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H25775 (Pentafluoroethyl)trimethylsilane, 97%

CAS Number

Stock No. Size Price ($) Quantity Availability
H25775-03 1g 245.00
H25775-06 5g 558.00
H25775-14 25g 1835.00
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(Pentafluoroethyl)trimethylsilane, 97%


Chemical Properties

Formula Weight
Refractive Index
Storage & Sensitivity
Moisture Sensitive. Ambient temperatures.
Miscible with tetrahydrofuran.


(Pentafluoroethyl)trimethylsilane acts as a silicon-based fluorinating reagent for trifluoromethylation of carbonyls and ethylene diamines. It is also employed as a precursor for metal-mediated trifluoromethylation of aromatic, heteroaromatic and vinyl substrates.


Moisture sensitive. Incompatible with oxidizing agents.

Literature References

Jin, G.; Zhang, X.; Fu, D.; Dai, W.; Cao, S. Mild and metal-free trifluoromethylation and pentafluoroethylation of gem-difluoroalkenes with TMSCF3 and TMSCF2CF3. Tetrahedron 2015, 71 (41), 7892-7899.

O’Duill, M.; Dubost, E.; Pfeifer, L.; Gouverneur, V. Cross-Coupling of [2-Aryl-1,1,2,2-tetrafluoroethyl](trimethyl)silanes with Aryl Halides. Org. Lett. 2015, 17 (14), 3466-3469.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H315-H319-H335

Highly flammable liquid and vapour. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P210-P233-P235-P240-P241-P242-P243-P261-P264b-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P363-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Keep cool. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


  • A18495

    Pimelic acid, 98+%
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  • 42388

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