Ethyltrimethylammonium iodide
Ethyltrimethylammonium iodide (CAS: 51-93-4) is a quaternary ammonium salt with the molecular formula CH3CH2N(I)(CH3)3 and a molecular weight of 215.08 g/mol. This compound serves as a valuable reagent in chemical synthesis, often employed as a phase transfer catalyst to facilitate reactions between immiscible phases. Its properties make it useful for specific organic transformations.

Phase Transfer Catalysis
Ethyltrimethylammonium iodide functions as a phase transfer catalyst, enabling reactions between reactants residing in different, immiscible phases (e.g., aqueous and organic). This enhances reaction rates and yields by transporting reactive species across phase boundaries.
Organic Synthesis Reagent
This compound is utilised in various organic synthetic procedures. It can act as an alkylating agent or be involved in reactions requiring a quaternary ammonium species, contributing to the construction of complex organic molecules.
Precursor in Chemical Research
As a well-defined chemical entity, Ethyltrimethylammonium iodide is employed in research laboratories to explore new synthetic methodologies and to study reaction mechanisms involving ammonium salts.
| Molecular weight | 215.08 |
|---|---|
| Linear formula | CH3CH2N(I)(CH3)3 |
| Assay | ≥99.0% |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Ethyltrimethylammonium iodide used for?
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Ethyltrimethylammonium iodide is primarily used as a phase transfer catalyst and a reagent in general chemical synthesis and research laboratories.
What are the CAS number and formula for Ethyltrimethylammonium iodide?
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The CAS number is 51-93-4, and the molecular formula is CH3CH2N(I)(CH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ethyltrimethylammonium iodide with an assay of ≥99.0%. This product is intended for research and chemical synthesis and is not supplied as USP, BP, EP, or pharmacopoeia grade.
What are the safety precautions for handling Ethyltrimethylammonium iodide?
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Ethyltrimethylammonium iodide is classified as a Warning. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask type N95, eyeshields, and gloves, should be worn. Ensure adequate ventilation.
Is Ethyltrimethylammonium iodide a controlled substance?
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Based on the provided data, there is no indication that Ethyltrimethylammonium iodide is a controlled substance.
How can I request a sample or quote for Ethyltrimethylammonium iodide?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing the product name and CAS number.
How is Ethyltrimethylammonium iodide packed and shipped?
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Ethyltrimethylammonium iodide is packed and shipped in compliance with international regulations for chemical transport. Specific packaging details can be provided upon request.
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