154636-59-6

Basic information

• Product Name: Tetramethylammonium hydroxide
• Synonyms: N,N,N-Trimethylmethanaminium Hydroxide; TMAH; hydroxydedetetramethylammonium; megapositcd14; Methanaminium,N,N,N-trimethyl-,hydroxide; n,n,n-trimethyl-methanaminiuhydroxide; nmd3; Tetramethyl ammonium hydroxide; TMAH
• CAS NO: 154636-59-6
• Molecular Formula: C₄H₁₃NO
• Molecular Weight: 91.15
• EINECS: 200-882-9
• Mol File: 154636-59-6.mol
• Article Data: 13

Chemical Properties

• Boiling Point: 110℃
• Flash Point: 6℃
• Density: 1.016 (25% aq.)
• Refractive Index: 1.3806
• CAS DataBase Reference: Tetramethylammonium hydroxide(CAS DataBase Reference)
• NIST Chemistry Reference: Tetramethylammonium hydroxide(154636-59-6)
• EPA Substance Registry System: Tetramethylammonium hydroxide(154636-59-6)

Safety Data

• Hazard Codes: T:Toxic;;
• Statements: R20/21/22:; R34:
• Safety Statements: S26:; S36/37/39:; S45:
• Hazardous Substances Data: 154636-59-6(Hazardous Substances Data)

Upstream product

• 75-57-0 tetramethlyammonium chloride 
• 74-83-9 methyl bromide 
• 124-40-3 dimethyl amine 
• 74-88-4 methyl iodide 
• 67-56-1 methanol 
• 616-38-6 carbonic acid dimethyl ester 
• 75-50-3 trimethylamine 
• 80526-82-5 tetramethylammonium sulfate 
• 598-58-3 methyl nitrate 
• 58345-96-3 Tetramethylammonium hydrogen carbonate 
• 13448-18-5 trimethyl-vinylammonium cation 
• 74-87-3 methylene chloride 
• 74-86-2 acetylene 
• 74-89-5 methylamine 

Downstream Products

• 4954-14-7 (8R,9S,13S,14S,17S)-3,17-dimethoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene 
• 21379-15-7 Me₄NO₂PHPh 
• 1572949-29-1 C₇H₈NO₂S^(1-)*C₄H₁₂N⁽¹⁺⁾ 
• 7440-67-7 zirconium(IV) oxide 
• 661-36-9 tetramethylammonium tetrafluoroborate 
• 1474-53-9 3-methoxy-estra-1,3,5(10)-triene-16α,17β-diol 
• 30720-65-1 2,6-Diamino-9-methylpurine 
• 42484-34-4 2-amino-1,9-dimethylpurin-6-one 
• 26758-00-9 1,7-dimethylguanine 
• 61580-66-3 2-amino-6-methoxy-9-methyl-9H-purine 
• 19143-67-0 3,7-dimethylguanine 
• 89999-10-0 guanosine 5'-monophosphate di-tetramethylammonium salt 
• 25284-83-7 methanetellurol 

Relevant articles and documents

Synthesis method of N-hydroxymethyl acrylamide

The invention relates to a synthesis method of N-hydroxymethyl acrylamide. By taking solid acrylamide and paraformaldehyde as raw materials, adopting a supported quaternary ammonium base catalyst, and selectively activating an amino group in the acrylamide by controlling the size of a hydrocarbyl group connected with quaternary ammonium base and utilizing the steric effect of hydrocarbyl, the self-polymerization behavior in the production process of the N-hydroxymethyl acrylamide is reduced, and the N-hydroxymethyl acrylamide monomer is efficiently obtained. The supported quaternary ammonium alkali is used as the catalyst, the reaction condition is mild, the selectivity is high, system polymerization caused by the traditional inorganic alkali liquor reaction is effectively avoided, and the reaction system can realize high-efficiency conversion of raw materials without adding a large amount of water as a reaction solvent, so that the yield is improved; and the supported quaternary ammonium base catalyst has the characteristics of large specific surface area, high reaction activity and the like, greatly reduces the use amount of solvent water in the reaction process, is convenient to remove in the post-treatment process, and reduces sewage discharge.

Quaternary ammonium salt type perrhenate ionic liquid and synthetic method and application thereof

The invention discloses quaternary ammonium salt type perrhenate ionic liquid and a synthetic method and application thereof. The method comprises the steps that alkyl ammonium bromide and KOH are reacted to obtain quaternary ammonium base, the quaternary ammonium base and perrhenate (NH4ReO4) metal salt are subjected to a replacement reaction, and quaternary ammonium salt type perrhenate ionic liquid is obtained. The synthesized quaternary ammonium salt type perrhenate ionic liquid is a pollution-free catalyst, has catalysis activity for lignocellulose, can be used as the catalyst for degrading lignocellulose to prepare reducing sugar, and the high yield is obtained.

Temperature effect on the molecular interactions between ammonium ionic liquids and N, N-dimethylformamide

In view of the wide scope of molecular interactions between the highly polar compound of N,N-dimethylformamide (DMF) and ammonium ionic liquids (ILs), we have measured thermophysical properties such as densities (??) and ultrasonic sound velocities (u) over the whole composition range at temperatures ranging from 25 to 50 ?°C under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, we predicted the excess molar volume (VE) and the deviations in isentropic compressibilities (??Ks) as a function of the concentration of IL. These results are fitted to the Redlich-Kister polynomials. The materials investigated in the present study included the hydroxide series of ammonium ILs of tetramethylammonium hydroxide [(CH 3)4N][OH] (TMAH), tetraethylammonium hydroxide [(C 2H5)4N][OH] (TEAH), and tetrapropylammonium hydroxide [(C2H7)4N][OH] (TPAH). The intermolecular interactions and structural effects were analyzed on the basis of the measured and the derived properties. A qualitative analysis of the results is discussed in terms of the ion-dipole and ion-pair interactions, and hydrogen bonding between ILs and DMF molecules and their structural factors. ? 2010 American Chemical Society.