DIPHENYL BLACK

TiCC H ) [14724-88-0] Ti(II) diphenyl black sohd pyrophoric gives phenyhnercury chloride with HgCl2... 

Diphensiiure, /. diphenic acid. Diphenyl-arsenchloriir, n. diphenylarseni oua chloride (chlorodiphenylarsine). -borchlorid, n, diphenylboron chloride, -schwarz, n. diphenyl black,... 

Aged aniline black, prussiate black, one bath aniline black, steam aniline black, diphenyl black. 

Diols, 109 1,3,4-Dioxazolones, 109 Dioxetanes, 109 Dioxygenyl polyfluorosalts, 109 Diphenyl black, 109 Diplumbanes, 110... 

P-Aminodiphienylamlne Phenyl-p-phenyl-en iamine, Diphenyl Black Base P). 

N-Phenyl-1,4-benzenediamine, 9CI. N-Phenyl-p-phenylenediamine. Diphenyl black base P. p-Semidine [101-54-2]... 

Diphenyl black base P, see A-00166 Diphenylborinic acid 2-aminoethyl ester, see... 

The nitrosamines are insoluble in water, and the lower members are liquid at ordinary temperatures. The separation of an oily liquid when an aqueous solution of an amine salt is treated with sodium nitrite is therefore strong evidence that the amine is secondary. Diphenylnitrosoamine is selected as a preparation because it is a crystalline substance and is thus easier to manipulate on a small scale than one of the lower liquid members. For this preparation, a fairly pure (and therefore almost colourless) sample of diphenyl-amine should be used. Technical diphenylamine, which is almost black in colour, should not be employed. 

Compound parts polymer, 100 Naugard 445 (substituted diphenyl amine), 2 Armeen 18D (octadecyl amine), 0.5 stearic acid, 2 Vanfre VAM (complex organic alkyl acid), 0.5 SRE Carbon Black (N774), 100 DIAK 1 (hexamethylenediamine), 1.25 and di-o-tolylguanidine, 4. 

Powdery PNT-N was obtained when the unfluorinated compound was refluxed in diphenyl ether solution. When the temperature was raised to 196°C for 24 h, the amount of solid increased with time and there was no observable change in the appearance ofthe solid. However, in the case ofPNT-F, a black solid formed suddenly between 120- 150°C, and no additional solid formed even when the temperature was increased to 190°C. Apparently the fluorinated derivative reacts much more rapidly and exothermically than the hydrocarbon analogue. Care should be exercised when heating such compounds in sealed glass tubes. 

Benzene solution/ 170°C50 Electrochemical reaction47 Benzene solution/ 170°C (this work) Diphenyl ether/200°C (this work) CVD 350°C/0.4 Torr (this work) 500°C (10% weight loss) (N2) 546°C 420°C (10% weight loss) (N2) 460°C (10% weight loss) (N2) 570°C (N2) >900°C Brown powder NA Purple film >900°C Brown powder >900°C Black powder NA Transparent film... 

Nitrophenyl Phenyl Tellurium5 Under nitrogen, 0.29 g (0.70 mmol) of diphenyl ditellurium are reduced with 0.03 g (0.73 mmol) of sodium borohydride in 5 ml of hexamethylphosphoric triamide at 70-80° with stirring for 0.5 h. Then 0.14 g (0,73 mmol) of copper(l) iodide are added whereupon the mixture turns black. 0.18 g (0.73 minol) of l-iodo-2-nitrobenzene are added and the mixture is stirred well and heated at 80 90° for 1.5 h. The mixture is cooled, water is added, the whole is extracted with diethyl ether, the extract is washed with concentrated sodium chloride solution, and the organic layer is dried with anhydrous sodium sulfate. The solvent is evaporated under vacuum and the residue is chromatographed on a short column of alumina with hexane as eluent. Fractions containing the product are combined and evaporated to dryness and the residue is rccrystallized from ethanol yield 0.22 g (95%) m.p. 94°. 

Ni Catalyst from Ni Formate (by Sasa).41 A mixture of 2.6 g of nickel formate dihydrate (0.81 g Ni) and 20 g of freshly distilled diphenyl ether (or biphenyl or a mixture of diphenyl ether and biphenyl) is heated under stirring. The water of crystallization is removed with diphenyl ether. At 250°C, when diphenyl ether starts to boil, the mixture becomes black. After the decomposition for 2 h in boiling diphenyl ether, the nickel catalyst is filtered off at 40-50°C. The catalyst may be used immediately or after washing with alcohol or benzene. 

To a 500-ml reaction flask were added, l,l-diphenyl-2-propyn-l-ol (0.1 mol, 20.8 g, Farchan Laboratories), 2-naphthol (0.11 mol, 15 g) and 200 ml of toluene. The mixture was warmed to 55°C with stirring while dodecylbenzenesulfonic acid was added dropwise until a permanent dark red-black color was obtained. The temperature was maintained at 55°C until thin-layer chromatography (TLC) indicated the reaction was complete (approximately 1 h). Then the mixture was poured into an equal volume of 10% aqueous sodium hydroxide, shaken, and the organic fraction separated. The toluene solution was washed with water, phase separated, and the solvent removed on a rotary evaporator. The resulting light tan crystals were slurried with hexane, suction filtered, and dried to yield 18.4 g of product with a melting point range of 156-158°C. 

Many porous organic polymers are derived from the stationary phase used to pack GC columns. Tenax is one such example. This is a macroporous polymer obtained from diphenyl p-phenylene oxide (DPPO). Generally, this polymer is hydrophobic and does not retain water. However, it exhibits some ability to adsorb polar compounds. As a result of its low surface area (30 m /g), its adsorption capacity is limited and very volatile compounds are not trapped. Therefore, it is an appropriate material for trapping heavier compounds with more than four carbon atoms. Co-precipitated graphitized carbon black and Tenax (in the proportion 23 % to 77 %) was introduced on the market as Tenax GR. This adsorbent combines the advantages of both materials and is approximately twice as effective as Tenax TA [50]. 

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