查询词典 potassium hydroxide

The effects of different PTC,reacting time,temperature,the concentration of potassium hydroxide and the bromoethane amout on the reaction were studied.

考察了不同相转移催化剂、反应时间、反应温度、氢氧化钾浓度、溴乙烷用量诸因素对2－甲基吲哚进行N－烷基化反应的影响。

The leaching mechanism of niobium from a refractory niobium-tantalum ore by concentrated potassium hydroxide was studied.

实验研究了难分解铌钽矿在高浓度氢氧化钾溶液中浸出过程的机理。

Corneal biopsy with 178.2mmol.L-1 potassium hydroxide slide is a rapid and simple method with high positive rate in diagnosis of fungal corneal ulcer.

角膜活检加178.2mmol.L-1氢氧化钾湿片法是一种快速、便捷、阳性率高的诊断真菌性角膜溃疡的方法。

Safrole oil is nowadays and will be still the main raw material for heliotropine manufacture.Because catalyzation method with potassium hydroxide has merits of cheap material and simple technique , it becomes the sole method to produce isosafrole in domestic factories.

由于氢氧化钾催化黄樟油素异构化法具有原料方便、工艺简单特点，故它是国内工业生产异黄樟油素的唯一方法，但存在收率低(收率小于90％)、污水量大的缺陷，目前一直未解决。

CH3OH could attack the phosphor atom in 1,3,2-dioxaphopholane of compiound (1) to give O-methyl O-hydroxyethyl-O-phthalimidoethyl thiophosphate in 85% yield; in the presence of potassium hydroxide aryl selenol could attack the carbon atom in 1,3,2-diox-aphopholane of the cyclic phospholipid conjugate of N^1-(2-furanidyl)-N^3--5-fluorouracil to give the corresponding product of ring-opening in high yields.

在室温下，以异丙醇作溶剂，苯硒酚与化合物2不反应。在氢氧化钾存在下，以异丙醇／水作溶剂（体积比20：1，在室温下，硒酚可以有效地进攻中化合物2中1，3，2-二氧磷杂环戊烷中的碳原子生成相应的开环产物。按照这一反应条件，顺利实现了硒酚对N^1-（2-呋喃基）-N^3-羟烷基-5-氟脲嘧啶硫代环甘油磷脂缀合物的亲核开环，生成甘油骨架的端碳原子上带有芳硒基新颖的磷脂核苷缀合物。

Results The reaction was not turbidness which was between modified reagent containing potassium hydroxide 143 mmol/L, tartrate kaliumna natrium 56.7 mmol/L and blood serum containing triglyceride 5.6 mmol/L,glucose polymer 60 g/L and need not sample blank.

结果含氢氧化钾 143mmol/L、酒石酸钾钠 56.7mmol/L的改良试剂与含 TG 5.6mmol/L、葡聚糖60g/L的血清反应均不显混浊，可不设标本空白。

Chapter 4: Synthesis of 1,5-diary 1-1,4-pentadien-3-ones from acetone or benzalacetone with aromatic aldehydes results in 86-97% yield with potassium hydroxide as catalyst under ultrasound irradiation in 5-60min.

为合成氰基环己醇找到一条方便高效的合成方法。第四章：研究了超声辐射下，以氢氧化钾为催化剂，芳香醛与丙酮及亚苄基丙酮之间反应合成1，5-双苄基-1，4-戊二烯-3-酮。

Using the syringe, inject 0.30 mL of freshly prepared cyclopentadiene into the vial containing the potassium hydroxide.

用一个注射器，把0.30Ml新鲜制得的环茂二烯注入一个内有氢氧化钾的样品瓶中。。

Dibenzyl oxalate was synthesized from oxalic acid, potassium hydroxide and benzyl bromide under microwave irradiation using tetrabutylammonium bromide as phase-transfer catalyst and polyethylene glycol-200 as solvent.

在微波辐射条件下，以草酸、氢氧化钾和溴化苄为原料，四丁基溴化铵为相转移催化剂，聚乙二醇200为溶剂合成了草酸二苄酯，并通过熔点和红外光谱对产物的结构进行了表征。

Ingredients: Water,Lauric Acid,Myristic Acid,Stearic Acid,Propylene Glocol,Potassium Hydroxide,Cocamidopropyl Betaine,Starch Hydroxypropyltrimnium Chloride,Sodium Laureth Sulfate,Glycol Distearate,Lavandula Angustifolia Oil,Creatine,Tetrasodium Edta,Perfume,Dmdm Hydantoin.

成分： 去离子水，月桂酸，肉豆蔻酸，硬脂酸，丙二醇，氢氧化钾，椰油酰胺丙基甜菜碱，淀粉羟丙基三甲基氯化铵，月桂醇聚醚硫酸钠，乙二醇双硬脂酸酯，薰衣草精油，肌酸，乙二胺四乙酸四钠，香精，DMDM 乙内酰脲。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。