Product Description o-Phthalaldehyde (OPA) extrapure AR, 99% Other Details Molecular Formula: 0 Molecular Weight: 0 CAS Number: 643-79-8 Minimum Purity: 0 UN Number: UN No.:2923 Dangerous Goods Class: IMCO Class No.:8(6.1) Packing Group: Packing Group:II Storage Temperature: 2-8C Sizes 1: 0 Leadtime:45 - 60 Days Sizes 2: 0 Leadtime:0 Sizes 3: 0 Leadtime:0