... 0.7-1.2 nm, sizes are hundreds of nm - several µm, excellent solubility in water and DMF, etc, metallic content < 10ppm ... >99%, 85 percent are 2-4 layers, hundreds of nm - several µm, excellent solubility in water and DMF,etc. Metallic content <10ppm ... nm thick , hundreds of nm-dozens of µ m in size, solid powder, > 99% purity, good electrical conductivity, excellent solubility in DMF, chlorobenzene, ...