244473

4-Octyne

99%

• Linear Formula: CH₃CH₂CH₂C≡CCH₂CH₂CH₃
• CAS Number: 1942-45-6
• Molecular Weight: 110.20
• Beilstein: 1732138
• EC Number: 217-730-2
• MDL number: MFCD00009471
• UNSPSC Code: 12352100
• eCl@ss: 39010412
• PubChem Substance ID: 24854679
• NACRES: NA.22

Properties

• vapor pressure: 35 mmHg ( 37.7 °C)
• Quality Level: 100
• Assay: 99%
• form: liquid
• refractive index: n20/D 1.425 (lit.)
• bp: 131-132 °C (lit.)
• mp: −103 °C (lit.)
• density: 0.751 g/mL at 25 °C (lit.)
• SMILES string: CCCC#CCCC
• InChI: 1S/C8H14/c1-3-5-7-8-6-4-2/h3-6H2,1-2H3
• InChI key: GZTNBKQTTZSQNS-UHFFFAOYSA-N

Description

General description

4-Octyne, also known as dipropylethyne can be used as a versatile building block in organic synthesis. The kinetics of the stereoselective semi-hydrogenation of 4-octyne (in tetrahydrofuran) was studied.

Application

4-Octyne, an electron-rich dialkylacetylene, was used in the synthesis of highly substituted 1,3-dienes.

Safety Information

• Pictograms: GHS02,GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H226,H304,H319,H335
• Precautionary Statements: P210 - P233 - P240 - P301 + P310 - P305 + P351 + P338 - P331
• Hazard Classifications: Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 84.2 °F - closed cup
• Flash Point(C): 29 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves