氢氧化钠

Results showed that the optimum condition in carboxy methylation were: 15 percent sodium hydroxide , 20 % chloroacelic acid, alkalified 35℃, etherification 50℃, etherification time 120 min.

甜菜膳食纤维羧甲基化改性的最佳条件：15％氢氧化钠、20％一氯乙酸、35℃碱化温度、50℃醚化温度、2.0h醚化时间。

Then the experiments on the separation of lithium and magnesium from bitterns contenting lithium were carried out, during the experiment NaOH was chosen as addition to further remove magnesium from the extraction liquid and Na_2CO_3 was chosen as deposition agent to prepare Li_2CO_3 product.

作者选取磷酸三丁酯为萃取剂，200#溶剂汽油为稀释剂，氯化铁(FeCl_3)为共萃取剂，对盐湖含锂卤水进行萃取分离镁锂的试验，然后采用氢氧化钠对萃取液进行深度除镁，再用碳酸钠作为沉淀剂制备碳酸锂产品。

Treatment of the diacetoxy-calix [4] arene with a series of ditosylates in dry MeCN in the presence of NaOH resulted in formation of electron-rich calix [4] areneocrowns, which reacted with 4, 4'-bipyrindinium and p-bis -benzene at room temperature in dry MeCN to afford self-assembling [2] catenanes by π-π stacking interaction.

以杯[4]芳烃为原料，通过三氟乙酸铊将其氧化成醌，醌类化合物在Zn粉、冰醋酸、少量盐酸和过量的乙酸酐中反应得到双乙酰化产物，利用氢氧化钠使其水解，然后再与各种对甲苯磺酸二酯进行环化反应，得到一系列具有富电子空腔的杯[4]芳烃并冠醚。

The process of extraction of tangerine peel was studied and the optimum conditions (temperature 80℃, dye concentration 200 g/L, NaOH concentration 40 g/L, time 30 min) of colourant extraction were decided by orthogonal experiments and single factor analysis.

通过正交试验及单因素分析，得出桔子皮最佳萃取工艺条件：温度80℃、染料质量浓度200g/L、氢氧化钠质量浓度40g/L、时间30min。

Fluoride ion and iodide ion adsorbed on the PAN fiber could be desorbed by Al(NO_3)_3 and NaOH. And this process showed the fiber was easy to desorb and can be used repeatedly.

又以硝酸铝和氢氧化钠分别用来对吸附了两种离子的纤维进行解吸，表明该纤维易于解吸，容易再生，而且多次重复使用性能良好。

A solvent-free Darzens condensation reaction for the preparation of epoxide compounds in the presence of NaOH by grinding was achieved.

在无溶剂、氢氧化钠的作用下，用研磨的方法、通过Darzens缩合反应制备环氧化合物。

The best conditions for deinking agent h were: pulping consistency, 10%; pulping temperature, 60 C; pulping time, 20min; no heating preservation; flotation temperature, 60 C; flotation time, 8min; flotation consistency, 0.8%; deinking agent dosage, 0.1%; deinking agent addition point, 30% in pulper and 70% in flotation cell; Na2SiO3 dosage, 3%; EDTA dosage, 0.2%; NaOH dosage, 1%; H2O2 dosage, 2%; Na2SO4 dosage, 1%.

脱墨剂h的最佳脱墨条件为：碎浆浓度，10％；碎浆温度，60℃；碎浆时间，20min；不保温；浮选温度，60℃；浮选时间，8min；浮选浓度，0.8％；脱墨剂h用量，0.2％；脱墨剂加入点，30％加入碎浆机中，70％加入浮选槽中；硅酸钠用量，2％；EDTA用量，0.2％；氢氧化钠用量，1％；过氧化氢用量，2％；硫酸钠用量，1％。

The best conditions for deinking agent soap were: pulping consistency, 10%; pulping temperature, 50 C; pulping time, 20min; heating preservation time,15min; flotation temperature, 45 C; flotation time, 8min; flotation consistency, 0.8%; soapdosage, 0.6%; soap addition point, 70% in pulper and 30% in flotation cell; Na2SiO3 dosage, 3%; EDTA dosage, 0.2%; NaOH dosage, 1%; H2O2 dosage, 2%.

钠皂的最佳脱墨条件为：碎浆浓度，10％；碎浆温度，50℃；碎浆时间，20min；保温时间，15min；浮选温度，45℃；浮选时间，8min；浮选浓度，0.8％；脱墨剂钠皂用量，0.6％；钠皂加入点，70％加入碎浆机中，30％加入浮选槽中；硅酸钠用量，3％；EDTA用量，0.2％；氢氧化钠用量，1％；过氧化氢用量，2％。

The corrosion behavior of the microwires in aqueous HF solution and melting NaOH were investigated respectively,and the anti-corrosion property of glass-coated pure copper microwires in strongly acid and strongly alkali were analyzed with the corrosion mechanism being discussed.

采用熔融纺丝法制备了玻璃包覆纯铜微丝，对微丝表面玻璃包覆层的去除进行了实验研究，评价了微丝在氢氟酸和熔融氢氧化钠中的腐蚀行为，分析了玻璃包覆纯铜微丝在强酸和强碱中的耐腐蚀性能，探讨了其腐蚀机理。

The NaOH/glycerol solution act as a initiator for the random rearra-ngement of the fatty acids among the glycerides of palm oil .

在此方法中，采用氢氧化钠／甘油溶液作为脂肪酸随机重组的引发剂。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。