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| monomethylamine | |
|---|---|
| Name | Monomethylamine |
| IUPAC name | Methanamine |
| Other names | Methylamine; methylamine gas; MMA |
| Formula | CH5N |
| Molar mass | 31.06 g·mol−1 |
| Appearance | Colorless gas (compressed/liquefied as colorless liquid) |
| Density | 0.93 g·cm−3 (liquid) |
| Melting point | −93 °C |
| Boiling point | −6 °C |
| Solubility | Miscible with water |
monomethylamine Monomethylamine is a volatile aliphatic amine and the simplest primary amine, commonly encountered as a colorless gas or as aqueous and methanolic solutions. It plays pivotal roles across industrial chemistry, pharmaceuticals, and agricultural chemistry, and is produced, handled, and regulated by multiple chemical manufacturers and regulatory agencies. Its reactivity and physical properties inform its use as an intermediate in synthesis pipelines spanning petrochemical, specialty chemical, and academic research sectors.
Monomethylamine is a primary amine with the molecular formula CH5N and the systematic name methanamine; it is classified within organic chemistry, industrial chemistry, and synthetic chemistry. Major producers and downstream users include multinational corporations, national laboratories, and university research groups involved in process chemistry and materials science. It appears in historical industrial contexts alongside feedstock chemicals like ammonia, methanol, and formaldehyde and features in regulatory discussions by agencies such as national chemical safety administrations and international transport organizations.
Industrial production routes for monomethylamine typically derive from methanol and ammonia via catalytic synthesis techniques used by chemical companies and petrochemical complexes. Common processes include gas-phase catalytic methylation over solid acid catalysts and amination reactions developed in corporate research laboratories and chemical engineering departments. Alternative laboratory syntheses employ methylation reactions of ammonia using methyl halides or reductive amination strategies popular in academic organic chemistry and pharmaceutical process development. Scale-up and continuous-flow implementations have been described in chemical engineering literature and adopted by specialty chemical manufacturers and process development firms.
Monomethylamine is a colorless gas at ambient temperature with a characteristic ammoniacal odor and exhibits hydrogen-bonding behavior similar to other low-molecular-weight amines studied in physical chemistry and thermodynamics. Its boiling point and vapor pressure are relevant to transport regulations overseen by international maritime and aviation authorities, and its miscibility with water and common organic solvents is exploited in unit operations by chemical plants and research laboratories. As a nucleophilic base it participates in acid–base equilibria studied in analytical chemistry and physical organic chemistry and is routinely characterized by spectroscopic techniques in university chemistry departments and industrial quality control laboratories.
Monomethylamine is an intermediate in the manufacture of pharmaceuticals, agrochemicals, and solvents used by pharmaceutical companies, agrochemical corporations, and fine-chemical producers. It serves as a building block for active pharmaceutical ingredients developed in medicinal chemistry programs at biotech firms and universities, and in the synthesis of herbicides and pesticides produced by agribusiness companies. Applications extend to surfactant production in consumer goods companies, corrosion inhibitors in petrochemical installations, and specialty reagents in research institutes and chemical suppliers.
Toxicological profiles for monomethylamine are maintained by public health institutions, occupational safety agencies, and toxicology research centers; exposures can cause irritation to the respiratory tract and mucous membranes and systemic effects managed by clinical toxicologists and emergency medicine practitioners. Workplace exposure limits are set by occupational health bodies and enforced by labor agencies, and industrial hygiene practices are implemented by safety officers and environmental health departments. Transportation and storage are regulated by international transport organizations and national authorities, and safety data sheets provided by chemical distributors and manufacturers guide handling, personal protective equipment, and emergency response.
Environmental fate studies conducted by environmental agencies, conservation organizations, and academic ecotoxicologists examine the persistence, biodegradation, and atmospheric chemistry of monomethylamine. It participates in nitrogen cycling processes relevant to wastewater treatment plants managed by municipal utilities and to atmospheric reactions investigated by climate research centers and environmental monitoring networks. Regulations affecting emissions and effluent limits are promulgated by environmental protection agencies and regional authorities, and remediation strategies are developed by environmental engineering firms and research consortia.
Monomethylamine undergoes alkylation, acylation, and condensations that are exploited in synthetic routes developed at chemical companies, university laboratories, and contract research organizations. Key derivatives include dimethylamine and trimethylamine formed via methylation pathways studied in synthetic organic chemistry, and amide and Schiff base products prepared in medicinal chemistry and materials science projects. Its reactivity under reductive amination and Mannich-type conditions is used in the synthesis of heterocycles and complex molecules pursued by pharmaceutical research teams, chemical manufacturers, and academic research groups.
Category:Amines