丁二酸

The company is the biggest professional manufacturer about succinic acid series in China,the main product are succinic acid,succinic anhydride,ethyl succinyl chloride,the products are fine and advanced technicsis used manufacturing.

简介： 公司是国内最大的丁二酸系列产品的专业生产企业，重点产品：丁二酸、丁二酸酐、丁二酸单乙酯酰氯，产品质量上乘，多种工艺提供不同厂家的需要。

Potassium ferricyanide and dithiothreitol were used to control redox potential from －100 mV to －450 mV in 3 L fermenter.

在3 L发酵罐上利用铁氰化钾和二硫苏糖醇调节发酵体系氧化还原电位值在－100～－450 mV，结果表明－350 mV为菌体生长和产丁二酸的最佳电位，丁二酸生产速率由0.75 g/提高到1.18 g/，产物丁二酸与副产物乙酸的质量浓度比由2.5提高到3.9。

Analysis of the treated aqueous solution was conducted with GC-MS,and the main intermediates during phenol degradation were isobutyric acid,malonic acid,benzoquinone,butenoic acid,oxalic acid,maleic acid,succinic acid,hydroquinone,catechol and resorcin.

利用GC-MS分析了苯酚降解主要中间产物为异丁酸、丙二酸、对苯醌、丁烯酸、乙二酸、顺丁烯二酸、丁二酸、邻苯二酚、对苯二酚及间苯二酚等，并据此推测了苯酚电催化氧化的可能反应途径。

High relative molecular mass poly was synthesized by direct polycondensation of succinic acid and 1,4-butanediol in decalin solution at 140～200 ℃ for 12～14 h.

以丁二酸和丁二醇为原料，十氢萘为溶剂，在140~200℃反应12~14 h，进行直接聚合，合成了高相对分子质量聚丁二酸丁二醇酯。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

公司专业经营销售溴化物系列产品：溴化钠、溴酸钠、溴化钾、溴酸钾、四溴双酚A、十溴二苯醚、十溴联苯醚、十溴二苯乙烷、六溴环十二烷、二溴新戊二醇、三溴新戊醇、三溴苯酚、八溴醚、溴化聚苯乙烯、溴化铵、溴化钙、二溴丁二酸、二溴丁烯二醇、溴化表面活性剂系列：十二烷基三甲基溴化铵、十四烷基三甲基溴化铵、十六烷基三甲基溴化铵、十八烷基三甲基溴化铵、十二烷基三甲基氯化铵、十四烷基三甲基氯化铵、十六烷基三甲基氯化铵、十八烷基三甲基氯化铵、四丁基溴化铵批发销售：二羟甲基丙酸、DL-苹果酸、间苯二甲酸 PIA、羟基乙酸、己二酸。

In result, formic, acetic, methanesulfonic, oxalic, malonic, succinic and glutaric acids were detected notably. Formic, acetic and oxalic acids were the most abundant organic acids, and the sum of their concentrations averagely accounted for 89% of the total detected organic acids and 13% of the total anions, respectively.

结果表明，甲酸、乙酸、甲磺酸、乙二酸、丙二酸、丁二酸、戊二酸均有不同程度检出，一元有机酸中甲酸和乙酸在每场降水中均有检出；二元有机酸中，乙二酸和丁二酸检出率很高，其他有机酸检出率较低。

M treatment materials, and also tartaric acid and no maleic acid detected in G. v treatment materials. Inoculation also increased the content of organic acid secretion (increased by 19.80～56.87 mg/kg) of trifoliate root, and the application of AlPO4 greatly increased organic acid content (increased by 20.06～21.84 mg/kg); uninoculated plant root secreted a bit of organic acid; Mycorrhizal poncirus trifoliata seedlings excreted malic acid (42.87%), citric acid (39.22%) and oxalic acid (12.06%).

接种AM真菌的根系分泌的有机酸种类与对照有所不同，未接种处理枳分泌的有机酸有草酸、苹果酸、乳酸、乙酸、顺丁烯二酸和柠檬酸等6种，而接种G.m的则检测到草酸、酒石酸、苹果酸、乳酸、乙酸、柠檬酸、丁二酸等7种，G.v处理的检测到酒石酸，接种处理均未检测到顺丁烯二酸；接种丛枝菌根真菌增加了枳根系分泌有机酸的量比未接种处理增加19.80～56.87 mg/kg，且施用AlPO4后有机酸含量显著增加(增加20.06～21.84 mg/kg；未接种植株根系仅分泌少量有机酸；接种植株根系分泌的有机酸以苹果酸(42.87%)、柠檬酸(39.22%)和草酸(12.06%)为主。

The OH-terminated linear aliphatic polyester polybutylene sebacate was synthesized by sebacic acid and butancdiol using solution polycondensation combined with melt polycondensation. The composition and construct characteristic of the product were analyzed by GPC, FT-IR and 1HNM.

以丁二酸和丁二醇为原料，采用溶液与熔融结合法合成了端羟基聚丁二酸丁二醇酯，用甲苯-2，4-二异氰酸酯对PBS封端，合成了线性遥爪型纸张增强剂TDI-PBS。

High molecular weight poly was obtained from succinic acid and 1,4-butanediol through a polycondensation process.

以丁二酸、丁二醇为原料，通过直接缩聚反应合成了高分子量聚丁二酸丁二醇酯。

Dibutyl succinate was synthesized catalyzed by a strong acid cation exchange resin from succinic acid and n-butyl alcohol.

用强酸性阳离子交换树脂催化丁二酸和正丁醇的酯化反应，合成了丁二酸二丁酯。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。