二钠

Phosphate-free detergent builder ; sodium disilicate ; composite detergent buil

无磷洗涤助剂；二硅酸钠；复合洗涤助剂

By experiment we found that the reaction of aldehydes and nitromethane can proceed smoothly in the presence of a catalytic amount of Disodium Binaphtholate (3 mol %),and obtain a corresponding rate of product up to 100%.

通过筛选，我们发现在催化剂量的联二萘酚双钠盐(3 mol%)存在下，henry反应能够快速的进行，产率高达100%。

Objective: Spectrophotometric method determination of ozone in ambient air by using indigo disulfonic acid sodium is a well method.

目的：研究了靛蓝二磺酸钠分光光度法测定环境空气中臭氧。

The thesis chose 4, 4\'-diazostilbene-2, 2\'-disulfonic acid disodium saltas cross-linking agent to crosslink poly in commercialNafion117 membranes under the irradiation of ultraviolet.

本论文选择4，4'-双叠氮菧-2，2'二磺酸钠为交联试剂，以紫外光引发，使聚乙烯吡咯烷酮在Nafion膜中发生交联，从而制备了semi-IPN型Nafion／PVP复合膜。

Spectrophotometric determination of ozone in indoor air by using indigo disulphonate was investigated.

建立了快速简便、灵敏的测定室内空气中臭氧的方法--靛蓝二磺酸钠分光光度法。

The uncertainty of ozone concentration in air measured by indigo disulphonate spectrophotometry was assessed.

对靛蓝二磺酸钠分光光度法测定某工作场所空气中臭氧浓度的不确定度进行了评定。

Firstly, partial sulfonated polystyrene were prepared by solution polymerization with the raw materials of styrene, sodium styrene sulfonate and divinyl benzene; Secondly, the SPS/OMMT nanocomposites were prepared by intercalation polymerization with the monmers and organically modified montmorillonite.

首先，利用NMP为溶剂，BPO引发苯乙烯、苯乙烯磺酸钠、二乙烯基苯溶液共聚；同时，采用高分子的单体与有机蒙脱土插层聚合制备了磺化聚苯乙烯阳离子树脂／蒙脱土复合材料。

The synthesis methods of ethyl lactate catalyzed by P-toluene sulfonic acid, cationic exchange resin, ferric chloride hexahydrate, stannous chloride, Aluminium chloride, modified zirconium oxid, ferric-potassium vitriol, ammonium ferric sulfate dodecahydrate, rave earth sulfate, sodium bisulfate monohydrate, complex solid superacid, heteropoly acid, molecular sieve, ionic liquid and lipase etal.

评述了对甲苯磺酸，阳离子交换树脂，六水三氧化铁，氯化亚锡，三氯化铭，改性氧化锆，铁钾矾，十二水合硫酸铁铵，稀土硫酸盐，一水硫酸氢钠，复合固体超强酸，杂多酸，分子筛，离子液体和脂肪酶等催化剂催化合成乳酸乙酯的合成方法。

Sodium Phosphate, Tribasic, Dodecahydrate

磷酸钠，三盐基的，十二水化物，试

First, Fe3O4 magnetic fluid was prepared by coprecipitation method using FeSO4 and FeCl3 as main materials, sodium dodecane sulfate as surfactant.

以FeSO4和FeCl3为主要原料，用十二烷基磺酸钠作为表面活性剂，制备了稳定的水分散性Fe3O4磁流体。

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。