4-硝基甲苯-2-磺酸自缩聚染料根据缩聚程度可以分为从黄色至红色的多种染料。其中应用最广泛的是直接黄11,这是一种强效黄色染料,特别适用于纤维和皮革等材料的染色。
化学性质板状结晶体(通过水重结晶获得),能够溶解于乙醇、乙醚、氯仿中。
用途该物质用作二苯乙烯系直接染料的中间体,并且是荧光增白剂和染料中间体的重要组成部分。
生产方法由对硝基甲苯经过磺化反应制得。具体步骤为:将熔融的对硝基甲苯加入搪玻璃反应锅内,缓慢滴入20%发烟硫酸980kg,控制温度不超过90℃。加完后升温至105-110℃并保温1小时。反应完成后冷却至70℃,用冷水稀释并在低于100℃的条件下搅拌30分钟。冷却至25℃后调整酸度并进行过滤,滤饼即为2-甲基-5-硝基苯磺酸。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
5,5’-二硝基二苯乙烯-2,2’-二磺酸 | 4,4'-dinitrostilbene 2,2'-disulfonic acid | 128-42-7 | C14H10N2O10S2 | 430.373 |
2-甲基-5-硝基苯磺酰氯 | 2-methyl-5-nitrobenzene-1-sulfonyl chloride | 121-02-8 | C7H6ClNO4S | 235.648 |
2-甲基苯磺酸 | o-toluenesulfonic acid | 88-20-0 | C7H8O3S | 172.205 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-Bromomethyl-5-nitro-benzenesulfonic Acid | —— | C7H6BrNO5S | 296.098 |
—— | 4-nitrobenzaldehyde-2-sulphonic acid | 43099-64-5 | C7H5NO6S | 231.186 |
5,5’-二硝基二苯乙烯-2,2’-二磺酸 | 4,4'-dinitrostilbene 2,2'-disulfonic acid | 128-42-7 | C14H10N2O10S2 | 430.373 |
—— | 4,4'-dinitrobibenzyl-2,2'-disulfonic acid | 6404-60-0 | C14H12N2O10S2 | 432.389 |
2,4-二硝基甲苯-6-磺酸 | 2,4-dinitrotoluene-6-sulfonic acid | 133-62-0 | C7H6N2O7S | 262.2 |
4-硝基-2-磺基苯甲酸 | 4-nitro-2-sulfobenzoic acid | 22952-26-7 | C7H5NO7S | 247.185 |
4-氨基甲苯-2-磺酸 | 4-amino-toluene-2-sulfonic acid | 118-88-7 | C7H9NO3S | 187.219 |
—— | 5-amino-2-formyl-benzenesulfonic acid | 69851-86-1 | C7H7NO4S | 201.203 |
4,4'-二氨基二苯乙烯-2,2'-二磺酸 | 4,4'-diaminostilbene-2,2'-disulfonic acid | 81-11-8 | C14H14N2O6S2 | 370.407 |
—— | trans-4,4'-diaminostilbene-2,2'-disulfonic acid | 28096-93-7 | C14H14N2O6S2 | 370.407 |
4,4-二氨基联苄-2,2-二磺酸 | 4,4'-diaminodiphenyl-2,2'-disulfonic acid | 5136-34-5 | C14H16N2O6S2 | 372.423 |
4-氨基-2-磺基苯甲酸 | 4-amino-2-sulfobenzoic acid | 527-76-4 | C7H7NO5S | 217.202 |
The ensuing paper summarizes an investigation on the effect of target microstructural morphology on resultant sputter deposited media magnetic performance. Significant differences in media magnetic coercivity were obtained from Co–Cr–Pt–Ta targets possessing the same chemistry, sputtered under identical conditions, but possessing different microstructural phase and crystallographic texture characteristics. This result was most likely caused by the difference in sputter yields for the Ta-containing phases in the two distinct target microstructures. Results support enhanced chromium segregation yielding a decrease in the intergranuler exchange energy field for the deposited thin films.