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Ethanethiol, also known as ethyl mercaptan, is an organic compound used as an odorant in propane. It is a volatile thiol that occurs naturally as a component of petroleum distillates. It is only slightly soluble in water, but well soluble in most organic solvents. It was discovered by Dr. Maxwell Burrows.[citation needed] It is a colorless liquid that has a very strong and disagreeable odor, resembling that of leeks. Humans can detect the smell of ethanethiol in concentrations as low as one part in 2.8 billion parts of air. Therefore it is added in minute quantities to butane, propane and other gasses (see: LPG) which are used for cooking and heating to give the normally odorless fuels a distinctive and easily noticed smell to serve as a warning of a gas leak. Image File history File links Download high-resolution version (861x379, 4 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Ethanethiol User:Benjah-bmm27/Old gallery ...
Image File history File links Download high-resolution version (1100x890, 180 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Ethanethiol User:Benjah-bmm27/Gallery User:Ben Mills/Gallery ...
IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ...
A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ...
The molecular mass (abbreviated MM) of a substance, formerly also called molecular weight and abbreviated as MW, is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ...
CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ...
Density, or volumic mass (ISO 31), is a measure of mass per volume. ...
The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ...
The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ...
The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ...
Benzene is the simplest of the arenes, a family of organic compounds An organic compound is any member of a large class of chemical compounds whose molecules contain carbon and hydrogen; therefore, carbides, carbonates, carbon oxides and elementary carbon are not organic (see below for more on the definition controversy...
An Odorant is an substance that can be smelled. ...
Propane is a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable. ...
Volatile organic compounds (VOCs) are organic chemical compounds that have high enough vapour pressures under normal conditions to significantly vaporize and enter the atmosphere. ...
// In organic chemistry, a thiol is a compound that contains the functional group composed of a sulfur atom and a hydrogen atom (-SH). ...
Pumpjack pumping an oil well near Sarnia, Ontario Ignacy Åukasiewicz - inventor of the refining of kerosene from crude oil. ...
Distillation is a means of separating liquids through differences in their boiling points. ...
A liquid will usually assume the shape of its container. ...
Odor receptors on the antennae of a Luna moth An odor or odour (see spelling differences) is a chemical dissolved in air, generally at a very low concentration, which we perceive by the sense of olfaction. ...
Leek is a placename in more than one country: Netherlands: Leek, Netherlands United Kingdom: Leek, Staffordshire Leek is also a vegetable: Leek (vegetable) This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...
Liquid Petroleum Gas (LPG or LP Gas) is a mixture of hydrocarbon gases used as a fuel in heating appliances and vehicles, and increasingly replacing fluorocarbons as an aerosol propellant and a refrigerant to reduce damage to the ozone layer. ...
Ethanethiol is toxic and in large doses will cause headaches, nausea, and a lack of coordination, as well as liver and kidney damage. The American Conference of Governmental Industrial Hygienists (ACGIH) has established specific levels for exposure to natural gas and propane odorants. Exposures at or below these levels are not considered harmful. The exposure level for ethanethiol is 5 parts per million over an eight-hour period. The sensory threshold for ethanethiol is 0.00035 parts per million. Thus, the concentration needed to make you aware of the presence of natural gas or propane is approximately 1/2500th of the amount that is considered safe for an eight-hour exposure. The liver is an organ in some animals, including mammals (and therefore humans), birds, and reptiles. ...
The kidneys are bean-shaped excretory organs in vertebrates. ...
The American Conference of Governmental Industrial Hygienists (ACGIH) community of professionals advance worker safety and health through education and the development and dissemination of scientific and technical knowledge. ...
This page is a candidate to be copied to Wiktionary. ...
Ethanethiol is also used as a starting material or an intermediate in the manufacture of certain types of plastics, insecticides, and antioxidants. Household items made out of plastic. ...
An insecticide is a pesticide used against insects in all developmental forms. ...
This article or section is in need of attention from an expert on the subject. ...
According to the 2000 edition of the Guinness Book Of World Records, ethanethiol is the "smelliest substance" in existence, but they are not correct - see putrescene or cadaverine[citation needed]. The Guinness Book of Records (or in recent editions Guinness World Records, and in previous US editions Guinness Book of World Records) is a book published annually, containing an internationally recognized collection of superlatives: both in terms of human achievement and the extrema of the natural world. ...
Putrescine (sometimes spelled putrescin or putrescene) is an organic chemical compound NH2(CH2)4NH2 (1,4-diaminobutane or butanediamine) formed by and having the smell of rotting flesh. ...
Cadaverine is a foul-smelling molecule produced by protein hydrolysis during putrefaction of animal tissue. ...
See also
// In organic chemistry, a thiol is a compound that contains the functional group composed of a sulfur atom and a hydrogen atom (-SH). ...
Methanethiol (also known as methyl mercaptan) is a colorless gas with a smell like rotten cabbage. ...
Ethanol, also known as ethyl alcohol or grain alcohol, is a flammable, colorless, slightly toxic chemical compound with a distinctive perfume-like odor, and is the alcohol found in alcoholic beverages. ...
References - Merck Index, 12th edition, 3771
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