75-74-1 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 75-74-1 differently. You can refer to the following data:
1. Tetramethyl lead is a flammable, colourless liquid with a slightly sweet odour. Tetramethyl lead is insoluble in water but is soluble in most organic solvents, alcohol, benzene, and petroleum ether. Tetramethyl lead is incompatible with tetrachloro trifluoromethyl phosphorus, strong oxidisers, sulphuryl chloride, and potassium permanganate. Tetramethyl lead on hazardous decomposition releases toxic gases and particulates, such as lead fumes and carbon monoxide. It may cause fires and explosions. The commercial product is often dyed red, orange, or blue. Tetramethyl lead is frequently mixed with smaller amounts of ethylene dibromide, ethylene dichloride, dyes, kerosene, stabilisers, and inert substances.
2. Tetramethyl lead is a colorless liquid with a slight musty odor. In commerce it is usually dyed red, orange or blue.
Uses
Different sources of media describe the Uses of 75-74-1 differently. You can refer to the following data:
1. Anti-knock motor fuel additive
2. Gasoline additive, especially to aviation
and premium grades with high aromatic
content。
General Description
Colorless liquid, dyed red, orange or blue. Has a slight musty odor. Used as an antiknock additive for gasolines; component of mixed alkyl leads for gasoline additives.
Air & Water Reactions
Highly flammable.
Reactivity Profile
Tetramethyllead is sensitive to heat. Tetramethyllead can react with strong oxidizers.
Hazard
Flammable, moderate fire risk. Toxic by
ingestion, inhalation, and skin absorption. Lower explosion level 1.8%. Central nervous system
impairment. Questionable carcinogen.
Health Hazard
Vapors are very toxic. Fatal lead poisoning may occur by ingestion, vapor inhalation or skin absorption. Several cases of acute toxicity, usually in the form of degenerative brain disease, have been described following occupational exposure.
Fire Hazard
Thermal decomposition is likely to take the form of vapors at the surface. Rapid decomposition will cause container to explode. Dangerous fire hazard when exposed to heat, flame, or oxidizers. Toxic gases are generated in fire. Avoid strong oxidizers such as sulfuryl chloride or potassium permanganate. Avoid fire, heat, physical damage, and strong oxidizers. Starts to decompose at about 212F. If confined, may explode or detonate at high temperatures. Hazardous polymerization may not occur.
Safety Profile
Poison by ingestion, intraperitoneal, parenteral, and intravenous routes. Moderately toxic by skin contact. An experimental teratogen. Experimental reproductive effects. Lead and its compounds have dangerous central nervous system effects. A flammable liquid and very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard in the form of vapor when exposed to flame. May explode when heated above 90℃. Explosive reaction with tetrachlorotrifluoromethyl phosphorane. Can react vigorously with oxidzing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Pb. Used as an octane enhancer for gasoline. See also LEAD COMPOUNDS.
Potential Exposure
Those engaged in the manufacture, distribution, and blending into gasoline of this antiknock agent for aviation gasoline.
Carcinogenicity
TML was not mutagenic in a number of
bacterial strains with or without metabolic
activation.
Shipping
UN1649 Motor fuel antiknock mixtures, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Incompatibilities
Highly flammable liquid; Vapors may form explosive mixture with air. Violent reaction with oxidizers, such as sulfuryl chloride or potassium permanganate; strong acids; especially nitric acid; chemically active metals. Decomposes and may explode in heat above 90C. Attacks rubber.
Waste Disposal
Controlled incineration with scrubbing for collection of lead oxides which may be recycled or landfilled. It is also possible to recover alkyl lead compounds from wastewaters (A-58) as an alternative to disposal.
Check Digit Verification of cas no
The CAS Registry Mumber 75-74-1 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 75-74:
(4*7)+(3*5)+(2*7)+(1*4)=61
61 % 10 = 1
So 75-74-1 is a valid CAS Registry Number.
InChI:InChI=1/4CH3.Pb/h4*1H3;/rC4H12Pb/c1-5(2,3)4/h1-4H3
75-74-1Relevant articles and documents
Williams
, p. 4062 (1967)
Boleslawski,M. et al.
, p. 193 - 198 (1974)
Boleslawski,Pasynkiewicz
, p. 81 (1972)
Rapsomanikis, Spyridon,Ciejka, Joseph J.,Weber, James H.
, p. 179 - 184 (1984)
Chemistry of C6F5SeLi and C6F 5SeCl: Precursors to new pentafluorophenylselenium(II) compounds
Klap?tke, Thomas M.,Krumm, Burkhard,Mayer, Peter
, p. 547 - 553 (2007/10/03)
Pentafluorobenzeneselenenyl chloride, C6F5SeCl, was reacted with various nitrogen and chalcogen substituted trimethylsilyl nucleophiles. The products, C6F5SeSCN, C6F 5SeNSO, (C6F5Se)2NMe, C 6F5SeN(Me)SiMe3, (C6F 5Se)2S and (C6F5Se)2Se, were characterized by spectroscopic methods. The reaction of C6F 5SeLi with Me3XHal compounds gave the products C 6F5SeXMe3 (X = Si, Ge, Sn, Pb). The molecular structure of (C6F5Se)2S has been determined by X-ray diffraction.
Organolead derivatives of coordinatively saturated platinum(II) olefin complexes. Molecular structure of [PtCl(PbPh2Cl)(2,9-dimethyl-1,10-phenanthroline)(dimethyl maleate)] and its deplumbation product [PtCl(Ph)(2,9-dimethyl-1,10-phenanthroline)(dimethyl maleate)]
Albano, Vincenzo G.,Castellari, Carlo,Monari, Magda,De Felice, Vincenzo,Ferrara, Maria L.,Ruffo, Francesco
, p. 4213 - 4221 (2008/10/09)
The stabilization of Pt(II)-PbR2Cl linkages (R = Me, Ph) is reported. The compounds of general formula [PtCl(PbR2Cl)(N-N)(olefin)] (N-N = 2,9-dimethyl-1,10-phenanthroline (dmphen) and 6-methylpyridine-2-phenylimine (pimpy)) have been obtained through the oxidative addition of PbMe2Cl2 and PbPh2Cl2 to three-coordinate Pt(O) complexes [Pt(N-N)(olefin)]. In the presence of less hindered N-N ligands (e.g., 2-methyl-1,10-phenanthroline) the addition leads only to the isolation of the mononuclear Pt(II) complexes [PtCl(R)(N-N)]. The molecular structure of [PtCl(PbPh2Cl)(dmphen)(dimethyl maleate)] has shown that the Pt-Pb bond is stabilized by an additional interaction of a carboxylate oxygen to the lead atom. The deplumbation product [PtCl(Ph)(dmphen)(dimethyl maleate)] has also been characterized by X-ray crystallography.
