Product Description Maleic acid hydrazide Other Details Molecular Formula: C4H4N2O2 Molecular Weight: 112.09 CAS Number: 123-33-1 Minimum Purity: 99% (HPLC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5g Leadtime:20 Days Sizes 2: 25g Leadtime:20 Days Sizes 3: 100g Leadtime:20 Days