Shipped in solution with sulfuric acid (solutions are usually 40% nitrosylsulfuric acid and 54% sulfuric acid (Hawley)). Solution is a straw-colored oily liquid with a sharp odor. When pure, a crystalline solid decomposing at 73°C. Very irritating to skin and eyes. Used to make dyes and other chemicals.
计算性质
辛醇/水分配系数(LogP):
-0.9
重原子数:
7
可旋转键数:
1
环数:
0.0
sp3杂化的碳原子比例:
0.0
拓扑面积:
101
氢给体数:
1
氢受体数:
6
ADMET
毒理性
副作用
Dermatotoxin - 皮肤烧伤。
Dermatotoxin - Skin burns.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
A combined experimental and DFT investigation of mono azo thiobarbituric acid based chalcone disperse dyes
作者:Alaa Z. Omar、Mona N. Mahmoud、Samir K. El-Sadany、Ezzat A. Hamed、Mohamed A. El-atawy
DOI:10.1016/j.dyepig.2020.108887
日期:2021.2
of the azo and hydrazo tautomeric forms and their electronic absorption of the dyes were optimized at B3LYP/6-311G level of theory. All the azo compounds were evaluated for their dyeing performance on polyester fibers, and PET. All the synthesized dyes gave moderate to excellent fastnessproperties on PET fiber. The effects of the nature of the substituents on the color and dyeing properties of these
4-氨基苯乙酮与不同取代的苯甲醛反应合成了许多单偶氮染料,得到了一系列新的查尔酮衍生物。然后使这些查耳酮的重氮盐与硫代巴比妥酸反应以产生合适的偶氮染料。通过IR,NMR光谱数据确定新合成的染料的结构。红外研究证实,固相中存在偶氮二氧噻吩互变异构体,而11 H NMR研究表明,主要存在偶氮酚-氧代硫醇或肼基-二氧代硫醇互变异构体。在B3LYP / 6-311G的理论水平上优化了偶氮和肼互变异构形式的几何形状及其对染料的电子吸收。评价所有偶氮化合物在聚酯纤维和PET上的染色性能。所有合成的染料在PET纤维上均具有中等至优异的牢度性能。已经评估了取代基的性质对这些染料的颜色和染色性能的影响。讨论了涤纶纤维的染色机理。
The invention relates to new quinolone- and naphthyridonecarboxylic acid derivatives which are substituted in the 7-position by a partly hydrogenated isoindolinyl ring, processes for their preparation and antibacterial agents and feed additives containing these compounds.
is readily prepared and stabilized in high concentrations in dry organic solvents at normal working temperatures. These conditions allow for facile acid and water free nitrosation and nitration reactions for which three examples are given here: the preparation of benzenediazonium nitrite, [PhN2][NO2]; nitrosyl chloride, NOCl, and nitrosylsulfuric acid, (ONOSO3H).
Disclosed is a compound of the formula
and dimers thereof, wherein R, R2, X and Z are as described herein. The compounds are useful as colorants, particularly in applications such as phase change inks.
Monoazo dyes which are free from water-solubilizing groups and which
申请人:Zeneca Limited
公开号:US05739299A1
公开(公告)日:1998-04-14
A process for coloring a synthetic textile material or fibre blend thereof which comprises applying to the synthetic textile material a compound or mixture thereof, which is free from water solubilizing groups, of Formula (1): A--N.dbd.N--D Formula (1) wherein A and D each independently is an optionally substituted heterocyclic or carbocyclic group and at least one of A or D carries directly at least one --SO.sub.2 F group or carries a substituent to which at least one --SO.sub.2 F group is attached except for 4-(4-fluorosulphonylphenylazo)-N,N-dimethylaniline, provided that one of A or D is not 3,5-difluorosulphonylthien-2-yl, optionally substituted 1-phenyl-pyrazol-4-yl-5-one or ##STR1## or that one of A or D does not carry an --NCH.sub.2 CH(OH)CH.sub.2 Cl, --NCOCH.sub.2 Cl or --NCH.sub.2 CH.sub.2 SO.sub.2 F substituent. The presence of one or more --SO.sub.2 F groups in a dye molecule generally improves the properties of that dye and confers surprisingly good wet fastness and light fastness properties.