规格型号250N品牌双龙比重0.847闪点256（℃）40℃运动粘度43.89（cSt）粘度指数127倾点-15.0（℃）用途基础油类别III类韩国S—OIL基础油典型指标S—OILBaseOilTypicalSpecificati***Testltams测试项目ASTMUltra-S8250NAppearance外观VisualB&CSp.Gr***ity,15/4℃密度D12960.847Color,sayboit赛波特比色D156+30Cin.vls@40℃,cSt运动粘度，40℃D44543.89Cin.vla@100℃,cSt运动粘度，100℃7.234Vlscositylndex粘度指数D2270127FiashPointC(COC)闪点D92256PourPolnt,℃倾点D97-15.0PourPesldue(CCR),wt%残碳D189<0.01CopperCorrosion,100℃/3hr铜片腐蚀试验D1301aSulfurcontent,Wtppm含硫量D5453<1.0KOH/g总酸值D974<0.01RingAnalysis,Wt%CA芳烃D32380.2RingAnalysis,Wt%CN环烷烃20.9RingAnalysis,Wt%CP烷烃78.9AnllinePoint,℃笨胺点D611124.0UVAbsorbance.260-350nm紫外线吸收D2269<0.1Noack,wt%蒸发损失D58004.1Saturates,wt%饱和度D2007>99)