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1. Thus were born the azo dyestuffs, perhaps the greatest single discovery in the history of the dyestuffs industry.

2. Aqueous insoluble azo dyes and pigments are determined volumetrically.

3. A dark red to purple azo dye.

4. The wastewater containing azo dye was treated by internal electrolysis.

5. IR, UV and fluorescence spectrum of the two azo pyrogallol reagents were studied.

6. Azo dyestuff formed by (1) has great color tone, macromolecule extinction coefficient and good storage stability, so it can be made into imaging dye stuff and colorant.

7. The triphenylamine azo compounds were successfully characterized by matrix-assisted laser desorption-ionization time of flight mass spectrometry(MALDI-TOF MS).

8. The cationic dye may be chosen from azo dyes, azomethine dyes, methine dyes and xanthene dyes.

9. OH radicals mainly attack the azo group and the aryl ring bearing methylamino group, forming corresponding OH-adducts.

10. Heterocyclic azo dyes are one group of the most important chromogenic reagents in spectrophotometric analysis.

11. Nylon fastening tapes with AZO free are available for 108 colours.

12. Must pass azo, cadmium, PCP, chlororganic carrier , disperse dies , nickel free for metal details.

13. The polarographic behaviour of an azo compound produced by the reaction of Methy amine phosphorus (MAP) with 8 hydroxyquinoline(Oxin), in the ammonia medium has been studied.

14. Reducing degradation rates of azo dyes and chloroorganics by the electrogalvanizing zinc plate were greatly increased under the irradiation of an iodinetungsten lamp.

15. All non azo dye ingredients, in line with environmental standards.

16. The trans - cis photoisomerization of azobenzene is the basis of photo - responsive properties of many azo - functional materials.

17. Recent advances in azo - dye - degrading bacteria and azo reductase were reviewed.

18. Enhanced action of azo dyes decolourization by quinone - reducing community using redox mediators was inspected.

19. Because of the photoisomerization of azo dyes, this system shows many unique characteristics, which could not be explained by existing theories.

20. It is well known that azo molecules can undergo trans-cis-trans isomerization cycles under the irradiation at the wavelength lying in the absorption region.

21. The photo - catalytic degradation of an azo - dye acid red G.

22. The synthesis of Poly(N-vinyl carbazole) with azo chromophore side groups was studied.

23. The synthesis methods of azo copper complex reactive dyes were studied,[http://sentencedict.com/azo.html] especiallycontaining the ethyl sulfate groups.

24. A series of azo hydroxyporphyrin - oxadiazole compounds were synthesized and characterized by 1 HNMR, FAB - MS, IR and UV - Vis spectra.

25. The polymerization of styrene in O/W, W/O, and BC microemulsions was investigated by using the water - soluble potassium persulfate and oil-soluble azo - bis - isobutyronitrile(AIBN) as initiators.

26. Organic dyes related in this review included the following categories, the triphenylmethane , the azo dyes, the phthalocyanines, the hydroxyanthraguinones and etc(58 ref. cite).

27. It was found that the oxidation rate of the azo dye molecules is related to its adsorption amount on the surface of composite electrode.

28. So it was necessary to avoid the interference of thermal energy when test azo compound's photochromism.

29. We analyzed theoretically and computed numerically the transmission spectrum of azo - benzene doped POF LPG.

30. The organic dye of the invention has fast response to laser and excellent photo-thermal stability, can effectively replace cancerogenic azo dye, and has extensive application prospect.