The 1-Chloro-4-nonyne, its cas register number is 3416-74-8. It also can be called as 4-Nonyne, 1-chloro- and the IUPAC name about this chemical is 1-chloronon-4-yne.

Physical properties about 1-Chloro-4-nonyne are: (1)ACD/LogP: 3.93; (2)ACD/LogD (pH 5.5): 3.93; (3)ACD/LogD (pH 7.4): 3.93; (4)ACD/BCF (pH 5.5): 574.53; (5)ACD/BCF (pH 7.4): 574.53; (6)ACD/KOC (pH 5.5): 3286.37; (7)ACD/KOC (pH 7.4): 3286.37; (8)#Freely Rotating Bonds: 5; (9)Index of Refraction: 1.454; (10)Molar Refractivity: 46.59 cm³; (11)Molar Volume: 171.7 cm³; (12)Polarizability: 18.47x10^-24cm³; (13)Surface Tension: 31.4 dyne/cm; (14) Enthalpy of Vaporization: 42.63 kJ/mol; (15)Vapour Pressure: 0.312 mmHg at 25°C

Uses of 1-Chloro-4-nonyne: it can be used react with malonic acid dimethyl ester to produce malonic acid dimethyl ester. It will need reagent NaH, KI and solvent dimethylformamide, tetrahydrofuran, paraffin. The yield is about 64 %.

When you are using this chemical, you should be very cautious. Being a kind of irritant chemical, it is irritating to eyes, respiratory system and skin. When you are contacting with it, wear suitable protective clothing, gloves and eye/face protection. And if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CCCCC#CCCCCl
(2)InChI: InChI=1S/C9H15Cl/c1-2-3-4-5-6-7-8-9-10/h2-4,7-9H2,1H3
(3)InChIKey: RHZYERSKMQJUCP-UHFFFAOYSA-N