Chlorine gas is greenish yellow in color and is a respiratory irritant. As little as 3.5 ppm can be detected as an acrid odor, and 1000 ppm is likely to be fatal after a few deep breaths. It is extremely reactive and will combine directly with almost all other elements. At 10C, one volume of water will dissolve 3.10 volumes of chlorine. Chlorine does not react directly with water, but will react with many things that may be present in the water. It is this action which makes chlorine valuable as a sanitizing solution, as it will destroy most insects and microorganisms such as fungi, bacteria, yeasts, and viruses. The hard, waxy, waterproof outer shells of many seeds will enable them to withstand brief exposure to dilute chlorine solutions that will kill many disease causing microorganisms that may be present on the seed's outer surface. :{ Rich in Va. http://www.erols.com/richstev ICQ 2269905 Photo Trend Enterprises- A Restaurant Service Company HF, As far as I know, the green chlorine gas you don't smell, but this change when it's attached to water molecules. Perhaps the chlorine and water ends up in a connection what will have a different molecule structure? Any how I have never tried soaking my seeds in water chlorine, just put them in sowing-soil water them and wait... Hot regards Rob