2851 Inorganic compounds, incl. distilled or conductivity water and water of similar purity, n.e.s., liquid air, whether or not rare gases have been removed, compressed air, amalgams (other than amalgams of precious metals)

2851 (01/1988-12/2006) Inorganic compounds, incl. distilled or conductivity water and water of similar purity, n.e.s., liquid air, whether or not rare gases have been removed, compressed air, amalgams (other than amalgams of precious metals) 28510010 (01/1988-12/2006) Distilled and conductivity water and water of similar purity 28510030 (01/1988-12/2006) Liquid air, whether or not rare gases have been removed, compressed air 28510050 (01/1998-12/2006) Cyanogen chloride 28510080 (01/1998-12/2006) Inorganic compounds, n.e.s., amalgams other than amalgams of precious metals 28510090 (01/1988-12/1997) Inorganic compounds n.e.s., amalgams other than amalgams of precious metals