Tetraethylene pentamine

Dipping solution II Dissolve 24 ml tetraethylene pentamine and 60 mg butyl-hydroxytoluene in 36 ml dichloromethane. 

For the Ni-Al2C>3 system [27] there was little effect of pH on the amount of incorporation above a pH of 2. However, decreasing the pH below 2 resulted in a sharp decrease in the amount of incorporation. Below a pH of 2.0, reportedly no particle incorporation was obtained for copper plating with SiC or AI2O3 [27], Other researchers [25] found no effect of pH on amount of BaS04 incorporated within a copper matrix, in the presence of tetraethylene pentamine, although in the presence of thallous ions incorporation for the same system was found to increase with pH. 

The conversion of tetralin to a-tetralone may be achieved under aqueous biphasic conditions in the presence of 02, using NiCl2 as a catalyst, as shown in Scheme 9.3 [7], It is necessary to use tetraethylene pentamine (TEPA) as a surface-active ligand, as well as an emulsifier, dodecyl sodium sulfate. Some alcohol and naphthol by-products were also observed, and a radical chain mechanism has been proposed for this reaction. 

UDMH is known to be miscible with the following wafer, benzene, triethyl benzene, toluene, kerosene, ethyl alcohol, isobutyl alcohol, n-butyl ether, n-amyl ether, n-hexyl ether, diethyl ether, petroleum ether, petroleum naphtha, n-heptane, n-hexane, n-octane, n-decane, n-dodecane, n-hexadecane, cyclohexane, 1,2-dimethyl cyclohexane, phenyl cyclohexane, n-tetradecane, trichloroethylene, dichloroethylene, perchloroethylene, 1,1,1-trichloroethane, triethyl amine, ethylenediamine, diethylene triamine, acetonitrile, aniline, cumene, tetra-hydronaphthalene, tetraethylene pentamine, ethylene glycol and hydrazine (Ref 4)... 

Tetraethylene pentamine 163 0.8 4.6 FALSE FALSE FALSE FALSE... 

To a solution of tetraethylene pentamine pentahydrochloride (tetren.5HCl, Aldrich) (1.12 g, 3.0 mmol) dissolved in 20 mL of water is added 600 mg of NaOH (15 mmol, 5 equiv) followed by nickel(II) perchlorate (755 mg, 2.06 mmol) dissolved in 10 mL of water. The mixture is stirred for 20 min. Then silver perchlorate (3.12 g, 15 mmol, 5 equiv) is added in order to eliminate the chloride ions. The solution is left stirring for 1 h in the dark, then the solution is hltered through a glass frit to separate silver chloride. Then 20 mL of acetonitrile is added to the deep blue filtrate. A solution of potassium hexacyanochro-mate(III) (0.110 g, 0.33 mmol) in a minimum of water is added drop by drop, and the solution is left standing for a few days. The red-purple octahedral crystals that form are collected, washed with water, and air-dried (0.540 mg, 63% yield). 

The kinetic effects of C02 in the base catalyzed hydrolysis of some carboxylato amine cobalt(III) complexes have been reported (80-82). In the base catalyzed hydrolysis of oxalatopentaammine-cobalt(III) (80), C02 retarded the reaction due to the formation of a virtually unreactive ion-pair, f (N H .) r, 2 2 COi ]. The equilibrium constant for formation of carbonate ion-pairs with (glycinato-O) (tetraethylene-pentamine)cobalt(III), (81) and (o-methoxybenzoato) (tetraethylenepentamine)cobalt(III) (82) were, however, much smaller than for the oxalatopentamminecobat(III) and a very weak rate retardation and virtually no effect was observed in the base catalyzed hydrolysis of the latter two complexes. 

Diethylene triamine, DETA, i = 1 triethylene tetramine, TETA, i tetraethylene pentamine, TEPA, i = 3... 

This ether forms peroxides on exposure to air in only a few hours.4,5 It can be stabilized by the addition of N-benzyl-p-aminophenol (16 ppm) or 50 ppm of diethylenetriamine, triethylenetetramine, or tetraethylene pentamine. Many examples of explosions of the peroxidized ether have been documented.4,6,7... 

EDA Ethylenediamine b DETA Diethylenetriamine c TETA Triethylenetetramine d TEPA Tetraethylene Pentamine e PEHA Penta-Ethylenehexamine... 

Waters SP-8HR (strong cation exchange, 8 /r particles) Linear amines (spermine, spermidine, triethylene tetramine, diethylene triamine, tetraethylene pentamine) low molecular weight branched aromatic and nonaromatic dendrimers (e.g., PETMA4, DPE-TMA6, PE-DMABzCl4) rHu-BDNF (recombinant human brain-derived neurotrophic factor) 51... 

EDA Ethylenediamine. bDETA Diethylenetriamine. CTETA Triethylenetetramine. dTEPA Tetraethylene pentamine. ePEHA Penta-ethylenehexamine. 

Cumene hydroperoxide Tetraethylene pentamine iert-Butyl hydroperoxide EDTA, 30% solids Tensile impact, ft-lbs/in.2... 

KPMA, potassium polymethacrylate PEI, polyethyleneimines TP, tetraethylene pentamine TT, triethylene tetramine DT, diethylene triamine ED, ethylene diamine,... 

Some pentaamine hgands are shown in (17), (19), and (207-215). Commercially available technical tetraethylene-pentamine is a mixture of linear tetren (207) and branched chain trenen (208), so five-coordinate [Cu(trenen)] + and octahedral [CoCl(tetren)] + can be obtained in reasonable yields from the same polyamine mixture.Alternatively, these ligands can be synthesized in situ from Co complexes of tren (191) ortrien (178), and coordinated amino-acetaldehyde. ... 

SAFETY PROFILE Most cured resins have little or no toxicity. If curing is incomplete there may be residues of highly toxic curing agents such as the organic amines m-phenylene diamine, diethylene triamine, tetraethylene pentamine, and hexamethylene tetramine, as well as phthalic anhydride and related compounds. When heated to decomposition they emit highly toxic fumes. See also various epoxy hardeners and POLYMERS, INSOLUBLE. 

It is claimed that the cross-linked copolymer resin prepared from tetraethylene-pentamine and toluene diisocyanate having a much greater affinity for transition metal ions than for alkaline earth ions is superior to Chelex-100 for the extraction of nickel (Cu, Zn) from sea water. At the natural pH of sea water a nearly quantitative recovery of metal ions seems to be feasible 79). 

The eomparison for hydroxyamines (7A), hydroxyoximes (6A) and tetraethylene-pentamine.s (13A) i.s given in Table 6. The experiments conducted al the optimal pH for the complexation of Cu(II). indicate that the binding of eopper(ll) is the strongest of all the M( 11) series studied. The relative binding strength of the polymers is ... 

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