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Tertiary amines is used as pH adjuster / emulsifier.
Tertiary amines are used as accelerators or catalysts in polyurethane/epoxy curing.
Tertiary Amines are used base, catalyst, acid scavenger (e.g., triethylamine).
CAS Number: Varies by compound; common examples:
Trimethylamine: 75-50-3
Triethylamine: 121-44-8
EC Number: Varies by compound; e.g.,
Trimethylamine: 200-839-3
Triethylamine: 204-469-4
Molecular Formula: Depends on specific tertiary amine (e.g., (CH₃)₃N for trimethylamine).
Molecular Weight: Varies; for example:
Trimethylamine: 59.11 g/mol
Triethylamine: 101.19 g/mol
SYNONYMS:
Tertiary amines, 3° amines, trialkylamines, tertiary alkylamines, tertiary aliphatic amines, tertiary aromatic amines, tertiary amino compounds, tertiary amine bases
In a Tertiary Amines, all of the hydrogens in an ammonia molecule have been replaced by hydrocarbon groups.
Again, you are only likely to come across simple ones where all three of the hydrocarbon groups are alkyl groups and all three are the same.
The naming is similar to secondary amines.
A tertiary amine is an amine in which the nitrogen atom is bonded to three carbon-containing substituents (no N–H bonds remain).
They occur as trialkylamines (aliphatic), triaryl/alkyl-aryl tertiary amines (aromatic), and multifunctional tertiary amines (e.g., with hydroxyl groups).
Tertiary Amines are widely used as bases, catalysts, corrosion inhibitors, surfactant intermediates, neutralizers, and building blocks in organic synthesis and formulations.
Regulatory listings and dossiers treat specific tertiary amine substances individually (e.g., triethylamine, triethanolamine).
Organic compounds and functional groups that contain a basic nitrogen atom with a lone pair.
Tertiary amines have a nitrogen atom are bonded to three carbon atoms or other functional groups.
Tertiary amines are organic compounds containing a nitrogen atom bonded to three carbon substituents (alkyl, aryl, or heteroaryl groups).
They are distinct because they lack an N–H bond (unlike primary or secondary amines).
This makes them:
*Strong Lewis bases (electron pair donors).
*Nucleophiles in many organic reactions.
*Versatile precursors to surfactants, polymers, and specialty chemicals.
Tertiary amines are common in nature (e.g., alkaloids like nicotine, caffeine are tertiary amines) and industry (triethylamine, triethanolamine, dimethylamino compounds).
Amines are organic compounds derived from ammonia.
Ammonia is an inorganic compound with a central nitrogen atom bonded to 3 hydrogen atoms.
The valency of nitrogen being 5 in the structure of ammonia or amines, it has a lone pair of electrons on it.
When the hydrogen atoms of ammonia are replaced by either an aryl group, alkyl group or a cyclic structure, it is termed as an amine.
The structure of amine is classified into three categories on the basis of the number of hydrogen atoms bonded to the central nitrogen atom.
If two hydrogen atoms are bonded to the central nitrogen atom, it is known as primary amine.
If a single hydrogen atom is bonded to the central nitrogen atom, it is known as secondary amine.
If no hydrogen atom is bonded to the central nitrogen atom, it is a tertiary amine.
Tertiary amines can also be cyclic in nature and be aliphatic and aromatic.
The secondary and tertiary amines are derivatives of ammonia, where two and three of its hydrogens are replaced by alkyl groups, respectively.
Secondary and tertiary amines can be symmetrical with identical alkyl groups attached to the nitrogen atom or unsymmetrical when more than one type of alkyl group is present.
The standard nomenclature of secondary and tertiary amines is similar to the names given to the primary amines.
They are generally named alkylamines.
For symmetrical secondary and tertiary amines, prefixes di– and tri– are used, respectively.
On the other hand, in the case of unsymmetrical amines, individual substituents are identified and listed alphabetically.
In the IUPAC nomenclature, the secondary and tertiary amines are named N-alkylalkanamines.
The IUPAC name for a structure is assigned via the following protocol:
First, identify the alkyl groups attached to the nitrogen atom.
Next, select the longest chain as the parent, while other alkyl groups are listed as substituents.
While numbering the parent hydrocarbon chain, assign the lowest number to the carbon atom bearing nitrogen atom.
Then, assign locants to each substituent.
Use the letter N as the locant for the alkyl groups attached to the nitrogen atom.
Finally, specify the configuration of the chiral center at the beginning of the name, if any is present.
USES and APPLICATIONS of TERTIARY AMINES:
Organic synthesis: Tertiary Amines are used base, catalyst, acid scavenger (e.g., triethylamine).
Surfactants & fabric/chemical intermediates: tertiary amines are precursors to quaternary ammonium surfactants, amine oxides, and corrosion inhibitors.
Cosmetics & personal care: Tertiary amines used as pH adjuster / emulsifier (note: regulatory limits and impurity monitoring apply).
Construction & coatings: Tertiary amines are used as accelerators or catalysts in polyurethane/epoxy curing.
Dyes, solvents, intermediates: aromatic tertiary amines (e.g., N,N-dimethylaniline) are used in dye manufacture and specialty chemical synthesis.
Tertiary amines have great importance in chemical industries.
Tertiary amine derivatives are used in water treatments, oil fields, personal care, etc.
6 to 20 carbon-containing linear tertiary amine is used in manufacturing surfactants.
Tertiary amines containing iso-alkyl groups are hard to produce but are greatly used as a non-nucleophilic base and a stabiliser for polymers.
Under certain conditions, tertiary amines are used to produce lactams which are chemical compounds.
