: ≤10 ppm
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