Terephthaloyl chloride
Terephthaloyl chloride (CAS: 100-20-9), with the molecular formula C₆H₄-1,4-(COCl)₂, is a crucial organic building block. This acid halide is essential in chemical synthesis, particularly for creating advanced materials. Its primary application involves the thermal cyclotrimerization of dicyanate compounds for liquid crystalline thermosets, showcasing its utility in polymer science and material development.
- Synonyms
- 4-(COCl)2Terephthalic acid dichloridep-Phthaloyl dichloride
Synthesis of Liquid Crystalline Thermosets
Terephthaloyl chloride serves as a key reactant in the synthesis of liquid crystalline thermosets. It is used in the thermal cyclotrimerization of dicyanate compounds derived from ring-substituted bis(4-hydroxyphenyl) terephthalates, enabling the creation of advanced polymeric materials.
Polymer and Material Science
As a difunctional acyl chloride, it is invaluable in polymer chemistry for introducing terephthaloyl units into polymer backbones. This contributes to materials with enhanced thermal stability and specific liquid crystalline properties.
Organic Synthesis Intermediate
Terephthaloyl chloride acts as a versatile intermediate in organic synthesis. Its reactive acid chloride groups readily participate in reactions like esterification and amidation, facilitating the construction of complex organic molecules.
| Molecular weight | 203.02 |
|---|---|
| Linear formula | C6H4-1,4-(COCl)2 |
| Assay | ≥99% |
| Boiling point | 266 °C(lit.) |
| Solubility | ethanol: soluble100 mg/mL, clear, colorless |
| Vapour pressure | 0.02 mmHg (25 °C) |
| Vapour density | 7 (vs air) |
| Melting point | 79-81 °C(lit.) |
| Application | Terephthaloyl chloride was used in the synthesis of liquid crystalline thermosets by thermal cyclotrimerization of dicyanate compounds of ring substituted bis(4-hydroxyphenyl) terepthalates1. |
Hazard statements
- H314Causes severe skin burns and eye damage
- H331Toxic if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2923 6.1(8) / PGI |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23-35 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Terephthaloyl chloride used for?
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Terephthaloyl chloride is primarily used in the synthesis of liquid crystalline thermosets via thermal cyclotrimerization of dicyanate compounds. It also serves as a valuable intermediate in various organic synthesis and polymer science applications.
What is the CAS number and formula for Terephthaloyl chloride?
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The CAS number for Terephthaloyl chloride is 100-20-9, and its linear formula is C₆H₄-1,4-(COCl)₂.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Terephthaloyl chloride with an assay of ≥99%. This product is supplied for laboratory and industrial research purposes. We do not represent this chemical as USP, BP, EP, or other pharmacopoeia grades.
How should Terephthaloyl chloride be handled safely?
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Terephthaloyl chloride is a dangerous substance, indicated by the GHS05 and GHS06 symbols and the 'Danger' signal word. It causes severe skin burns and eye damage (H314) and is toxic if inhaled (H331). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection (type N100 US/P3 EN143), is essential. Handle only in a well-ventilated area or under a fume hood.
Can I request a sample or quote for Terephthaloyl chloride?
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Yes, you can easily request a sample or a quote for Terephthaloyl chloride. Please contact our sales team through the website or your designated account manager for prompt assistance.
How is Terephthaloyl chloride packed and shipped?
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Terephthaloyl chloride is carefully packed according to international shipping regulations for hazardous materials (UN 2923, 6.1(8)/PGI). We export globally, ensuring compliance with all relevant transport and customs requirements.
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