Ethyl cyanurate

Generally, flame retardants for engineering PET compositions are based on bromine-containing compounds (such as brominated polycarbonate, decabro-modiphenyl oxide, brominated acrylic, brominated polystyrene, etc.). Such compounds are available commercially (such as from the Ethyl Chemical Corporation, Great Lakes Chemical Corporation, Dead Sea Bromine Company, etc.) In addition, the flame-retardant package generally contains a synergist, typically sodium antimonate. PET may also be flame-retarded with diarylphosphonate, melamine cyanurate or red phosphorus. 

Pelizzetti et al. (1990) investigated the photocatalytic degradation of atrazine in solution in the presence of suspended titanium dioxide as a catalyst under simulated sunlight. Degradation was rapid but mineralization did not occur. Intermediate compounds included 6-hydroxy-A/-ethyl-/V -(l-methylethyl)-5 triazine-2,4-diamine, 2,4-diamino-6-chloro-A/-(l-methylethyl)-5-triazine, 2,4-di-amino-6-chloro-/V-ethyl-5-triazine, 2,4-diamino-6-chloro-5-triazine, 2,4-diamino-6-hydroxy-5-tri-azine, 2-amino-4,6-dihydroxy-5-triazine, 2-amino-4-hydroxy-6-chloro-5-triazine, 2,4-dihydroxy-6-chloro-s-triazine, 6-chloro-/V-acetyl-/V -(l-methylethyl)-5-triazine-2,4-diamine, and cyanuric acid as the final product. 

Rather strange results were obtained when cyanuric chloride was heated at 90 and 100°C, respectively, with 9-ethyl- and 9-phenylcarbazoles. A 1 1 mixture of N-substitution (presumably with loss of the original ethyl group) and C-substitution products were formed in very low yield from 9-ethyl-carbazole and, also in very low yield, mainly 47 from 9-phenylcarbazoIe. " ... 

Describes the estimation of RDX HMX by nonaqueous titrimetry analysis of HMX, Poly (2,2-dinitropropyl-a cry late, silica, and ethyl methyl 4,4-din itropentanoate in expls determination of PETN silica in LX-02-1 spectrophoto-metric detn of acetyl tributyl citrate in ex-trudable expl LX-02-1 analysis of a mixt of HMX, Viton oxamide analytical procedure for RDX in RX-05 analysis of tungsten HMX in RX-12 analysis of a mock expl 90010 analysis of a mock material for LX-0-4-1 and determination of cyanuric acid, melamine, and Viton in mixt LM-04-0... 

Cyclotrimerization of nitriles is the best-known route to 1,3,5-triazines (for a detailed discussion see CHEC 2.18). The reaction is of value for preparing the symmetrical derivatives only. Nevertheless, many important triazines, such as cyanuric chloride, are made in this way. Other cyclotrimerization reactions are useful thus, an easy route to 1,3,5-triazine involves heating ammonium acetate with ethyl orthoformate. 

The literature reports direct grafting by gamma-rays exposure of Nylon fibers or films to the following monomers carbon monoxide (/65), ethylene (157), propylene (157), acetylene (166), butadiene (157.162,163), styrene (158, 161,163,167,168), vinyl chloride (157,163), vinyl fluoride (169-172), vinyl acetate (161,163,173), vinyl propionate (161), vinyl butyrate (161), vinyl crotonate (161), vinyl 2-ethyl hexanoate (161), acrylic add (173,174), methyl acrylate (162, 163), ethyl acrylate (162,163), allyl acrylate (163), methyl methacrylate (28,161, 163,164), butyl methacrylate (161), acrylamide (158), methylol acrylamide (163), acrylonitrile (157,160-163, 167, 175-179), divinyl sulfone (161), vinyl pyridine (167,173), vinyl pyrrolidone (28) and triallyl cyanurate (158). 

In subsequent steps, DAS is treated in acidic aqueous solution at 0-5 °C with cyanuric chloride dissolved in ethyl methyl ketone. The remaining chlorine atoms are then replaced by aliphatic, cycloaliphatic, or aromatic amines at 15-35 °C and then at ca. 60 °C. The addition of electrolytes (e.g., sodium carbonate, sodium hydroxide) or water-soluble aprotic solvents at 90 to 100 °C or above leads to the desired 3 crystal modification, which is nearly colorless. 

Cyanuric Acid.—That iso-cyanic acid has the constitution given to it is established by the constitution of the alkyl derivatives which are not true esters (p. 73) and also by its relation to cyanuric acid. This latter acid is a polymer of iso-cyanic acid, viz., (HNCO)3. It is obtained by heating urea and the reactions will be considered presently when we study this compound. This source of the acid is the basis of the name cyan-uric acid. It is a solid crystallizing from water solution in prisms which contain two molecules of water of crystallization. Like iso-cyanic acid cyanuric acid yields alkyl derivatives of two isomeric forms, corresponding to polymers of cyanic and iso-cyanic acid derivatives. The ethyl derivatives have the following constitutions ... 

Diethyl urea-1,3-dicarboxylate (1) reacts with liquid ammonia in the presence of small amounts of water to form ethyl biuret-l-carboxylate (2), which readily yields cyanuric acid (3) by loss of ethanol.367... 

Ozonization at neutral pH results in the removal of both the isopropyl and the ethyl side chains. At higher pH values and with prolonged ozonization the end product is cyanuric acid. Complete decomposition to carbon dioxide is not observed.22 Titanium(IV) oxide and zinc(II) oxide in combination with UV irradiation oxidize atrazine to cyanuric acid following the same pathway as the ozonization process. 

Acetonitril Acetonitrile AI3-00327 CCRIS 1628 Cyanomethane Cyanure de methyl EINECS 200-835-2 Ethyl nitrile HSDB 42 Methane, cyano- Methane-carbonitrile Methyl cyanide Methylkyanid NCI-C60822 NSC 7593 RCRA waste number U003 UN1648 USAF EK-488. Solvent for hydrocarbon extraction processes, especially for butadiene intemnediate catalyst for separation of fatty acids from vegetable oils manufacture of synthetic pharmaceuticals. Liquid mp = -43.8° bp = 81.6° d20 =... 

AI3-60291 CCRIS 6113 EINECS 212-660-9 HSDB 6135 Isocyanuric acid tris(2-hydroxyethyl) ester NSC 11680 Theic s-Triazine-2,4,6(1 H,3H,5H)-trione, 1,3,5-tris(2-hydroxyethyl)- Tris(p-hydroxyethyl) isocyanurate Tris(2-hydroxyethyl)-1,3,5-triazinetrione Tris(2-hydroxy-ethyl) isocyanurate N,N, N -Tris(2-hydroxyethyl) isocyanurate Tris(2-hydroxyethyl)-s-triazine-2,4,6-trione Tris(2-hydroxyethyl)cyanurate Tris(hydroxyethyl) oyanur-ate 1,3,5-Tris(2-hydroxyethyl) isocyanurate 1,3,5-Tris(2-hydroxyethyl) isocyanuric acid 1,3,5-Tris(2-hydroxy-ethyl)triazine-2,4,6-trione. 

Tricyanic acid Tricyanide. See Isocyanuric acid Tricyanogen chloride. See Cyanuric chloride Tricycio [3.3.1.1 (3,7)-] decane-1-carboxylic acid, ethyl ester. See Ethyl tricyclodecanecarboxylate Tricyclodecane methylol acetate CAS 30772-69-1 Properties Flash pt. > 130 C... 

Tribromophenyl allyl ether flame retardant, polyamides Ethylenebis dibromonorbornane dicarboximide Melamine cyanurate Octabromodiphenyl oxide Phosphorus, red Polystyrene, brominated Resorcinol bis (diphenylphosphate) flame retardant, polybutylenes Tetrabromobisphenol A, bis (2,3-dibromopropyl ether) flame retardant, polyester fabrics Methylphosphonic acid, bis [(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl) methyl] ester... 

Ethylene can be free radically copolymerized with vinyl acetate. Copolymerization with 0%-35% vinyl acetate is carried out in bulk at 1000-2000 bar, that of 35%-100%at 100-400 bar in /-butanol, and that of 60%-100%at 1-200 bar in emulsion. Products with vinyl acetate contents of over 10% give shrinkable films those with up to 30% vinyl acetate give thermoplastic films, and those with over 40% vinyl acetate give clear films. Products of still higher vinyl acetate content are elastomers, fusion, and solvent adhesives or modifiers for PVC. The products can be cross-linked with lauroyl peroxide on the addition of, for example, triallyl cyanurate. Copolymers of ethylene and ethyl acrylate have similar properties. 

By passing the vapour of cyanic acid into alcohol, Liebig and Wohler (1830) obtained what they called cyanic ether (ethyl cyanate), but fifteen years later they found that the crystalline product contains neither cyanic acid nor cyanuric acid, and named it allophanic ether, because it is different from what was expected (oAAo , other av p6sy manifest). The constitution of allophanic... 

Cyanuric chloride, formed by the reaction of chlorine with hydrogen cyanide, is used to produce herbicides, optical brighteners, pharmaceuticals, explosives, and surfactants. Ethyl chloride, made by reacting ethylene with HCl, was used to make tetraethyl lead. 

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