3,3-Dimethyl-2-butanone
3,3-Dimethyl-2-butanone (CAS 75-97-8), also known as tert-Butyl methyl ketone, is an organic compound with the linear formula CH3COC(CH3)3 and a molecular weight of 100.16 g/mol. This ketone serves as a valuable building block in organic synthesis, particularly within the pharmaceutical and fine chemical industries. Its unique structure makes it a useful intermediate for creating more complex molecules and functional groups.
- IUPAC
- α,α,α-Trimethylacetone,tert-Butyl methyl ketone,Pinacolone
- Synonyms
- tert-Butyl methyl ketonePinacoloneα,α,α-Trimethylacetone

Organic Synthesis Intermediate
3,3-Dimethyl-2-butanone is frequently employed as a versatile intermediate in various organic synthesis pathways. It is used in the preparation of diverse chemical entities and functionalised molecules.
Pharmaceutical Research and Development
This compound finds application in the research and development of new pharmaceutical agents. Its structure can be incorporated into novel drug candidates during the synthesis process.
Fine Chemical Manufacturing
As a key building block, it is utilised in the manufacturing of fine chemicals. Its chemical properties lend themselves to the construction of complex organic structures.
| Molecular weight | 100.16 |
|---|---|
| Linear formula | CH3COC(CH3)3 |
| Assay | 98% |
| Boiling point | 106 °C(lit.) |
| Density | 0.801 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.396(lit.) |


Hazard statements
- H225Highly flammable liquid and vapour
- H302Harmful if swallowed
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 5 °C / 41 °F |
| Transport (UN / ADR) | UN 1224BE 3 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | F,Xn |
| Risk statements (R) | 11-22 |
| Safety statements (S) | 9-16-29-33 |
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 3,3-Dimethyl-2-butanone used for?
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3,3-Dimethyl-2-butanone (CAS 75-97-8) is primarily used as a building block and intermediate in organic synthesis, particularly in the pharmaceutical and fine chemical industries for creating more complex molecules.
What is the CAS number and chemical formula for 3,3-Dimethyl-2-butanone?
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The CAS number for 3,3-Dimethyl-2-butanone is 75-97-8, and its linear chemical formula is CH3COC(CH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,3-Dimethyl-2-butanone with an assay of 98%. This product is supplied for research and general laboratory use and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 3,3-Dimethyl-2-butanone be handled safely?
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3,3-Dimethyl-2-butanone is a flammable liquid and vapour (H225) and harmful if swallowed (H302). It requires careful handling in well-ventilated areas, away from ignition sources, using appropriate personal protective equipment including eyeshields, gloves, and respiratory protection as specified in the safety data sheet.
Is 3,3-Dimethyl-2-butanone packed and shipped internationally by TSS?
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Yes, Tech Serve Solutions exports and ships 3,3-Dimethyl-2-butanone globally. It is classified for transport under UN 1224, Class 3, Packing Group II.
How can I request a quote or sample of 3,3-Dimethyl-2-butanone?
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To request a quote or a sample of 3,3-Dimethyl-2-butanone, please contact our sales team via the website or direct email, providing your specific requirements and delivery details.
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