tert-Butylchloro(methyl)phosphine
Tert-Butylchloro(methyl)phosphine (CAS: 25196-13-8, C5H12ClP) is an organophosphorus compound with a molecular weight of 138.58 g/mol. This flammable liquid, exhibiting phosphine characteristics, is primarily utilised as a precursor in chemical synthesis and in catalysis. Its reactive nature necessitates careful handling, particularly due to potential peroxide formation. TSS supplies this compound for research and industrial applications requiring phosphorus-based reagents.

Catalysis
Serves as a ligand precursor or component in homogeneous catalysis due to the presence of the phosphorus atom.
Chemical Synthesis
Utilised as a building block or intermediate in the synthesis of more complex organophosphorus compounds.
Phosphorus Precursors
Acts as a source of phosphorus in the development of novel materials or specialized chemical entities.
| Molecular weight | 138.58 |
|---|---|
| Empirical formula | C5H12ClP |
| Assay | 90% (excluding diethyl ether) |
| Density | 0.940 g/mL at 25 °C |
| Impurities tested | 1-5% tetramethyl butane~1% di-tert-butylmethyl phosphorane~10% diethyl ether |



Hazard statements
- H225Highly flammable liquid and vapour
- H314Causes severe skin burns and eye damage
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
- P501Dispose of contents and container per local regulations
| Flash point | -16 °C / 3.2 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,C,N |
| Risk statements (R) | 11-19-34-50/53-67 |
| Safety statements (S) | 16-26-36/37/39-45-61 |
| Supplemental hazards | May form explosive peroxides. |
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 tert-Butylchloro(methyl)phosphine used for?
+
Tert-Butylchloro(methyl)phosphine is used as a precursor in chemical synthesis and in catalysis, and as a phosphorus precursor in the development of specialised chemical entities.
What are the CAS number and formula for tert-Butylchloro(methyl)phosphine?
+
The CAS number is 25196-13-8 and the empirical formula is C5H12ClP.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies tert-Butylchloro(methyl)phosphine with an assay of 90% (excluding diethyl ether). TSS does not represent this product as USP, BP, or EP grade.
How should tert-Butylchloro(methyl)phosphine be handled safely?
+
Tert-Butylchloro(methyl)phosphine is a Danger substance (H225-H314-H410) that is highly flammable, corrosive, and toxic to aquatic life with long-lasting effects. It may form explosive peroxides. Handle with extreme care in a well-ventilated area, wearing appropriate personal protective equipment, and keep away from ignition sources.
How is tert-Butylchloro(methyl)phosphine packed and shipped?
+
Information regarding specific packing and shipping methods for tert-Butylchloro(methyl)phosphine can be obtained by contacting TSS sales.
How can I request a quote or sample for tert-Butylchloro(methyl)phosphine?
+
To request a quote or sample of tert-Butylchloro(methyl)phosphine, please contact the Tech Serve Solutions sales department through our website or by phone.
▶ 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