Sodium thiocyanate is an odorless white solid. Sinks and mixes with water. (USCG, 1999)Sodium thiocyanate is an organic sodium salt which is the monosodium salt of thiocyanic acid. It contains a thiocyanate.Sodium thiocyanate solution (56% or less) is an odorless clear to pale yellow liquid. (USCG, 1999)