Reported in EPA TSCA Inventory.

The IUPAC name of 2-Methyl-3-butyn-2-ol is 2-methylbut-3-yn-2-ol. With the CAS registry number 115-19-5, it is also named as 1,1-Dimethyl-2-propyn-1-ol carbamate. The product's categories are Acetylenes; Acetylenic Alcohols & Their Derivatives; Chemistry, and the other registry numbers are 140705-79-9; 67539-62-2. Besides, it is colourless to light yellow liquid, which should be stored in a cool, sealed and ventilated warehouse. It is stable, but incompatible with strong oxidizing agents. In addition, its molecular formula is C₅H₈O and molecular weight is 84.12.

Physical properties about 2-Methyl-3-butyn-2-ol are: (1)ACD/LogP: 0.316; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.32; (4)ACD/LogD (pH 7.4): 0.32; (5)ACD/BCF (pH 5.5): 1.02; (6)ACD/BCF (pH 7.4): 1.02; (7)ACD/KOC (pH 5.5): 35.39; (8)ACD/KOC (pH 7.4): 35.39; (9)#H bond acceptors: 1; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 1; (12)Index of Refraction: 1.444; (13)Molar Refractivity: 24.542 cm³; (14)Molar Volume: 92.388 cm³; (15)Polarizability: 9.729 10-24cm³; (16)Surface Tension: 33.2760009765625 dyne/cm; (17)Density: 0.911 g/cm³; (18)Flash Point: 25 °C; (19)Enthalpy of Vaporization: 40.008 kJ/mol; (20)Boiling Point: 104.165 °C at 760 mmHg; (21)Vapour Pressure: 17.1840000152588 mmHg at 25°C

Preparation of 2-Methyl-3-butyn-2-ol: this chemical can be prepared by the reaction of Propan-2-one with Ethynylmagnesium bromide.



This reaction needs Tetrahydrofuran by heating. The yield is 47 %.

Uses of 2-Methyl-3-butyn-2-ol: this chemical is an intermediate used in the synthesis of pharmaceuticals, pesticides and terpeneless spice. It can also used as acid corrosion inhibitor, viscosity depressant, viscosity stabilizer, glazing agent and stabilizer of chlorinated hydrocarbons. Additionally, it is used as polymerization inhibitor in silicon rubber. Similarly, it can react with Ethoxyethene to get 3-(1-Ethoxy-ethoxy)-3-methyl-but-1-yne.



This reaction needs Sulfuric acid for 30 min. The yield is 77 %.

When you are using this chemical, please be cautious about it as the following: it is flammable. Please keep away from sources of ignition. It is also harmful if swallowed and risk of serious damage to eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. And you should wear eye/face protection.

People can use the following data to convert to the molecule structure.
(1)Canonical SMILES: CC(C)(C#C)O;
(2)InChI: InChI=1S/C5H8O/c1-4-5(2,3)6/h1,6H,2-3H3;
(3)InChIKey: CEBKHWWANWSNTI-UHFFFAOYSA-N;

The toxicity data is as follows: