2,2,2-Trichloro-1,1-dimethylethyl chloroformate
2,2,2-Trichloro-1,1-dimethylethyl chloroformate (CAS 66270-36-8) is a chemical compound with the molecular formula ClCO2C(CH3)2CCl3 and a molecular weight of 239.91. As an acid halide and organic building block, it serves as a valuable reagent in chemical synthesis. This compound is typically supplied for research and development purposes, offering a specific functionality for complex molecular construction.
- IUPAC
- β,β,β-Trichloro-tert-butoxycarbonyl chloride,β,β,β-Trichloro-tert-butyl chloroformate,TCBoc-chloride
- Synonyms
- β,β,β-Trichloro-tert-butoxycarbonyl chlorideβ,β,β-Trichloro-tert-butyl chloroformateTCBoc-chloride1-dimethylethyl chloroformate,66270-36-8, ClCO2C(CH3)2CCl3

Organic Synthesis Reagent
This chloroformate derivative acts as a protecting group or a functionalisation agent in organic synthesis. Its unique structure allows for selective introduction of the 2,2,2-trichloro-1,1-dimethylethoxycarbonyl (TCBoc) group.
Building Block for Complex Molecules
Utilised in the construction of more intricate chemical structures, 2,2,2-Trichloro-1,1-dimethylethyl chloroformate provides a specific handle for further synthetic transformations.
Specialty Chemical Intermediate
Serves as an intermediate in the synthesis of fine chemicals and potentially pharmaceutical precursors, leveraging its reactive chloroformate moiety.
| Molecular weight | 239.91 |
|---|---|
| Linear formula | ClCO2C(CH3)2CCl3 |
| Assay | 96% |
| Boiling point | 83-84 °C/14 mmHg(lit.) |
| Solubility | ethanol: soluble10%, clear, colorless |
| Storage temperature | 2-8°C |
| Melting point | 28-30 °C(lit.) |


Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- 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
- P301IF SWALLOWED
- 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 2928 6.1/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25-34 |
| 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 2,2,2-Trichloro-1,1-dimethylethyl chloroformate used for?
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2,2,2-Trichloro-1,1-dimethylethyl chloroformate is primarily used as a reagent in organic synthesis, serving as a building block for complex molecules and as an intermediate in the synthesis of specialty chemicals.
What is the CAS number and formula for 2,2,2-Trichloro-1,1-dimethylethyl chloroformate?
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The CAS number is 66270-36-8 and the linear formula is ClCO2C(CH3)2CCl3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of 96%. It is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 2,2,2-Trichloro-1,1-dimethylethyl chloroformate be handled safely?
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This compound is classified as dangerous, with hazards including acute toxicity (oral, dermal, inhalation) and severe skin burns and eye damage. Appropriate personal protective equipment, such as eyeshields, face shields, gloves, and suitable respiratory protection, must be used in a well-ventilated area. Refer to the safety data sheet for detailed handling instructions.
How is this chemical packed and exported?
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Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, adhering to all necessary regulations for packing and shipping hazardous materials.
How can I request a sample or quote for 2,2,2-Trichloro-1,1-dimethylethyl chloroformate?
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Please contact our sales team through our website or by phone to request a sample or a quotation for this product.
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