Product Description 1,4-Dichloro-2-butyne Other Details Molecular Formula: C4H4Cl2 Molecular Weight: 122.98 CAS Number: 821-10-3 Minimum Purity: 0.97 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days