can't read?
: D 1622
: 821-10-3
: ClCH2C≡CCH2Cl
: 122.98
: D 1622 (OTTO) 1,4-Dichloro-2-butyne, 97% Cas 821-10-3 - used in advanced functional materials.
: Essential chemicals,Research essentials chemicals
: 99%
: Liquid
: 165-168 °C (lit.)
WGK 3