Regulations of Connecticut State Agencies
For the purpose of sections 19-13-E2 to 19-13-E4, inclusive, "tetraethyl lead" means the chemical substance Pb (C2H5)4 of a commercial grade of purity or higher. Ethyl fluid is the concentrated commercial fluid containing tetraethyl lead and other ingredients, which is to be mixed with gasoline to make ethyl gasoline. The manufacture of ethyl fluid consists in adding these other ingredients to tetraethyl lead and is called blending. The process of adding the ethyl fluid to gasoline to form ethyl gasoline is called mixing. In the term "ethyl gasoline," as herein used, are included all other motor fluids containing tetraethyl lead.