Melting point :162-165 °C
Boiling point :165-168 °C (lit.)
Density :1.258 g/mL at 25 °C (lit.)
refractive index :n20/D 1.505(lit.)
Flash point :320 °F
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form :Oil
color :Clear Colourless
Sensitive :Light Sensitive
BRN :635740
InChI :1S/C4H4Cl2/c5-3-1-2-4-6/h3-4H2
InChIKey :RCHDLEVSZBOHOS-UHFFFAOYSA-N
SMILES :ClCC#CCCl
CAS DataBase Reference :821-10-3(CAS DataBase Reference)
NIST Chemistry Reference :2-Butyne, 1,4-dichloro-(821-10-3)
EPA Substance Registry System :1,4-Dichloro-2-butyne (821-10-3)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405 Store locked up. P501 Dispose of contents/container to..…