ChemicalBook >> CAS DataBase List >>Tetramethylammonium bromide
Tetramethylammonium bromide
- CAS No.
- 64-20-0
- Chemical Name:
- Tetramethylammonium bromide
- Synonyms
- TMAB;[M4N]Br;Tetramethylammoniumbromid;tetramethyl-ammoniubromide;Ammonium, tetramethyl-, bromide;(dimethylamino)-methymethobromide;n,n,n-trimethyl-methanaminiubromide;Tetramethylammonium Bromide, Reagent;TETRAMETHYLAMMONIUM BROMIDE, FOR IPC;Methyl, (dimethylamino)-, methobromide
- CBNumber:
- CB8256627
- Molecular Formula:
- C4H12BrN
- Molecular Weight:
- 154.05
- MDL Number:
- MFCD00011626
- MOL File:
- 64-20-0.mol
- MSDS File:
- SDS
Last updated:2025-09-25 17:15:13
| Product description | Number | Pack Size | Price |
| Tetramethylammonium bromide 98% | 195758 | 100g | $37.3 |
| Tetramethylammonium bromide 98% | 195758 | 500g | $134 |
| Tetramethylammonium Bromide >97.0%(T) | T0135 | 25g | $16 |
| Tetramethylammonium Bromide >97.0%(T) | T0135 | 500g | $73 |
| Tetramethylammonium bromide for ion pair chromatography, ≥99.0% (AT) | 87708 | 10g | $404 |
| More product size | |||
| Melting point | >300 °C (lit.) |
|---|---|
| Boiling point | >360°C |
| Density | 1,56 g/cm3 |
| bulk density | 450kg/m3 |
| refractive index | 1.4379 (estimate) |
| storage temp. | Store below +30°C. |
| solubility | H2O: 0.1 g/mL, clear, colorless |
| form | Crystalline Powder |
| color | Slightly gray |
| PH | 5.5-6.5 (100g/l, H2O) |
| Odor | Odorless |
| Water Solubility | soluble |
| Sensitive | Hygroscopic |
| λmax |
λ: 240 nm Amax: 0.06 λ: 250 nm Amax: 0.03 λ: 260 nm Amax: 0.02 λ: 500 nm Amax: 0.02 |
| BRN | 3620955 |
| CAS DataBase Reference | 64-20-0(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 6L9NE9609P |
| NIST Chemistry Reference | Tetramethylammonium bromide(64-20-0) |
| EPA Substance Registry System | Methanaminium, N,N,N-trimethyl-, bromide (64-20-0) |
| UNSPSC Code | 12352107 |
| NACRES | NB.21 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H300 | |||||||||
| Precautionary statements | P301+P330+P331+P310 | |||||||||
| Hazard Codes | T | |||||||||
| Risk Statements | 25-36/37/38 | |||||||||
| Safety Statements | 26-28-36-45-37/39-28A | |||||||||
| RIDADR | UN 2811 6.1/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | BS7600000 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 6.1 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29239000 | |||||||||
| Limited Quantities | 100ml (liquid) or 0.5 Kg (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml) | |||||||||
| NFPA 704 |
|
Tetramethylammonium bromide price More Price(26)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 195758 | Tetramethylammonium bromide 98% | 64-20-0 | 100g | $37.3 | 2025-07-31 | Buy |
| Sigma-Aldrich | 195758 | Tetramethylammonium bromide 98% | 64-20-0 | 500g | $134 | 2025-07-31 | Buy |
| TCI Chemical | T0135 | Tetramethylammonium Bromide >97.0%(T) | 64-20-0 | 25g | $16 | 2025-07-31 | Buy |
| TCI Chemical | T0135 | Tetramethylammonium Bromide >97.0%(T) | 64-20-0 | 500g | $73 | 2025-07-31 | Buy |
| Sigma-Aldrich | 87708 | Tetramethylammonium bromide for ion pair chromatography, ≥99.0% (AT) | 64-20-0 | 10g | $404 | 2025-07-31 | Buy |
Tetramethylammonium bromide Chemical Properties,Uses,Production
Chemical Properties
SLIGHTLY GREY CRYSTALLINE POWDER
Uses
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.
Uses
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.]
Tetramethylammonium bromide Preparation Products And Raw materials
Raw materials
Preparation Products
Global( 488)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Sichuan Zhuoyu Yantang Technology Co., Ltd. | +8613288715578 | sales@sichuanzyyt.com | China | 12247 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 | faithe@yan-xi.com | China | 5853 | 58 |
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| Anhui Ruihan Technology Co., Ltd | +8617756083858 | daisy@anhuiruihan.com | China | 973 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20175 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21620 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 | jack.li@time-chemicals.com | China | 1803 | 55 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 | sales@sdzschem.com | China | 2930 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28172 | 58 |
View Lastest Price from Tetramethylammonium bromide manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-10-17 | Tetramethylammonium bromide
64-20-0
|
US $0.00 / KG | 1KG | 99%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | |
 |
2025-09-25 | Tetramethyl Ammonium Bromide
64-20-0
|
US $5.00-0.50 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd | |
 |
2025-08-08 | Tetramethylammonium bromide
64-20-0
|
US $0.00 / KG | 1KG | 99% | 50000KG/month | Sichuan Zhuoyu Yantang Technology Co., Ltd. |
-
- Tetramethylammonium bromide
64-20-0
- US $0.00 / KG
- 99%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- Tetramethyl Ammonium Bromide
64-20-0
- US $5.00-0.50 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Tetramethylammonium bromide
64-20-0
- US $0.00 / KG
- 99%
- Sichuan Zhuoyu Yantang Technology Co., Ltd.
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64-20-0
64-20-2
CH34NBr
C4H12NBr
Phase Transfer Catalysts
Synthetic Reagents
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HPLC
Ammonium Salts
Analytical Chromatography Product Catalog
Ammonium Bromides (Quaternary)
Quaternary Ammonium Compounds
Ammonium Bromides (Quaternary)
Quaternary Ammonium Compounds
quarternary ammonium salts
Ammonium Salts
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AnionicHPLC
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