Potassium ethoxide
Potassium ethoxide (CAS: 917-58-8, Formula: KOC2H5, MW: 84.16) is a strong base and a versatile organometallic compound. Supplied by Tech Serve Solutions as a 24 wt.% solution in ethanol with an assay of 95%, it is primarily used as a reagent in organic synthesis and in materials science applications. Its reactive nature necessitates careful handling. This compound is an indispensable tool for various chemical transformations.

Organic Synthesis Reagent
Potassium ethoxide serves as a potent base in numerous organic reactions, including condensation, alkylation, and dehydrohalogenation. Its strong basicity facilitates the formation of carbanions and other reactive intermediates essential for complex molecule construction.
Materials Science Precursor
In materials science, potassium ethoxide is employed as a precursor for the deposition of thin films and the synthesis of various materials. It is particularly relevant in micro/nanoelectronics for solution deposition processes.
Catalysis
As a strong alkoxide base, it can function as a catalyst in specific polymerisation reactions and other base-catalysed transformations, influencing reaction rates and product selectivity.
| Molecular weight | 84.16 |
|---|---|
| Linear formula | KOC2H5 |
| Assay | 95% |
| Density | 0.894 g/mL at 25 °C |
| Refractive index | n20/D 1.39 |
| Concentration | 24 wt. % in ethanol |


Hazard statements
- H251Self-heating; may catch fire
- H314Causes severe skin burns and eye damage
Precautionary statements
- P235Keep cool
- 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 3206 4.2/PG 2 |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | F,C |
| Risk statements (R) | 11-14-34 |
| Safety statements (S) | 8-16-26-43-45 |
| Supplemental hazards | Reacts violently with water. |
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 Potassium ethoxide used for?
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Potassium ethoxide is primarily used as a strong base in organic synthesis for reactions like condensation and alkylation, and as a precursor in materials science for applications such as thin film deposition in microelectronics.
What are the CAS number and formula for Potassium ethoxide?
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The CAS number for Potassium ethoxide is 917-58-8 and its chemical formula is KOC2H5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium ethoxide with an assay of 95%. This product is typically considered a technical or research grade; TSS does not represent it as USP, BP, or EP grade.
How should Potassium ethoxide be handled safely?
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Potassium ethoxide is a highly reactive substance. It is labelled with Danger (GHS02, GHS05), causes severe skin burns and eye damage (H314), and is self-reactive (H251), heating if confined. It reacts violently with water. Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, must be used. Ensure handling in a well-ventilated area, away from water and incompatible materials.
Is Potassium ethoxide a controlled substance?
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Based on the provided data, there is no indication that Potassium ethoxide (CAS: 917-58-8) is a specifically controlled substance in major regulatory frameworks. However, users should always verify local regulations.
How is Potassium ethoxide packed and shipped?
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Potassium ethoxide is shipped as UN 3206, hazard class 4.2, packing group II, reflecting its self-reactive nature. It is supplied as a solution in ethanol.
How can I request a sample or quote for Potassium ethoxide?
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To request a sample or a quote for Potassium ethoxide, please contact our sales department through the website or by phone, providing your specific requirements and shipping details.
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