We are offering urea. cas no: 39236-46-9molecular formula: c11h16n8o8molecular weight: 388.2935einecs:254-372-6 physical characteristics(not necessarily specifications)color: whiteodor: none or characteristically mildappearance: fine, free flowing powdernitrogen: 26.0-28.0%ph:6.0-7.5(1% aqueous solution)loss on drying: 3.0% maximumresidue on ignition: 3.0% maximumheavy metals:10 ppm maximumdear sir or madam, good day! here you can buy varieties of chemicals at your pleasure. what's more, we can give you the best price for the products . at any time to provide quotation and product information. sincerely hope we can build relation in the near future!