CAS: 6018-89-9 EC No: 206-761-7 MDL No: MFCD00066973 RTECS: QR6126000 UN No: UN3077; Haz Class: 9; Packing Group: III Crystalline Linear Formula: Ni(OCOCH₃)₂·4H₂O MW: 248.84 Density (g/mL): 1.798