|
Jul. 15th, 2022|05:42 pm |
tu to tagad nopietni saki??????
NEBIJA CITU - ????
es neesmu ķīmiķe, bet basic history facts?
Nonetheless, the history of tetraethyl lead (TEL) has lessons to teach us. Its origins as a gasoline additive began in the 1920s, when it was perfected by GM as an anti-knock compound for high-compression engines. But GM—controlled at the time by DuPont— knew perfectly well that there was already an effective anti-knock additive available: ethanol. Motor fuel made up of about 80% gasoline and 20% ethanol worked beautifully. In “The Secret History of Lead,” published in 2000 in The Nation, Jamie Lincoln Kitman explains what happened next:
From the corporation’s perspective, however, the problems with ethyl alcohol were ultimately insurmountable and rather basic. GM couldn’t dictate an infrastructure that could supply ethanol in the volumes that might be required. Equally troubling, any idiot with a still could make it at home, and in those days, many did. And ethanol, unlike TEL, couldn’t be patented; it offered no profits for GM. |
|