Тетраметиламмоний-формиат

Description

Tetramethylammonium formate is a quaternary ammonium salt of formic acid, a liquid that is completely miscible with water. The product is most often supplied in the form of a 30% aqueous solution of tetramethylammonium formate (for example, under the brand name N-625 in the line of reagents for the electronics industry). The constant positive charge of quaternary nitrogen, independent of the acidity of the medium, determines the key areas of application of the substance - from phase transfer catalysis to high-purity process solutions for microelectronics.

Basic Attributes

• CAS No: 59138-84-0
• Chemical formula: C4H12N CHO2 (C5H13NO2)
• English name: Tetramethylammonium formate
• Synonyms: Methanaminium N,N,N-trimethyl-formate (1:1), Fibrogenin, Forgenin, Tonoformin, NSC 118059
• Molecular weight: 119.16; exact mass 119.095
• BRN: 3916177
• EU number: 261-622-8
• SNB number: 118059
• DSSTox ID: DTXSID7069312
• PSA: 40.1

Physico-chemical characteristics

• Appearance: Liquid
• Density: 1.02 g/ml at 25 °C
• Boiling point: 102°C
• Refractive index: n20/D 1.364
• Solubility in water: completely miscible with water

Safety Information

• Transport codes: NON-H (not dangerous) for all types of transport
• Hazard class code: 36/37/38
• Safety instructions: 26-36
• RTECS Number: BS7960000
• Marks: Xi

Scope of application

Used as a synthetic reagent and phase transfer catalyst. The compound is classified among ammonium salts and is used in industrial processes, including the role of a precursor in the preparation of tetramethylammonium hydroxide solutions by electrolysis and catalytic reactions.

• catalyst for the interphase transfer of formate anions between the aqueous and organic phases of the reaction mixture
• component of high-purity process solutions for the production of semiconductors and electronic components
• precursor for the electrochemical preparation of tetramethylammonium hydroxide
• reagent for laboratory and industrial organic synthesis

Chemical nature

As a quaternary ammonium salt, the substance does not contain a proton on the nitrogen atom, and therefore carries a constant positive charge regardless of the pH of the solution - unlike protonated amines, whose degree of ionization depends on the acidity of the medium. The formate anion remains weakly basic and easily participates in charge transfer reactions, which determines the catalytic activity of the compound in interphase chemical processes.

Storage and transportation

Store in an airtight container in a cool, dry place. Transport code NON-H means there are no requirements for special dangerous transportation. When working, wear gloves and eye protection, since the Xi mark indicates irritant properties.