Molecular Structure of 1-Nonyne (CAS No. 3452-09-3):

IUPAC Name: Non-1-yne 
Molecular Formula: C₉H₁₆
Molecular Weight: 124.223340 g/mol
Appearance: clear colorless to pale yellow liquid
Index of Refraction: 1.43
Molar Refractivity: 41.57 cm³
Molar Volume: 160.8 cm³
Surface Tension: 27.7 dyne/cm
Density: 0.772 g/cm³
Flash Point: 33.9 °C
Enthalpy of Vaporization: 37.14 kJ/mol
Boiling Point: 150.5 °C at 760 mmHg
Vapour Pressure: 4.87 mmHg at 25°C
Melting Point: -50°C
Refractive Index: 1.419-1.422
Storage Temp.: Flammables area
BRN: 1736573
EINECS: 222-375-1
Product Categories: Acetylenes; Acetylenic Hydrocarbons; Alkynes; Organic Building Blocks; Terminal
Structure Descriptors of 1-Nonyne (CAS No. 3452-09-3):
SMILES: C#CCCCCCCC
InChI: InChI=1/C9H16/c1-3-5-7-9-8-6-4-2/h1H,4-9H2,2H3
InChIKey: OSSQSXOTMIGBCF-UHFFFAOYAP
Std. InChI: InChI=1S/C9H16/c1-3-5-7-9-8-6-4-2/h1H,4-9H2,2H3
Std. InChIKey: OSSQSXOTMIGBCF-UHFFFAOYSA-N

Safety Information of 1-Nonyne (CAS No. 3452-09-3):
Hazard Codes: F ;Xn,Xi X
Risk Statements: 10-36/37/38
R10:Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 16-26-36/37/39
S16:Keep away from sources of ignition.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: 1993
HazardClass: 3
PackingGroup: III