1920-90-7 Usage
Uses
Used in Automotive Industry:
Tetra-n-butyllead was historically used as a gasoline additive to improve engine performance. It served as a catalyst to increase the octane rating of gasoline, thereby reducing engine knocking and allowing for more efficient combustion.
However, due to the serious health risks and environmental concerns associated with tetra-n-butyllead, its production and use have been regulated and restricted in many countries. TETRA-N-BUTYLLEAD can cause neurological damage, organ failure, and other systemic toxicities upon exposure, necessitating the development of safer alternatives for gasoline additives.
Check Digit Verification of cas no
The CAS Registry Mumber 1920-90-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,2 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1920-90:
(6*1)+(5*9)+(4*2)+(3*0)+(2*9)+(1*0)=77
77 % 10 = 7
So 1920-90-7 is a valid CAS Registry Number.
InChI:InChI=1/4C4H9.Pb/c4*1-3-4-2;/h4*1,3-4H2,2H3;/rC16H36Pb/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4/h5-16H2,1-4H3
1920-90-7Relevant academic research and scientific papers
IR Spectra of n-Bu4M (M = Si, Ge, Sn, Pb), n-BuAuPPh3-d15, and "n-Bu" on a Gold Surface
Kaleta, Ji?í,Bednárová, Lucie,?í?ková, Martina,Wen, Jin,Kaletová, Eva,Michl, Josef
, p. 4619 - 4625 (2017/07/11)
Observed and DFT-calculated IR spectra of n-Bu4M (M = Si, Ge, Sn, Pb), (CH3CH2CH213CD2)4Sn, and n-BuAuPPh3-d15 are reported and assigned. The asymmetric CH stretching vibration of the CH2 group adjacent to the metal atom appears as a distinct shoulder at ～2934 cm-1, whereas for other CH2 groups it is located at ～2922 cm-1. The characteristic peak at ～2899 cm-1 is attributed to an overtone of a symmetric CH2 bend at ～1445 cm-1. In n-BuAuPPh3-d15, the CH stretching vibrations of the butyl group are shifted to lower frequencies by ～10 cm-1, and two possible rationalizations are offered.
