| TETRABUTYL AMMONIUM BROMIDE | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 1643-19-2 |
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| EINECS NO. | 216-699-2 | |
| FORMULA | [CH3(CH2)3]4NBr | |
| MOL WT. | 322.38 | |
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H.S. CODE |
2923.90 | |
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TOXICITY |
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| PRICE | U$6,500/mt for 5mt lot | |
| SYNONYMS | Tetra-n-butylammonium bromide; | |
| 1-Butanaminium, N,N,N-tributyl-, bromide; Tetra-N-butyl ammonium bromide; TBAB; | ||
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | White to off white crystalline powder, odorless | |
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MELTING POINT |
103 - 104 C | |
| BOILING POINT |
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| SPECIFIC GRAVITY | ||
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SOLUBILITY IN WATER |
600 g/l at 20 C | |
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pH |
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AUTOIGNITION |
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| VAPOR DENSITY | ||
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NFPA RATINGS |
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REFRACTIVE INDEX |
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| FLASH POINT | Not expected to be a fire hazard | |
| STABILITY |
Stable under ordinary conditions (Hygroscopic) | |
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GENERAL DESCRIPTION & APPLICATIONS |
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Quaternary ammonium compounds are any of a group of ammonium salts in which
organic radicals have been substituted for all four hydrogens of the original
ammonium cation. They has a central nitrogen atom which is joined to four
organic radicals and one acid radical. The organic radicals may be alkyl, aryl,
or aralkyl, and the nitrogen can be part of a ring system. They are prepared by
treatment of an amine with an alkylating agent. They show a variety of physical,
chemical, and biological properties and most compounds are soluble in water and
strong electrolytes. In addition to their tendency of locating at the interface
of two phases (liquid–liquid or solid–liquid) to introduces continuity between
the two different phase, they have properties of disrupting micro-organisms'
cell processes. These compounds are used as ;
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| SALES SPECIFICATION | ||
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POWDER |
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APPEARANCE |
White to off white crystalline powder | |
| ASSAY |
99.0% | |
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FREE AMINE |
0.5% max | |
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ASH |
0.5% max | |
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MOISTURE |
0.5% max | |
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50% SOLUTION |
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APPEARANCE |
Clear to pale yellow liquid | |
| ASSAY |
50.0% min | |
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FREE AMINE |
1.0% max | |
| TRANSPORTATION | ||
| PACKING | ||
| HAZARD CLASS | Not regulated | |
| UN NO. | ||
| PRICE INDICATION | ||
| USD45/kg CFR
by sea for the quantity 25kgs shipment. USD30/kg CFR by sea for the quantity 50kgs shipment. USD6,500/mt CFR by sea for 5mt shipment |
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| OTHER INFORMATION | ||
| Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26/37/39 | ||
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GENERAL DESCRIPTION OF PHASE TRANSFER CATALYSIS |
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| 'Phase transfer catalysis (PTC)' methodology is a powerful tool improving process efficiency, product selectivity and providing mild reaction conditions in organic chemical reactions. In many chemical reaction situations, there are different species (immiscible liquids or solid and liquid) which don't react each other due to separation by an interface. Small quantity of ‘phase-transfer catalyst’, involves a substrate (soluble in the organic layer) and an anionic reagent or a nucleophile (dissolved in the aqueous layer), extracts one of the reactants, most commonly an anion, across the interface into the other phase where reaction can take place with the substrate and reaction can proceed. The quaternary ammonium salts can carry the nucleophile from the aqueous to organic phase and are used as the most commonly used as phase-transfer catalyst’. The phosphonium derivatives favoring higher thermal stability property are also used. Crown ethers and polyethylenglycol compounds are also widely used in this application. | ||
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