4,4-dimethylpent-2-yne
Also known as: (tert-C4H9)CequivCCH3, 1-tert-butyl-2-methylacetylene, 2,2-dimethyl-3-pentyne, 2-Pentyne,4,4-dimethyl, 4,4-DIMETHYL-2-PENTYNE, 4,4-DIMETHYL-2-PENTYNE, 98%,, 4,4-DIMETHYL-2-PENTYNE, 98%4,4-DIMETHYL-2-PENTYNE, 98%4,4-DIMETHYL-2-PENTYNE, 98%4,4-DIMETHYL-2-PENTYNE, 98%, 4,4-Dimethyl-2-pentyne, 4,4-Dimethyl-2-pentyne, 97+%, 4,4-dimethyl-1-pentyne, 4,4-dimethyl-pent-2-yne, MFCD00041613, T-BUTYLMETHYLACETYLENE, TERT-BUTYLMETHYLACETYLENE, TIMTEC-BB SBB008719, methyl-t-Bu-acetylene, t-Butylmethylacetylene, min. 98%
4,4-dimethylpent-2-yne (CAS 999-78-0) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H12 and a molecular weight of 96.17020 g/mol. Key properties include a melting point of -82.4ºC, a boiling point of 83ºC and a density of 0.718. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 999-78-0
- Jingsj CID
- J-31109-1
- Molecular Formula
- C7H12
- Molecular Weight
- 96.17020 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -82.4ºC |
|---|---|
| Boiling Point | 83ºC |
| Density | 0.718 |
| Exact Mass | 96.09390 |
| LogP | 2.05580 |
| Refractive Index | 1.4071 |
Customs & Trade Information
| HS Code | 2901299090 |
|---|---|
| Summary | 2901299090 unsaturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4,4-dimethylpent-2-yne?
The CAS number of 4,4-dimethylpent-2-yne is 999-78-0.
What are the molecular formula and molecular weight of 4,4-dimethylpent-2-yne?
4,4-dimethylpent-2-yne has molecular formula C7H12 and molecular weight 96.17020 g/mol.
What are the upstream and downstream products of 4,4-dimethylpent-2-yne?
For 4,4-dimethylpent-2-yne, Upstream Products: iodomethane, 1-(Trimethylsilyl)-1-propyne, tert-butyl chloride; Downstream Products: 4,4-dimethylpent-1-en-3-one, Pivalic acid, Dichlorobis(triphenylphosphine)palladium(II).
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,4-dimethylpent-2-yne (CAS 999-78-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31109-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.