M

Methylamine

IUPAC: methanamine

CH5N Bases & Alkalis CAS 74-89-5
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Quick Reference
Formula / NotationCH5N
CAS Number74-89-5
Molecular Weight31.057
Melting Point-134.5 °F (USCG, 1999)
Boiling Point20.3 °F at 760 mmHg (USCG, 1999)
Density0.693 at 20.3 °F (USCG, 1999) - Less dense than water; will float
Solubilitygreater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
AppearanceMethylamine, anhydrous appears as a colorless gas or a liquid. Pungent fishy odor resembling odor of ammonia. The liquid boils at cold temperatures, hence it vaporizes rapidly when unconfined. Vapo...
Also Known Asmethanamine; Methanamine; Aminomethane; Monomethylamine; 74-89-5; Carbinamine; Mercurialin; N-Methylamine; Methylaminen; Metilamine
CategoryBases & Alkalis

What is Methylamine?

Methylamine is the simplest of the methylamines, consisting of ammonia bearing a single methyl substituent. It has a role as a mouse metabolite. It is a primary aliphatic amine, a member of methylamines and a one-carbon compound. It is a conjugate base of a methylammonium.

Formula & Notation

CH5N

IUPAC Name: methanamine

Other Names / Synonyms: methanamine; Methanamine; Aminomethane; Monomethylamine; 74-89-5; Carbinamine; Mercurialin; N-Methylamine; Methylaminen; Metilamine

Properties & Characteristics

Appearance: Methylamine, anhydrous appears as a colorless gas or a liquid. Pungent fishy odor resembling odor of ammonia. The liquid boils at cold temperatures, hence it vaporizes rapidly when unconfined. Vapo.... Molecular formula: CH5N. Molecular weight: 31.057 g/mol. Boiling point: 20.3 °F at 760 mmHg (USCG, 1999). Melting point: -134.5 °F (USCG, 1999). Density: 0.693 at 20.3 °F (USCG, 1999) - Less dense than water; will float. Solubility: greater than or equal to 100 mg/mL at 70 °F (NTP, 1992). Vapor pressure: 1972.92 mmHg at 60 °F (USCG, 1999). LogP: -0.7.

Physical Data

PropertyValue
Melting Point-134.5 °F (USCG, 1999)
Boiling Point20.3 °F at 760 mmHg (USCG, 1999)
Density0.693 at 20.3 °F (USCG, 1999) - Less dense than water; will float
Molecular Weight31.057
Solubilitygreater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
AppearanceMethylamine, anhydrous appears as a colorless gas or a liquid. Pungent fishy odor resembling odor of ammonia. The liquid boils at cold temperatures, hence it vaporizes rapidly when unconfined. Vapo...

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 Methylamine
Formula CH5N
CAS Number 74-89-5
Molecular Weight 31.057
Category Bases & Alkalis
Synonyms methanamine; Methanamine; Aminomethane; Monomethylamine; 74-89-5; Carbinamine; Mercurialin; N-Methylamine; Methylaminen; Metilamine

Frequently Asked Questions

Methylamine is the simplest of the methylamines, consisting of ammonia bearing a single methyl substituent. It has a role as a mouse metabolite. It is a primary aliphatic amine, a member of methylamines and a one-carbon compound. It is a conjugate base of a methylammonium.

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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.