Show how the first synthetic rubber was made in United States by a simple reaction of sodium polysulfide with Ethylene Chloride. This produces a simple condensation polymer consisting of repeating units of ethane and polysulfide. Contains: 4 x 25 ml Sodium Polysulfide Solution 1 x 25 ml Ethylene Dichloride Each bottle of our reagents come standard with an MSDS sheet included. If you require a copy of this prior to purchase, please contact us.