Azobenzene classification

Until recently, Cur tins classification of sulphonyl azides as rigid or starre azides, that is, incapable of rearrangement, had found few exceptions. The vapour phase pyrolysis of benzenesulphonyl azide at 625° gave a 17-5% yield of azobenzene and traces of azo compound could be obtained in boiling cyclohexanone . Surprisingly, no C—H insertion product was obtained in the latter case, and only about one third of the azide was accounted for . Two products 10 ... [Pg.283]

The nitro-compounds, which are almost the only class in which a monatomic group acts as chromophor, would also be difficult to bring under the above ring classification. There is no doubt, however, that in amido- and hydroxyl derivatives of nitro-bodies there is a certain relationship between the nitro-group and the liydroxyl or amido-group. It is not improbable that the nitro-phenols possess a similar constitution to the nitrosophenols, which are now generally regarded as quinoneoximes. VThe azo-dye-stuffs are a class of bodies the properties of which are not in accordance with their constitution, and this is especially marked in the first member of the series, azobenzene. [Pg.11]

We have studied pMEA, pMAEA and pDRlM in comparison, in order to determine what is the importance of Rau s classification on the photoinduced birefringence. These three polymers have increasing dipole moments, and their comparison clearly indicate that the pseudostilbene -type azobenzenes are the best candidates for photoinduced orientation. Their absorbance in the visible range of the spectrum allows the use of lower power lasers (514 nm), the coincidental absorbances of the cis and trans isomers allows photoexcitation of both trans-cis and cis-trans isomerization processes. Both are necessary for orientation, and the lower the polarity of the azobenzene, the slower the cis-trans thermal isomerization process. The levels, rates and stabilities of the photoinduced birefringence, all are hi er for pDRlM in comparison with the other two, as is the efficiency of the process. Almost all our research is concentrated on the donor-acceptor substituted azobenzenes. [Pg.241]

CAS 3486-30-4 EINECS/ELINCS 222-476-0 Synonyms Acid blue 7, sodium salt Benzenemethanaminium, N-(4-((2,4-disulfophenyl) (4-ethyl (phenylmethyl) amino) phenyl) methylene-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, sodium salt Cl 42080 D C Blue No. 3 Patent blue A Classification Azobenzene Empirical C37H36N2NaOeS2 Properties M.w. 691.86 m.p. 290 C Toxicology LD50 (IP, mouse) 437 mg/kg prevent inh. and direct contact with eyes and skin mutagen TSCA listed Precaution Incompat. with strong oxidants Hazardous Decomp. Prods. Irritating and toxic fumes and gases... [Pg.60]

CAS 6408-78-2 EINECS/ELINCS 229-068-1 Synonyms 1-Amino-9,10-dioxo-4-phenylamino-9,10-dihydroanthracene-2-sulfonic acid, sodium salt 2-Anthracenesulfonic acid, 1-am i no-9,10-d i hyd ro-9,10-d i oxo-4-(phenylamino)-, monosodium salt Cl 62055 Classification Azobenzene Empirical C2oHi4N2NaOsS Properties M.w. 417.39 Toxicology Irritating to eyes, skin, and respiratory system TSCA listed Uses Dye for wool, silk, polyamide, leather, and soaps... [Pg.61]

CAS 5850-35-1 EINECS/ELINCS 227-449-7 Synonyms 4-Amino-5-hydroxy-3-[(m-nitrophenyl) azo]-6-(phenylazo)-2,7-naphthalenedisulfonic acid, 2,7-disodium salt Cl 20460 2,7-Naphthalenedisulfonic acid, 4 amino-5-hydroxy-3-[(3-nitrophenyl) azo]-6-(phenylazo)-, disodium salt Classification Azobenzene Empirical C22Hi4N6Na209S2 Properties M.w. 616.49... [Pg.61]

CAS 2666-17-3 EINECS/ELINCS 220-201-9 Synonyms Alizarine blue A 2-Anthracenesulfonic acid, 1-amino-9,10-dihydro-4-(p-(N-methylacetamido) anilino)-9,10-dioxo-, monosodium salt Cl 62130 Classification Azobenzene Empirical C23HisN3Na06S Properties M.w. 487.45... [Pg.61]

Classification Azobenzene Empirical Ci4H8N2Na20ioS2 Properties Dk. purple-brn. powd. m.w. 474.32 Toxicology LD (oral, rat) >10 g/kg LD50 (oral, mouse) 2900 mg/kg, (IP, rat) 1300 mg/kg harmful if swallowed prevent inh. and direct contact with eyes and skin TSCA listed Precaution Incompat. with strong oxidants Hazardous Decomp. Prods. NOx, CO, CO2, SOx, N, irritating and toxic fumes and gases Storage Store in cool, dry place keep container closed when not in use... [Pg.62]

Classification Azobenzene Empirical C26HisN3Na30ioS3 Properties Reddish-bik. powd. sol. in water, acetone, Cellosolve si. sol. in alcohol m.w. 695.60 m.p. 0 C... [Pg.63]

Classification Azobenzene nitroso color Empirical C3oHisFeN30i5S3 3Na Properties M.w. 878.47 Toxicology LD50 (IV, mouse) 460 mg/kg mutagen TSCA listed... [Pg.65]

CAS 5850-86-2 EINECS/ELINCS 227-458-6 Synonyms Cl 15575 4-(2-Hydroxynaphthalen-1-ylazo)-3-methylbenzenesulfonic acid, sodium salt 4-[(2-Hydroxy-1-naphthyl) azo]-3-methylbenzenesulfonic acid, monosodium salt Classification Azobenzene Empirical Ci7HisN2Na04S Properties M.w. 364.35 Toxicology TSCA listed Uses Dye for wool, silk, polyamide, jute, and paper... [Pg.68]

CAS 8003-88-1 El NECS/ELINCS 232-328-7 Synonyms Cl 26550 Classification Azobenzene Empiricai C36H28N6Na20nS3 Properties M.w. 919.81 Toxicology TSCA listed... [Pg.70]

CAS 10127-27-2 El NECS/ELINCS 233-357-8 Synonyms Chromate(l-), [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1 H-pyrazol-4-yl) azo]-2-hydroxy-5-nitrobenzenesulfonato (3-)] hydroxy-, sodium Cl 18745 Solvent orange 5 Classification Chromium complex azobenzene... [Pg.70]

Amido naphthol red G Azophloxin Azophloxine Cl 18050 Ext. D C Red No. 11 Food red 10 2,7-Naphthalenenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-(phenylazo)-, disodium salt Phloxine G Red 2G Classification Azobenzene Empiricai Ci8Hi5N3Na208S2 Properties M.w. 511.46 Toxicoiogy Mutagenic data TSCA listed Hazardous Decomp. Prods. Heated to decomp., emits toxic vapors of NOx and SOx Uses Dye for polyamide colorant in foods ... [Pg.70]

CAS 5858-39-9 EINECS/ELINCS 227-490-0 Synonyms Acid red 4, monosodium salt Cl 14710 4-Hydroxy-3-(2-methoxyphenylazo) naphthalene-1-sulfonic acid, sodium salt 1-Naphthalenesulfonic acid, 4-hydroxy-3-((2-methoxyphenyl) azo)-, monosodium salt Classification Azobenzene Empirical Ci7Hi4N2Na05S Properties M.w. 381.35 Toxicology TSCA listed Uses Dye for wool, paper Manuf./Distnb. Aldrich http //www.sigma-aidrich.com, Sigma... [Pg.71]

Synonyms Cl 16255 Coccine Coccin red Cochineal Red A Food red 7 7-Hydroxy-8-[(4-sulfo-1 -naphthalenyl) azo]-1,3-naphthalenedisulfonic acid, trisodium salt 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl) azo]-, trisodium salt 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthyl) azo)-, trisodium salt New coccine Ponceau 4R 1 -(4-Sulfo-1 -naphthylazo)-2-naphthol-6,8-disulfonic acid, trisodium salt SX purple Trisodium 1-(1-naphthylazo)-2-hydroxynaphthalene-4, 6,8-trisulfonate Classification Monoazo color azobenzene Empirical C2oHi4N2Na30ioS3 Properties M.w. 607.51... [Pg.71]

Classification Xanthene color azobenzene Empirical C27H2sN2Na07S2 Properties M.w. 580.69 Toxicology LD50 (oral, mouse) 10,300 mg/kg mutagen TSCA listed Storage Photosensitive... [Pg.73]

CAS 5413-75-2 EINECS/ELINCS 226-502-1 Synonyms Acid red 73, disodium salt Cl 27290 7-Hydroxy-8-[[4-(phenylazo) phenyl] azo]-1,3-naphthalenedisulfonic acid, disodium salt 7-Hydroxy-8-(4-phenylazophenylazo) naphthalene-1,3-disulfonic acid, sodium salt 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(phenylazo) phenyl) azo)-, disodium salt Classification Azobenzene diazo color Empirical C22HieN4Na207S2 Properties M.w. 558.48 Uses Dye for wool, silk, polyamide, resins, stains, and soaps colorant in hair dyes Manuf/Distrib. ABCR http //www.abcr.de] Aldrich http //www.sigma-aldrich.com] Anar Infl. http //www.anarchem.com] Dudley http //www.dudiey-chem.com] Fluka http //www.sigma-aldrich.com Acid red 87... [Pg.73]

CAS 1658-56-6 EINECS/ELINCS 216-760-3 Synonyms Cl 15620 Ext. D C Red. no. 8 Fast red A 4-(2-Hydroxynaphthalen-1-ylazo) naphthalene-1-sulfonic acid, sodium salt 4-((2-Hydroxy-1 -naphthalenyl) azo)-1 -naphthalene sulfonic acid sodium salt 1-Naphthalenesulfonic acid, 4-((2-hydroxy-1-naphthalenyl) azo)-, monosodium salt Red no. 506 Rocceline Roccelline Solid red A Classification Azobenzene Empiricai C2oHi4N2Na04S Properties M.w. 401.41 m.p. 280 C Toxicoiogy Mutagen TSCA listed Storage Store in cool, dry place keep container closed when not in use... [Pg.74]

Classification Azobenzene Empirical C32H2oN4Na208S2 Properties Red powd. sol. (mg/ml) 1-10 mg water (20 C), < 1 mg in DMSO, 95% ethanol, acetone (20 C) m.w. 698.64 m.p. > 300 C Toxicology Mutagenic data TSCA listed Precaution Probably combustible incompat. with oxidizing and reducing agents copper dulls color iron makes it much duller Hazardous Decomp. Prods. Heated to decomp., emits toxic vapors of NOx and SOx Storage Store ambient temps. [Pg.75]

Classification Azobenzene Empirical C22HisN4Na04S Properties M.w. 454.44 Toxicology TSCA listed Uses Dye for wool, silk, polyamide, jute Manuf./Distrib. Aldrich http //www.sigma-aldrich.com, Anar Int l. http //www.anarchem.com, Sigma Acid red 179 Synonyms Cl 19351 Classification Chromium complex Uses Dye for wool, silk, polyamide Acid red 183... [Pg.76]

CAS 6408-31-7 EINECS/ELINCS 229-054-5 Synonyms Benzenesulfonic acid, 5-chloro-3-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl] azo]-2-hydroxy-, chromium complex Chromate (2-), (5-chloro-3-((4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl) azo)-2-hydroxybenzenesulfonato (4-)) hydroxy-, disodium Cl 18800 Classification Chromium complex azobenzene Empirical CieHioCICrN409S2 2Na Properties Dk. rustpowd. m.w. 599.81 Toxicology ACGIH TWA 0.5 mg(Cr)/m prevent inh. and direct contact with skin and eyes TSCA listed... [Pg.76]

Classification Azobenzene Empirical Ci6HioCl2N4Na207S2 Properties Solid m.w. 551.30 Toxicology May cause... [Pg.80]

Classification Azobenzene Empirical C23H2iNsNa06S2 Properties M.w. 550.54 Toxicology TSCA listed... [Pg.80]

Classification Azobenzene Empirical C23Hi8CIN4Na07S2 Properties YIsh.-brn. powd. sol. in water, alcohol, alkalis, cone, sulfuric acid si. sol. in ethanol, acetone insol. in other org. soivs. precipitated by dil. acids m.w. 584.98 Toxicology TSCA listed Uses Dye for wool, silk in the isolation of polymyxin... [Pg.81]

Synonyms Benzo a phenoxazin-7-ium, 9-(dimethyiamino)-, chioride Benzo a phenoxazin-9-yiidene-dimethyi-ammonium, chioride Ci 51175 9-(Dimethyiamino) benzo a phenoxazin-7-ium chioride Meidoia s biue Classification Azobenzene zinc chloride double salt... [Pg.392]

Classification Azobenzene triphenylmethane color Empirical C33H40CIN3 Properties M.w. 514.15 Toxicology TSCA listed Uses Dye for paper pigment in printing inks solvent dye for ballpen inks, printer ribbons colorant in hair dyes... [Pg.392]

Methylthionine chloride Methylthioninium chloride 3H-Phenothiazine, 7-(dimethylamino)-3-(methylimino)-, 3-methochloride Phenothiazin-5-ium, 3,7-bis (dimethylamino)-, chloride Solvent blue 8 Swiss blue Tetramethylene blue N,N,N, N -Tetramethylphenothiazine-3,7-diamine, hydrochloride Tetramethylthionine chloride Classification Azobenzene Empirical CieHisCINsS... [Pg.392]

CAS 10114-58-6 EINECS/ELINCS 233-314-3 Synonyms Bismarck brown Bismarck brown Y Cl 21000 Excelsior brown Leather brown Manchester brown 4,4 -[1,3-Phenylenebis (azo)] bis]1,3-benzenediamine] dihydrochloride 4,4 -[m-Phenylenebis (azo)] bis [m-phenylenediamine] dihydrochloride Phenylene brown Classification Azobenzene Empiricai C18H20CI2N8... [Pg.393]

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