3,3-Dimethyl-1-butyne , 96% , 917-92-0

Synonym(s):
tert-Butylacetylene

CAS NO.：917-92-0

Empirical Formula: C6H10

Molecular Weight: 82.14

MDL number: MFCD00008852

EINECS: 213-035-3

PRODUCT Properties

• Melting point: -78 °C (lit.)
• Boiling point: 37-38 °C (lit.)
• Density: 0.667 g/mL at 25 °C (lit.)
• vapor pressure: 7.88 psi ( 20 °C)
• refractive index: n20/D 1.374(lit.)
• Flash point: <−30 °F
• storage temp.: 2-8°C
• solubility: Chloroform (Slightly), Methanol (Slightly)
• form: Liquid
• color: Clear colorless
• PH: 7.51 at 24.8℃ and 10g/L
• Water Solubility: Miscible with chloroform, benzene and toluene. Immiscible with water.
• BRN: 1697100
• Stability: Stable, but highly flammable. Readily forms explosive mixtures with air. Note low flash point.
• CAS DataBase Reference: 917-92-0(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Butyne, 3,3-dimethyl-(917-92-0)

Description and Uses

3,3-Dimethyl-1-butyne is used as an active pharmaceutical intermediate for terbinafine. It is also used in the preparation of 2,2,7,7-tetramethyl-octa-3,5-diyne. Further, it is used in the synthesis of erythro and threo isomers of B-(3,3-dimethyl-1,2-dideuterio-1-butyl)-9-BBN by hydroboration-deuteronolysis-hydroboration sequence.

Safety

• Symbol(GHS): GHS02
• Signal word: Danger
• Hazard statements: H225-H412
• Precautionary statements: P210-P233-P240-P241-P242-P273
• Hazard Codes: F+,Xi
• Risk Statements: 12-36/37/38
• Safety Statements: 3-16-26-33-7/9
• RIDADR: UN 3295 3/PG 2
• WGK Germany: 3
• HazardClass: 3
• PackingGroup: I
• HS Code: 29012990
• Limited Quantities: 1.0 L (0.3 gallon) (liquid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)