64-20-0 Usage
Chemical Properties
SLIGHTLY GREY CRYSTALLINE POWDER
Uses
Different sources of media describe the Uses of 64-20-0 differently. You can refer to the following data:
1. Tetramethylammonium bromide acts as an ion pair reagent. It is used as a surface-active agent and an active ingredient for conditioners. Further, it is used as a softner for textiles and paper products. It is also employed as a disinfection agent, sanitizer, antimicrobial and antistatic agent. In addition to this, it plays in important role as a phase transfer catalyst in synthetic chemistry.
2. Tetrabutylammonium bromide (TBAB) may be used in the molten state in the following processes:Synthesis of (2S)-5-(3-phenyl-2-phthalimidylpropanoylamino)isophthalic acid.Synthesis of alkyl-substituted pyrroles in the absence of catalyst and organic solvent.Synthesis of dithioacetals from acetals by transthioacetalisation in a solvent free environment.Synthesis of polyamides (PAs) by the polymerization of terephthalic acid and diisocyanates.Catalyze the addition of thiols to conjugated alkenes.Dehydrochlorination of poly(vinyl chloride).
Definition
ChEBI: The bromide salt of tetramethylammonium.
General Description
Tetrabutylammonium bromide is a quaternary ammonium compound that is widely used as a phase transfer catalyst. Absolute viscosities of its aqueous solutions have been measured at various temperatures (20,25 and 30°C). Various physical properties (activity coefficient up to saturation, conductance, density and solubility in water) of TMABr have been evaluated.
Purification Methods
Crystallise the bromide from EtOH, EtOH/diethyl ether, MeOH/acetone, water or from acetone/MeOH (4:1) by adding an equal volume of acetone. It is dried at 110o under reduced pressure or at 140o for 24hours. [Beilstein 4 IV 145.]
Check Digit Verification of cas no
The CAS Registry Mumber 64-20-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 6 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 64-20:
(4*6)+(3*4)+(2*2)+(1*0)=40
40 % 10 = 0
So 64-20-0 is a valid CAS Registry Number.
InChI:InChI=1/C4H12N.BrH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
64-20-0Relevant articles and documents
Lichtin,Rao
, p. 2417,2419 (1961)
NEUTRAL LAYER POLYMER COMPOSITION FOR DIRECTED SELF ASSEMBLY AND PROCESSES THEREOF
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Page/Page column, (2014/01/08)
The present invention relates to a novel polymeric composition comprising a novel polymer having two or more repeat units and a terminus having the structure (1): wherein R1 represents a C1-C20 substituted or unsubstituted alkyl group, w is a number from 1-8, X is oxygen (O) or nitrogen (N), and Rd is a reactive group. The invention also relates to a process for forming a pattern using the novel polymeric composition. The invention further relates to a process of making the novel polymer.
Synthesis of biobased N-methylpyrrolidone by one-pot cyclization and methylation of γ-aminobutyric acid
Lammens, Tijs M.,Franssen, Maurice C. R.,Scott, Elinor L.,Sanders, Johan P. M.
experimental part, p. 1430 - 1436 (2010/09/05)
N-Methylpyrrolidone (NMP) is an industrial solvent that is currently based on fossil resources. In order to prepare it in a biobased way, the possibility to synthesize NMP from γ-aminobutyric acid (GABA) was investigated, since GABA can be obtained from glutamic acid, an amino acid that is present in many plant proteins. Cyclization of GABA to 2-pyrrolidone and subsequent methylation of 2-pyrrolidone to NMP was achieved in a one-pot procedure, using methanol as the methylating agent and a halogen salt (i.e. ammonium bromide) as a catalyst. A selectivity above 90% was achieved, as well as a high conversion. Methylation of 2-pyrrolidone could also be done with dimethyl carbonate, but then the selectivity for NMP was less (67%).
The synthesis of quaternary ammonium salts from ammonium salts and dialkyl carbonate
Zheng, Zhuoqun,Wu, Tinghua,Zhou, Xiaoping
, p. 1864 - 1865 (2008/03/14)
Quaternary ammonium salts were synthesized from ammonium salts and dialkyl carbonates over an ionic liquid catalyst 1-ethyl-3-methylimidazolium bromide. The Royal Society of Chemistry 2006.
