司盤 20，常溫下為黃色至琥珀色粘稠液體或膏體。有特殊氣味，稍溶于異丙醇、四氯乙烯、二甲苯、棉子油、礦物油中，微溶于液體石蠟，不溶于水，分散后呈乳狀溶液。具有乳化、潤滑、穩定、消泡等性能，屬 W/O 型乳化劑，HLB 值 8.6。

S20,Yellow to amber viscous liquid or paste at room temperature.Have a particular smell,slightly soluble in isopropanol, tetrachloroethylene, xylene, cottonseed oil, mineral oil,slightly soluble in liquid paraffin, insoluble in water,dispersed in a milky solution.With the properties of emulsification, lubrication, stability and defoaming, and belongs to W/O type emulsifier.HLB is 8.6.