Number of Layers: 4 to 8, Material Form: Powder, Linear Formula – CxOyHz Thickness – 3-5 nm Number of layers – 2-6 layers Diameter – 0.8-2 nm Length – 5 to 10 microns Colour – Grey-Black Product Purity – > 99% Surface BET Area – >110 Square meter/gm Bulk Density – 0.48 g/cc