Tech Serve Solutions

Terephthaloyl chloride

CAS 100-20-9C6H4-1Chemical Synthesis

Terephthaloyl chloride (CAS 100-20-9), molecular formula C6H4-1, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.

Synonyms
4-(COCl)2
Terephthaloyl chloride
Acid HalidesBuilding BlocksCarbonyl CompoundsChemical SynthesisOrganic Building Blocks
01 /Properties
Molecular weight203.02
Linear formulaC6H4-1,4-(COCl)2
Assay≥99%
Boiling point266 °C(lit.)
Solubilityethanol: soluble100 mg/mL, clear, colorless
Vapour pressure0.02 mmHg (25 °C)
Vapour density7 (vs air)
Melting point79-81 °C(lit.)
ApplicationTerephthaloyl chloride was used in the synthesis of liquid crystalline thermosets by thermal cyclotrimerization of dicyanate compounds of ring substituted bis(4-hydroxyphenyl) terepthalates1.
02 /Safety & handling
Corrosive
Corrosive
Toxic
Toxic
Danger

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 equipmentEyeshields, 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.

03 /Identifiers & registry
CAS number
100-20-9
MDL number
MFCD00000693
PubChem substance
24847435
Beilstein registry
607796
04 /Quality & supply

Documentation

Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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.

05 /Frequently asked questions

What is Terephthaloyl chloride?

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Terephthaloyl chloride (CAS 100-20-9), molecular formula C6H4-1, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.

What grades of Terephthaloyl chloride does Tech Serve Solutions supply?

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Tech Serve Solutions supplies Terephthaloyl chloride in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.

What is the CAS number and molecular formula of Terephthaloyl chloride?

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Terephthaloyl chloride has CAS number 100-20-9 and molecular formula C6H4-1. Full specifications appear in the table above and in the Certificate of Analysis.

What is the typical minimum order quantity and lead time for Terephthaloyl chloride?

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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.

Do you provide a Certificate of Analysis (CoA) with each shipment?

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Yes. Every batch of Terephthaloyl chloride ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.

How should Terephthaloyl chloride be stored?

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Store Terephthaloyl chloride in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.

What is Terephthaloyl chloride used for?

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Terephthaloyl chloride is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.

How do I request a quote for Terephthaloyl chloride?

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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.

Need Terephthaloyl chloride in a specific grade or volume?

Request a quote