查询词典 hydrogen chloride

Sodium hydrosulfite,hydrogen peroxide,sodium percarbonate,sodium sulfite,rongalite C,zinc oxide,sodium thiosulfate,carbon dioxide,dry ice,methanol,formalin,urea,sodium carbonate,ammonium chloride.

提供产品：连二亚硫酸钠，过氧化氢，过氧碳酸钠，亚硫酸钠，雕百块，氧化锌，硫代硫酸钠，二氧化碳，干冰，甲醇，甲醛，尿素，纯碱，氯化铵。

Kosmotropes are stabilizing solutes which increase the order of water (such as polyhydric alcohols [ 307 ], trehalose, trimethylamine N -oxide, glycine betaine, ectoine, proline and various other zwitterions) whereas chaotropes create weaker hydrogen bonding, decreasing the order of water, increasing its surface tension and destabilizing macromolecular structures (such as guanidinium chloride and urea at high concentrations).

这是稳定增长kosmotropes溶质水秩序(如多元醇〔307〕、海藻糖、甲胺氮氧化物、甜菜碱、ectoine，脯氨酸和其他各种盐)而创造chaotropes氢键较弱，为了减少用水，增加其表面张力和大分子结构不稳定。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用&一勺烩&方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

The depilating composition for less thiolase process and the piling depilation method therewith features that leather blank in 100 portions, proteinase in 0.1-0.6 portion, sodium sulphide in 0.1-0.8 portion, sodium chloride in 0.1-3 portions, surfactant 0.1-1 portion and hydrogen peroxide in 0-5 portions are dissolved or dispersed in water of 7-15 portions while adding rice bran in 1-4 portions and kaolin in 0.5-3 portions to form paste mixture; and the leather blank is then brushed manually to make the mixture adhered onto the inside of the leather blank, piled with inside to inside in hot room at 15-35 deg.c for 20-30 hr, and depilated manually after the hair becomes loose.

一种少硫酶脱毛组合物及其堆置脱毛方法，其特点是将皮坯100份、蛋白酶0.1-0.6份、硫化碱0.1-0.8份、氯化钠0.1-3份、表面活性剂0.1-1.0份和过氧化氢0-5份依次溶入或分散于水7-15份中，并加入米糠1-4份和高岭土0.5-3份的混合物调至糊状，用毛刷手工涂于浸水去肉后的皮坯的肉面上，要求涂糊均匀，然后肉面对肉面堆置，放入温度为15-35℃的温房内，时间约为20-30小时，待毛松动，进行手工推毛。

Polyarylene sulfide is disclosed, of which extract with methylene chloride is in an amount of not more than 0.7 % by weight, a melt viscosity V6 is 20 to 15,000 poises and a content of -SX groups is at least 15 micro moles/g, wherein X represents an alkali metal or a hydrogen atom.

被公开的是聚芳硫醚，其具有二氯甲苯提出物的最为不大于0.7％重量，熔体粘度V6为20～15000泊和－SX基的含量至少为15微摩尔／克，其中X代表碱金属或氢原子。

Besides, n-butyl and sec-butyl tosylate that are difficult for oxidative addition can react with phenylmagnesium bromide to form corresponding cross-coupling products. Primary alkyl halide which contains β-hydrogen and is relatively hard to undergo the reaction , n-butyl chloride for instance, can react with aryl Grignard reagents in the presence of NiB alloy as well.

此外，难以进行氧化加成的对甲苯磺酸正丁酯和对甲苯磺酸仲丁酯可以与苯基溴化镁作用生成相应的交叉偶联产物；反应相对困难的含β-H的伯卤烷，如：正氯丁烷也可以在NiB催化下与芳基格氏试剂发生偶联。

The only reference in the published literature to such a reaction was a note by Clark who reported-without experimental details-that benzaldehyde is converted to benzoyl chloride Indeed, in some cases,t-butyl hypochlorite has been known to effect substitution of hydrogen by chlorine.

在出版文学中仅有的参考这样一反作用was a指出经过克拉克，那苯醛存在在有些情形下的确使转而信仰苯酰氯化物在外面所报告的-实验details-的，t-丁基次氯酸盐已经被知道实现氢的代用在附近氯。

A new organic compound:N,N'-bis(1,10-phenanthroline-2-formacyl)-4,4'-diamino-diphenylmethane was synthesized via oxidation,esterification,substitution,hydrolysis, amidation of 1,10-phenanthroline as the starting material with chemical reagents (hydrogen peroxide,benzoyl chloride,potassium cyanide,sodium hydroxide solution,4,4'-diamino-diphenylmethane).

以邻菲啰啉为起始原料，与双氧水反应合成邻菲啰啉-N-氧化物，接着与苯甲酰氯、氰化钾、NaOH水溶液一一反应合成中间体邻菲啰啉-2-甲酸，再与4，4′-二氨基苯基甲烷进行酰胺化反应合成目标产物。

The instrument can be used for the determination of total sulfur, total chrorine, trace water, bromine number and bromine index, mercaptan and hydrogen sulfide, chloride ion, salt content and chemical oxygen demand.

仪器可广泛用于各种样品中总硫、总氯、微量水分、溴价和溴指数、硫醇和硫化氢、氯离子和盐含量以及化学需氧量等的测定。

Deep water paper, thermal fax paper, Sham Tseng polyester cardboard, Sham Tseng pressure records paper, electroenciphalogram paper, low voltage electric susceptibility, oscilloscopic using paper, elctroacoustic paper, force are paper, meteorological record sheets and regulator inked ribbons for paper, thermal paper, ECG velcanized, bolgarii fax paper, spark a transcript of the shadow fax paper, pH test strip velcanized, hydrogen sulfide, carbon paper analysis paper, multi-powder-electrogenerated paper, sound paper, instrument records velcanized, potassium chloride punch holes in the paper, paper, electrostatic aunt of paper.

深井抗水记录纸、热感传真纸、深井涤纶卡纸、深井压力记录纸、脑电图纸、低电压电敏纸、示波用记录纸、电声纸、力感记录纸、气象记录纸、校表仪墨带纸、热敏记录纸、心电图原纸、火花传真纸、火花誊影传真纸、pH试纸原纸、硫化氢分析纸、碳素纸、湿式电化学记录纸、声芯纸、仪表记录原纸、氯化钾记录纸、打孔记录纸、静电姨妈纸。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。