Magnesium ribbon coil 25g. Analytical grade 99.8% purity. This is for a whole coil of magnesium ribbon, a whopping 75 foot long! Enough magnesium ribbon to last a lifetime. NOW BACK IN STOCK!! Synonyms: Magnesium ribbon, magnesium clipping, magnesium turnings CAS No.: 7439-95-4 Molecular Weight: 24.31 Chemical Formula: Mg WARNING! FLAMMABLE SOLID. MAY CAUSE IRRITATION TO SKIN, EYES, AND RESPIRATORY TRACT. Proper Shipping Name: MAGNESIUM Hazard Class: 4.1 UN/NA: UN1869 Packing Group: III