Chlorodiethylphosphine
Chlorodiethylphosphine (CAS: 686-69-1), with the empirical formula C4H10ClP and a molecular weight of 124.55 g/mol, is a key organophosphorus compound. It serves as a valuable building block in organic synthesis and is recognised for its utility in catalysis. This compound is typically supplied as a technical grade material with an assay of 90%, suitable for various industrial and research applications.
- IUPAC
- Diethylchlorophosphine,Diethylphosphinous chloride,Et2PCl
- Synonyms
- DiethylchlorophosphineDiethylphosphinous chlorideEt2PCl

Organic Synthesis
Chlorodiethylphosphine acts as a versatile intermediate in the synthesis of more complex organophosphorus compounds. It can be employed in reactions to introduce the diethylphosphino group into various organic frameworks.
Catalyst Precursor
This compound can serve as a precursor for preparing specialised phosphine ligands used in homogeneous catalysis. These ligands are crucial for facilitating and controlling a wide range of chemical transformations.
Phosphorus Chemistry
It is a useful reagent for researchers exploring phosphorus-based chemistry. Its reactivity allows for the development of novel phosphorus-containing materials and molecules.
| Molecular weight | 124.55 |
|---|---|
| Empirical formula | C4H10ClP |
| Assay | 90% |
| Grade | technical grade |
| Boiling point | 133-134 °C(lit.) |
| Density | 1.023 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.475(lit.) |



Hazard statements
- H225Highly flammable liquid and vapour
- H260In contact with water releases flammable gases
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P223Do not allow contact with water
- P231Handle under inert gas
- P261Avoid breathing dust, fume, gas or vapours
- P370In case of fire
- P422
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 19 °C / 66.2 °F |
| Transport (UN / ADR) | UN 3129 8(4.3) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,C |
| Risk statements (R) | 11-14-34-36/37 |
| Safety statements (S) | 16-26-36/37/39-45 |
| 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 Chlorodiethylphosphine used for?
+
Chlorodiethylphosphine is used as an intermediate in organic synthesis and as a precursor for catalyst ligands, particularly in phosphorus chemistry and catalysis.
What are the CAS number and formula for Chlorodiethylphosphine?
+
The CAS number for Chlorodiethylphosphine is 686-69-1, and its empirical formula is C4H10ClP.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Chlorodiethylphosphine as technical grade with an assay of 90%. We do not represent this product as USP, BP, or EP grade.
How should Chlorodiethylphosphine be handled safely?
+
Chlorodiethylphosphine is flammable and reacts violently with water, causing severe skin burns and eye damage. It may also cause respiratory irritation. Handle with extreme caution in a well-ventilated area, wearing appropriate personal protective equipment, and keep away from water and ignition sources.
How is Chlorodiethylphosphine packed and shipped?
+
Chlorodiethylphosphine is packed and shipped according to stringent safety regulations for hazardous materials. Please contact us for specific details regarding international export.
How can I request a quote or sample?
+
To request a quote or a sample of Chlorodiethylphosphine, please contact our sales team through the website or by phone, providing your specific requirements.
▶ Related products

Benzeneruthenium(II) chloride dimer
Ru2(C6H6)2Cl4
Catalysis & Inorganic
Benzoylferrocene
C17H14FeO
Catalysis & Inorganic
Benzyldiphenylphosphine
C6H5CH2P(C6H5)2
Catalysis & Inorganic
Beryllium
Be
Catalysis & Inorganic
Beryllium oxide
BeO
Catalysis & Inorganic![Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer — chemical structure, CAS 12257-42-0; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12257-42-0.png&w=3840&q=75)
Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer
Catalysis & Inorganic
![Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo — chemical structure, CAS 1228149-03-8; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1228149-03-8.png&w=3840&q=75)
Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo
1-d:1′
Catalysis & Inorganic![Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride (C16H20ClN3Ni) — chemical structure, CAS 1033772-47-2; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1033772-47-2.png&w=3840&q=75)
Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride
C16H20ClN3Ni
Catalysis & Inorganic▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis