Tetramethyllead

Base Information

• Chemical Name: Tetramethyllead
• CAS No.: 75-74-1
• Molecular Formula: C4H12 Pb
• Molecular Weight: 267.339
• European Community (EC) Number: 200-897-0
• ICSC Number: 0200
• UN Number: 1649,3082
• UNII: C7J62Z32IW
• DSSTox Substance ID: DTXSID0026123
• Wikipedia: Tetramethyllead
• Wikidata: Q425777
• Mol file: 75-74-1.mol

Synonyms:tetramethyllead

Chemical Property of Tetramethyllead

Chemical Property:

• Appearance/Colour: colourless liquid
• Vapor Pressure: 17.5mmHg at 25°C
• Melting Point: -27.5 ºC
• Refractive Index: n20/D 1.497
• Boiling Point: 110 ºC
• Flash Point: 37.7 ºC
• PSA: 0.00000
• Density: 1.3 g/mL at 25 °C
• LogP: 1.95440
• Water Solubility.: insoluble
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 268.07055
• Heavy Atom Count: 5
• Complexity: 19.1
• Transport DOT Label: Poison Flammable Liquid

Purity/Quality:

99%, ^*data from raw suppliers

TETRAMETHYL LEAD 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Flammable, moderate fire risk. Toxic by ingestion, inhalation, and skin absorption. Lower explosion level 1.8%. TLV: 0.15 mg(Pb)/m³. Toxic by skin absorption.
• Hazard Codes: T+,N
• Statements: 61-10-26/27/28-33-38-50/53-62
• Safety Statements: 53-26-28-36/37/39-45-60-61

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metals, Organic Compounds
• Canonical SMILES: C[Pb](C)(C)C
• Inhalation Risk: A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20 °C.
• Effects of Short Term Exposure: The substance may cause effects on the central nervous system. This may result in brain disorders. The effects may be delayed. Exposure could cause death. Medical observation is indicated.
• Uses: Anti-knock motor fuel additive Gasoline additive, especially to aviation and premium grades with high aromatic content。

Technology Process of Tetramethyllead

There total 52 articles about Tetramethyllead which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 70.0%

bis(η5-cyclopentadinyl)dihydridomolybdenum + acetatotrimethyl-lead → μ-diacetatoplumbio-bis[bis(η-cyclopentadienyl)hydrido-molybdenum](2Pb-Mo) + Tetramethylblei-(IV) (75-74-1)

Guidance literature:

In not given; byproducts: CH4; Pb deriv. diffused through a glass frit was added under N2 to an equimolar amt. of Mo hydride in acetone or toluene; a progressive color changefrom yellow to red occured, after 1 h violet crystals pptd.; identified by elem. anal., IR, NMR spectra and single crystal X-ray diffraction;

Reference yield: 70.0%

WH2(η-cyclopentadienyl)2 + acetatotrimethyl-lead → μ-diacetatoplumbio-bis[bis(η-cyclopentadienyl)hydrido-tungsten](2Pb-W) + Tetramethylblei-(IV) (75-74-1)

Guidance literature:

In not given; byproducts: CH4; Pb deriv. diffused through a glass frit was added under N2 to an equimolar amt. of W hydride in acetone or toluene; a progressive color change from yellow to red occured, after 1 h violet crystals pptd.; identified by elem. anal., IR and NMR spectra;

Reference yield: 65.0%

[Co(C10N4H12(CH3)4)(CH3)2](1+)*ClO4(1-)*H2O=[Co(C10N4H12(CH3)4)(CH3)2]ClO4*H2O + dimethyllead dichloride (1520-77-0) → Tetramethylblei-(IV) (75-74-1)

Guidance literature:

In water; byproducts: CH4; reaction was carried out in the dark at room temp. in aq. soln. contg. 0.1 M KCl; product was identified by MAS;

DOI:10.1016/S0020-1693(00)82348-8

upstream raw materials:

methyl bromide

methylene chloride

dimethyl zinc(II)

methylmagnesium chloride

Downstream raw materials:

1,4-di(1,1-dicyanoethyl)benzene

methyl silver

dimethylmercury

methylethylmercury

Refernces

• 1、 Mortensen,Leighton. "". . . Retrieved 1936.
• 2、 Gorsich,Robbins. "". . p. 444,446. Retrieved 1969.
• 3、 Huber, F.,Roge, G.,Barbieri, R.,Bianca, F. Di. "ORGANOZINN- UND ORGANOBLEIDERIVATE VON N-(2,4-DINITROPHENYL)GLYCIN". . p. 185 - 192. Retrieved 1982.
• 4、 Arias-Ugarte, Renzo N.,Pannell, Keith H.. "A utility for organoleads: Selective alkyl and aryl group transfer to tin". . p. 1703 - 1708. Retrieved 2018/02/09.
• 5、 Varga, Richard A.,Silvestru, Cristian,Haiduc, Ionel. "Synthesis and spectroscopic characterization of new organolead(IV) complexes containing organophosphorus ligands". . p. 485 - 498. Retrieved 2008/10/08.