四己基硫酸氢铵

白色粉末或结晶，熔点：96-103 °C

红外光谱鉴别Infrared spectrometry                    和对照匹配
纯度Purity                                                               98.5%-101.5% （中和滴定）  
熔点Melting point                                                   98°C - 100°C
λ 10 % in acetonitrile
UV absorption
  λ: 210 nm A:                          ≤0.10
  λ: 220 nm A:                          ≤0.04
  λ: 230 nm A:                          ≤0.03
  λ: 260 nm A:                          ≤0.02
  λ: 500 nm A:                          ≤0.02
RP gradient test                        corresponds to standard
filter test                             corresponds to standard
 

辛脂相转移催化剂。在钌催化的反应中zui有效。