Tetramethylsuccinonitrile or TMSN is an organic compound with the formula (C(CH3)2CN)2. Classified as a di[nitrile]], it is a colorless and odorless solid. TMSN is the by-product from the use of some radical initiators used in polymer manufacture.

CAS：3333-52-6
中文别名：四甲基丁二腈;
英文别名：Tetramethylsuccinotrile;Tetramethylsuccinodinitrile;Butanedinitrile, tetramethyl-;2,2,3,3-tetramethyl-succinodinitrile;2,2,3,3-tetramethylsuccinonitrile;TetraMethylsuccinonitrile;Tetramethylbernsteinsaeure-dinitril;2,3-Dicyano-2,3-dimethylbutane;TMSN;2,2,3,3-Tetramethylsuccinonitrile;Tetramethyl succinonitrile;TETRAMETHYLBUTANEDINITRILE;Succinonitrile,tetramethyl;tetramethyl succinimide;Butanedinitrile,tetramethyl;
分子式：C8H12N2
分子量：136.194
精确质量：136.1
Psa：47.58
Logp：2.08596

MDL号：MFCD00040683

密度：0.923g/cm3
沸点：264.2ºC at 760mmHg
熔点：168ºC
闪点：116.4ºC
折射率：1.44
储存条件：远离所有引火源,置于阴凉、干燥、通风良好地区,远离强氧化剂,不使容器受到物理性撞击

危险品运输编码：UN 3439
危险类别：6.1(a)
包装等级：II