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The status of organic pigment intermediates used (a)


Structure for the M = Ba, Cn, Sr, MM. C. r. PR48c. J. Pigment Red 48 is important for driving the organic red. Pigment species, mainly used in printing ink and plastics coloring can also be used for paints and printing and dyeing textile coatings. In C. L Pigment Red 48 different salts, E barium salts and Ca salts on the more important, the former C. L Pigment Red 48: t the latter C. L Pigment Red 48:2. In recent years, with the heavy metal content in wastewater strict control, people barium salt color. Sediment caused by environmental pollution and harm to human body growing cause for concern. States barium salt lake pigment color is more emphasis on alternative research, to improve calcium color lakes, loose paint particles, color strength, heat resistance, has done a lot of work, and through changes in the new paint from the surface treatment technology performance, proposed color lakes to replace the barium calcium color lakes (one of the alternative pathway), that C. LPR48: 2 alternative C. I. PR48: 1. In addition,[link widoczny dla zalogowanych], the sign c. I. PR49 and c. I. PR53 in a similar situation). * 16 -. Cheng Wei a braid factory, l ��, f �� l �� J part of the country rain ��region C. J. Pigment Red 48,[link widoczny dla zalogowanych], said the yield is as follows: PANGXIDONG or territory 'squeak Mito H I pour the production of the Lieutenant C. J. PR48 small manufacturers, net name with Permanent Red F5R (calcium salt), Fast Red 2 (manganese salt) and resistance to Dan Red BBC, BBN,[link widoczny dla zalogowanych], BBS, etc. (varies depending on the metal.) Domestic C. I. PR48 r plastic products mainly used for coloring. 2B acid produced the world's most about 5,000 tons, 1,000 tons of which the United States, Japan u0O tons, the United Kingdom 1OOG tons, 400 tons of South Korea, India, 300 tons, France sO0 tons, 200 tons, Switzerland, Taiwan Province, 20 carp, 400 tons in China, Asia, producing approximately half of the total world trampling. 2B acid production is mainly the United States Phthalchem / Cychem and the DUP company. United States 2B acid demand for larger,[link widoczny dla zalogowanych], annual demand is about 1,000 tons Tuo, production and demand are basically balanced, and sometimes still has to import. 2B acid production factory for the British Hich-�� n & Welch company in Korea, Hannah companies. Japanese production: B major manufacturers as Mitsubishi Chemical acid (about 700 Dun) and the tube, and chemical (about 300 tons), followed by New Japan Chemical, Samsung chemistry, Dainichiseika have had production. F {2B of the acid on the demand of about 1,400 tons a year to have a certain amount of imports. 2B acid production in China began in 1971 with the first dye by Liaoning too put into production. The current production at home are: Shanghai Dongfeng Pesticide Factory, Zhejiang Jiaxing Fox Chemical Co., Ltd. (Jiaxing Chemicals four plants), Rudong pesticide plants, such as the East Chemical Plant, Jiangsu, China Wujiang Cheng Chemical Co., Ltd. (Wujiang Cheng Lake Chemical Plant), Southern Chemical Plant in Jiangsu Wujin, Jiangsu Wujin Huangli chemical plants. 2B acid pesticide plant, mainly because of production of intermediate eleven 2B acid chloride p-toluidine is an intermediate chlorotoluron herbicide, pesticide plant between the use of production for the toluidine chloride that are further sulfonated 2B acid. 2B acid addition to our own use, about 200 tons of exports. �� 17.2 B Acid usually nitrotoluene was synthesized by chlorination, reduction, sulfonation in the system. 2B acid yield of lower production, the production process at home and abroad in recent years, improved the yield of the Japanese production of acid 2B 85. Dalian dye to criminal nitrotoluene l 2B acid synthesized chemical reaction to indicate the following: C + K, aeS ~ HZO vegetables qDl, z Lu N17-z workbook 2B domestic product acid consumption as follows: nitrotoluene 1O0Okg, chlorine 66Ohg, sodium sulfide 1500kg, sulfur 360kg, sulfuric acid 800kg, soda ash 60Okg, hydrochloric acid 1100kg, carbon 163hg, caustic soda 1l69kg, ferric chloride 25kg, iodine 0.6kg. 2B acid synthesis in Japan has improved, the process used is chlorination of dinitrotoluene with chlorine (recovery of hydrogen chloride), Er Houjia hydrogen reduction, 20% fuming sulfuric acid and then sulfonated with sodium hydroxide and get a 2-amino-4 chloride toluene sulfonate of a 5 to not only improve the yield, but also reduce waste, especially waste acid. Nitrotoluene to count, yield up to 85. Consumption as follows nitrotoluene 660kg, chlorine 345kg, hydrogen 325M. , 20, fuming sulfuric acid 450kg, sodium hydroxide 180 / g, recovery of hydrochloric acid 180kg, consumption of a 800kwh, steam consumption 15000kg, water 1000M. From the future perspective of the development, 2B acid requirements will further increase the future (to be continued.) tH shovel 0.00 ��7972 ?:} Ji C
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