Trimethylphenylammonium chloride
Trimethylphenylammonium chloride (CAS: 138-24-9) is a chemical compound with the linear formula (CH3)3N(Cl)C6H5 and a molecular weight of 171.67 g/mol. It is classified as an ammonium salt and serves as a valuable reagent in chemical synthesis. Its properties make it particularly useful as a phase transfer catalyst, facilitating reactions between different phases. Tech Serve Solutions supplies this compound for research and industrial applications.
- IUPAC
- Phenyltrimethylammonium chloride
- Synonyms
- Phenyltrimethylammonium chloride

Phase Transfer Catalysis
Trimethylphenylammonium chloride acts as an effective phase transfer catalyst, enabling reactions between reactants residing in immiscible phases. This is crucial for improving reaction rates and yields in organic synthesis.
Chemical Synthesis Reagent
As a synthetic reagent, this compound is employed in various organic transformations. Its quaternary ammonium structure allows it to participate in or facilitate diverse chemical reactions.
Laboratory Research
This chemical is utilised in research laboratories for exploring new synthetic pathways and developing novel compounds. Its availability in a high-purity grade supports precise experimental outcomes.
| Molecular weight | 171.67 |
|---|---|
| Linear formula | (CH3)3N(Cl)C6H5 |
| Assay | ≥97.0% (AT) |
| Grade | purum |
| Solubility | H2O: soluble0.1 g/mL, clear |
| Melting point | 246-248 °C (dec.)(lit.) |

Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P312Call a POISON CENTER if you feel unwell
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | T |
| Risk statements (R) | 24/25 |
| Safety statements (S) | 53-25-39-45 |
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 Trimethylphenylammonium chloride used for?
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Trimethylphenylammonium chloride is primarily used as a phase transfer catalyst and a reagent in chemical synthesis. It is also utilised in laboratory research for developing new synthetic methodologies.
What is the CAS number and formula for Trimethylphenylammonium chloride?
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The CAS number for Trimethylphenylammonium chloride is 138-24-9, and its linear formula is (CH3)3N(Cl)C6H5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethylphenylammonium chloride with a purity of ≥97.0% (AT), designated as purum grade. We do not represent this product as USP, BP, or EP grade.
How should Trimethylphenylammonium chloride be handled?
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Trimethylphenylammonium chloride is classified as dangerous. It is toxic if swallowed and toxic in contact with skin (H301-H311). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and a P2 respirator, must be used. Handle in a well-ventilated area and avoid dust formation.
How is this chemical packed and shipped?
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Trimethylphenylammonium chloride is packed and shipped according to international regulations for hazardous materials. As a global supplier and exporter, TSS ensures compliance with all relevant shipping and export requirements.
How can I request a sample or quote?
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To request a sample or a quotation for Trimethylphenylammonium chloride, please contact our sales team through the website or by phone. Provide your specific requirements, including quantity and destination.
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