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Encyclopedia > Methylamine
Methylamine Methylamine

Methylamine Image File history File links Download high-resolution version (1100x846, 22 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Functional group Methylamine ... Image File history File links Download high-resolution version (1100x937, 191 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Methylamine ... Image File history File links Download high-resolution version (1024x1024, 31 KB) Created using Accelrys software and Qutemol for your viewing pleasure. ...

Systematic name methanamine
Other names monomethylamine
Molecular formula CH3NH2
Molar mass 31.1 g/mol
Appearance Colorless Gas
CAS number [74-89-5]
Density and phase 0.902 g/cm3, 40w/w% in water
Solubility in water 108 g/100 ml (20°C)
Melting point -94°C (179.15K)
Boiling point -6°C (267.2 K)
Acidity (pKa) 10.64
Basicity (pKb) 3.36
Viscosity 0.23 cP at 0 °C
Molecular shape tetrahedral
Crystal structure  ?
Dipole moment 1.31 D (gas)
MSDS From EMD Chemicals [1]
Main hazards Corrosive liquid and gas,
inhalation hazard, flammable.
NFPA 704

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 simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... In physics, Density is defined as mass m per unit volume V. Mathematically, it is expressed as where, in SI units: ρ (rho) is the density of the substance, measured in kg m-3 m is the mass of the substance, measured in kg v is the volume of the substance... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... It has been suggested that this article or section be merged with Solution. ... This article describes water from a scientific and technical perspective. ... 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. ... In chemistry and biochemistry, the acid dissociation constant, the acidity constant, or the acid-ionization constant (Ka) is a specific type of equilibrium constant that indicates the extent of dissociation of hydrogen ions from an acid. ... In chemistry and biochemistry, the acid dissociation constant, the acidity constant, or the acid-ionization constant (Ka) is a specific type of equilibrium constant that indicates the extent of dissociation of hydrogen ions from an acid. ... The related Category:Units of viscosity has been nominated for deletion, merging, or renaming. ... The poise (P; IPA: ) is the unit of dynamic viscosity in the centimetre gram second system of units. ... four sp³ orbitals three sp² orbitals In chemistry, hybridisation or hybridization (see also spelling differences) is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for the qualitative description of atomic bonding properties. ... The coordination geometry of an atom is the geometrical pattern formed by its neighbors in a molecule or a crystal. ... Enargite crystals In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ... The Earths magnetic field, which is approximately a dipole. ... The debye (symbol: D) is a non-SI and non-CGS unit of electrical dipole moment. ... An example MSDS in a US format provides guidance for handling a hazardous substance and information on its composition and properties. ... The examples and perspective in this article or section may not represent a worldwide view. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... Image File history File links NFPA_704. ...

Flash point 8 °C
R/S statement R: 11-36/37 (40% solution in water)
S: ?
RTECS number PF6300000
Supplementary data page
Structure and
n, εr, etc.
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions  ?
Other cations  ?
Related ?  ?
Related compounds  ?
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Methylamine is a simple primary amine with a formula of CH3NH2. Commercially, it is usually sold as a hydrochloride salt (powder), in solutions of methanol (2M), ethanol (8M), THF (2M), or water (40%), or as a pure anhydrous gas in pressurized metal containers. In its freebase (non-salt) form it has a very strong smell similar to rotten fish. It is used both as a solvent, and also for the synthesis of other organic compounds. The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture with air. ... Risk and Safety Statements, also known as R/S statements, R/S numbers, R/S phrases, and R/S sentences, is a system of hazard codes and phrases for labeling dangerous chemicals and compounds. ... R-phrases are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. ... S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. ... RTECS, also known as Registry of Toxic Effects of Chemical Substances, is a database of toxicity information compiled from the open scientific literature that is available for charge. ... The refractive index (or index of refraction) of a material is the factor by which the phase velocity of electromagnetic radiation is slowed in that material, relative to its velocity in a vacuum. ... The dielectric constant εr (represented as or K in some cases) is defined as the ratio: where εs is the static permittivity of the material in question, and ε0 is the vacuum permittivity. ... Ultraviolet-Visible Spectroscopy or Ultraviolet-Visible Spectrophotometry (UV/ VIS) involves the spectroscopy of photons (spectrophotometry). ... IR spectrum of a thin film of liquid ethanol. ... Nuclear Magnetic Resonance Spectroscopy most commonly known as NMR Spectroscopy is the name given to the technique which exploits the magnetic properties of nuclei. ... Basic schematic of a mass spectrometer Mass spectrometry (also known as mass spectroscopy (deprecated)[1] or in common speech mass-spec) is an analytical technique used to measure the mass-to-charge ratio of ions. ... Multivalent redirects here. ... Multivalent redirects here. ... A question mark is a punctuation mark. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... Ammonia Amines are organic compounds containing nitrogen as the key atom in the amine functional group. ... Methanol, also known as methyl alcohol, wood alcohol or wood spirits, is a chemical compound with chemical formula CH3OH. It is the simplest alcohol, and is a light, volatile, colourless, flammable, poisonous liquid with a distinctive odor that is somewhat milder and sweeter than ethanol (ethyl alcohol). ... 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. ... Tetrahydrofuran, also known as THF, hydrofuran, oxolane, oxacyclopentane, or furanidine, is a heterocyclic organic compound. ... Impact of a drop of water. ... As a general term, a substance is said to be anhydrous if it contains no water. ... Freebase refers to the standalone basic form of an alkaloid, as opposed to its water-soluble salt form. ... An organic compound is any of a large class of chemical compounds whose molecules contain carbon, with exception of carbides, carbonates and carbon oxides. ...

The fact that it is not sterically hindered due to its small size, and the relatively low electrophilicity compared to oxygen and fluorine make it particularly useful in electrophilic substitution. Steric effects are the interaction of molecules dictated by their shape and/or spatial relationships. ... In chemistry, an electrophile (literally electron-lover) is a reagent attracted to electrons that participates in a chemical reaction by accepting an electron pair in order to bond to a substance. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless (gas) very pale blue (liquid) Atomic mass 15. ... General Name, Symbol, Number fluorine, F, 9 Chemical series halogens Group, Period, Block 17, 2, p Appearance Yellowish brown gas Atomic mass 18. ... Electrophilic substitution reactions are chemical reactions in which an electrophile displaces another group, typically but not always hydrogen. ...

Methylamine is prepared commercially by the reaction of ammonia with chloromethane. It can also be readily prepared by the reaction of hydrochloric acid with hexamine or by reacting formaldehyde with ammonium chloride. It is on the DEA watchlist for chemical precursors because of clandestine use in manufacture of the drug MDMA (ecstacy) and methamphetamine. Ammonia is a compound with the formula NH3. ... Chloromethane, also called Methyl chloride, or simply R-40 or HCC 40, is a chemical compound once widely used as a refrigerant. ... The chemical compound hydrochloric acid is the aqueous (water-based) solution of hydrogen chloride (HCl). ... Hexamethylenetetramine cage Hexamine ((CH2)6N4) is a chemical created by the reaction of 6 moles of formaldehyde and 4 moles of ammonia. ... The chemical compound formaldehyde (also known as methanal) is a gas with a pungent smell. ... Ammonium chloride or Sal Ammoniac (chemically ammonium chloride (NH4Cl); also nushadir salt, zalmiak, sal armagnac, sal armoniac, salmiakki, salmiak and salt armoniack) is, in its pure form, a clear white water-soluble crystalline salt with a biting taste. ... ecstasy and religious ecstasy MDMA, most commonly known today by the street name ecstasy, is a synthetic entactogen of the phenethylamine family whose primary effect is to stimulate the brain to rapidly secrete large amounts of serotonin, causing a general sense of openness, empathy, energy, euphoria, and well-being. ... Methamphetamine (N-methyl alpha-methyl-phenethylamine or desoxyephedrine and popularly shortened to crystal meth or ice [2] or simply meth) is an N-methylated analog of amphetamine hydrochloride. ...

Methylamine also acts as a buffering agent in the lumen of the chloroplast in plants, effectively siphoning off protons that are heading for ATP synthase. Methylamine is also known as Monomethylamine (MMA). Monomethylamine is used in the manufacture of agro-chemical products, tanning products, dyes, photography, pharmacy, strengthening of special explosives and others. A buffering agent adjusts the pH of a solution. ... Lumen can mean: Lumen (unit), the SI unit of luminous flux Lumen (anatomy), the cavity or channel within a tubular structure Thylakoid lumen, the inner membrane space of the chloroplast 141 Lumen, an asteroid discovered by the French astronomer Paul Henry in 1875 Lumen (band), an American post-rock band... Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. ... An ATP synthase (EC 3. ...

NH3 + CH3OH > H2O + CH3NH2(MMA)

See also

Safety (MSDS) data for dimethylamine General Synonyms: N-methyl-methanamine Molecular formula: C2H7N CAS No: 124-40-3 EINECS No: 204-697-4 EC index no: 612-001-00-9 Physical data Appearance: colourless gas with strong ammonia-like smell Melting point: -92 C Boiling point: 7. ... Trimethylamine, also known as NMe3, N(CH3)3, and TMA, is a colorless, hygroscopic, and flammable simple amine with a typical fishy odor in low concentrations and an ammonia-like odor in higher concentrations. ...

External links

  • Links to external chemical sources

  Results from FactBites:
NTP: Executive Summary Methylamine (1591 words)
Methylamines are produced by the interaction of methanol and ammonia over a catalyst (zinc chloride) at high temperature.
Methylamine has also been detected in milk (7.9 mol/100 g), cheese pizza (2.9mol/100 g), green beans (4.9mol/100 g), commercial samples of wine (0.19µg/mL in red wine, 0.14µg/mL in white wine), uncured and cured pork (1,490µg/kg and 730µg/kg, respectively), and at high levels in squid, octopus, and other seafoods (up to a mean of 255 ppm).
Methylamine was deferred April 9, 1987 for environmental effects because releases of the chemical from manufacturing and processing do not appear to contribute significantly to the level of the chemical in the environment, where the amines are rapidly degraded.
  More results at FactBites »



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