# Why is 1,2-diiodoethane unstable? [duplicate]

Diiodoethane is a product of the reaction between glycol and $$\ce{PI3}$$. Why is 1,2-diiodoethane unstable?

• Although 1,2-diiodoethane is commercially available (e.g., Sigma-Aldrich), it has been recommended that it should be stored in $\pu{2-7 ^\circ C}$. Isn't that means it may tend to decompose? – Mathew Mahindaratne Nov 9 '19 at 6:35