D

Dimethylamine

IUPAC: N-methylmethanamine

C2H7N Bases & Alkalis CAS 124-40-3
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Quick Reference
Formula / NotationC2H7N
CAS Number124-40-3
Molecular Weight45.08
Melting Point-135 °F (NTP, 1992)
Boiling Point45.3 °F at 760 mmHg (NTP, 1992)
Density0.671 at 44.4 °F (USCG, 1999) - Less dense than water; will float
Solubility24 % at 140 °F (NIOSH, 2024)
AppearanceDimethylamine, anhydrous appears as a colorless gas smelling of fish at low concentrations and of ammonia at higher concentrations. Shipped as a liquid under its vapor pressure. Contact with the un...
Also Known AsN-methylmethanamine; N-Methylmethanamine; 124-40-3; N,N-Dimethylamine; Methanamine, N-methyl-; Dimethylamine (anhydrous); RCRA waste number U092; Ai3-15638-X; ARQ8157E0Q; DTXSID5024057
CategoryBases & Alkalis

What is Dimethylamine?

Dimethylamine is a secondary aliphatic amine where both N-substituents are methyl. It has a role as a metabolite. It is a member of methylamines and a secondary aliphatic amine. It is a conjugate base of a dimethylaminium.

Formula & Notation

C2H7N

IUPAC Name: N-methylmethanamine

Other Names / Synonyms: N-methylmethanamine; N-Methylmethanamine; 124-40-3; N,N-Dimethylamine; Methanamine, N-methyl-; Dimethylamine (anhydrous); RCRA waste number U092; Ai3-15638-X; ARQ8157E0Q; DTXSID5024057

Properties & Characteristics

Appearance: Dimethylamine, anhydrous appears as a colorless gas smelling of fish at low concentrations and of ammonia at higher concentrations. Shipped as a liquid under its vapor pressure. Contact with the un.... Molecular formula: C2H7N. Molecular weight: 45.08 g/mol. Boiling point: 45.3 °F at 760 mmHg (NTP, 1992). Melting point: -135 °F (NTP, 1992). Density: 0.671 at 44.4 °F (USCG, 1999) - Less dense than water; will float. Solubility: 24 % at 140 °F (NIOSH, 2024). Vapor pressure: 1388.03 mmHg at 70 °F (USCG, 1999). LogP: -0.2.

Physical Data

PropertyValue
Melting Point-135 °F (NTP, 1992)
Boiling Point45.3 °F at 760 mmHg (NTP, 1992)
Density0.671 at 44.4 °F (USCG, 1999) - Less dense than water; will float
Molecular Weight45.08
Solubility24 % at 140 °F (NIOSH, 2024)
AppearanceDimethylamine, anhydrous appears as a colorless gas smelling of fish at low concentrations and of ammonia at higher concentrations. Shipped as a liquid under its vapor pressure. Contact with the un...

Uses & Applications

Used in chemical manufacturing, pH adjustment, saponification, water treatment, and as a laboratory reagent.

Safety Information

Corrosive or irritant. Causes burns to skin and eyes. Store away from acids. Wear protective gloves and goggles. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Dimethylamine
Formula C2H7N
CAS Number 124-40-3
Molecular Weight 45.08
Category Bases & Alkalis
Synonyms N-methylmethanamine; N-Methylmethanamine; 124-40-3; N,N-Dimethylamine; Methanamine, N-methyl-; Dimethylamine (anhydrous); RCRA waste number U092; Ai3-15638-X; ARQ8157E0Q; DTXSID5024057

Frequently Asked Questions

Dimethylamine is a secondary aliphatic amine where both N-substituents are methyl. It has a role as a metabolite. It is a member of methylamines and a secondary aliphatic amine. It is a conjugate base of a dimethylaminium.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.