CAS: 121-03-9; P-Nitrotoluene-O-Sulfonic Acid

相似化合物

79326-96-8 1071618-34-2 118-88-7

上下游产品

4-methylisopropylbenzene 1-methyl-4-nitrobenzene toluene sulfuric acid 1-methyl-4-isopropyl-1,3-cyclohexadiene 2-chloro-4-nitrotoluene 2-bromo-4-nitrotoluene 4-amino-toluene-2-sulfonic acid

4-硝基甲苯置于硫酸体系中,化学反应 1.0H,以96%的收率获得4-硝基甲苯-2-磺酸
参考文献:Modified Methods For The Synthesis Of Triazinyl Fluorescent Brightener Intermediates
标题:Modified Methods For The Synthesis Of Triazinyl Fluorescent Brightener Intermediates
摘要:描述了高产率生产三嗪基荧光增白剂中间体的方法.该方法包括简化制备4-硝基-2-甲苯磺酸的工作步骤,以及在制备4,4'-二硝基芪-2,2'-二磺酸时使用二甘醇代替水.
Doi:10.3390/80300318

专利信息

专利号:WO-2012120543-A1
优先权日:2011-03-09
标 题 :A single step process for synthesis of yellow dye -11 of consistent colour tone
发明人：KULKARNI AMOL ARVIND; JOSHI RAMESH ANNA; JOSHI ROHINI RAMESH
权利人:COUNCIL SCIENT IND RES; KULKARNI AMOL ARVIND; JOSHI RAMESH ANNA; JOSHI ROHINI RAMESH
摘要:Yellow due 11 is a useful dye with several application in the industry. The available literature in the synthesis of this dye results in non uniform colour tone. This issue in prior art is addressed by disclosing a batch as well continuous single condensation step process for synthesizing the yellow dye 11 with on-line uv monitoring system to ensure colour tone uniformity.

专利号:US-4390342-A
优先权日:1980-04-01
标 题:Process for the preparation of solid composition of water-soluble dyes
发明人：BRUTTEL BEAT; PFENNINGER HEINZ
权利人:CIBA GEIGY CORP
摘要:A process for producing solid dye compositions, which process comprises passing an aqueous solution or suspension of at least one water-soluble crude dye, to effect separation of synthesis by-products having a molecular weight of below 500 and partial separation of water, through a semipermeable membrane, subsequently drying the resulting aqueous preparation which has become more highly concentrated, and optionally adding further additives before and/or after passage of the aqueous solution or suspension through the semipermeable membrane, these additives being added beforehand only when they do not become separated by the membrane. There are obtained by this process low-dust to dust-free compositions which are distinguished by high mechanical strength, high bulk density, free-flowing characteristics and good dissolving behavior. Employing these compositions it is possible to prepare low-foam to foam-free aqueous dye liquors having very good solution stability, even in the presence of electrolytes.

专利号:DE-112012001131-T5
优先权日:2011-03-09
标 题 :One step process for the synthesis of 'Yellow-11' dye with uniform hue

专利号:CN-113755867-A
优先权日:2021-09-29
标 题:A kind of electrochemical synthesis method of 2-carboxy-5-nitrobenzenesulfonic acid

专利号:US-11535647-B2
优先权日:2018-09-14
标题 :Peptide purification method using sulfonate compound
发明人：MATSUYAMA KEISUKE; YAMAMOTO KENICHIRO; MURAKAMI SAYOKO
权利人:NAGASE & CO LTD
摘要:A method for purifying a target peptide may include mixing a peptide product obtained through a peptide synthesis with a solvent in the presence of a sulfonic acid compound to obtain a solid; and performing a solid-liquid separation to collect the solid.

专利号:SU-1736336-A3
优先权日:1988-03-08
标 题 :Method of @@@-dinitrostilbene-@@@-disulfoacid salts synthesis