Ingredient: This product is a kind of carboxymethyl cellulose sodium salt ,which generated from the interaction between Absorbent cotton gauze in alkaline conditions and chloroacetic acid .

成份：本品為脫脂棉紗布在堿性條件下與氯乙酸作用生成的纖維羧甲基醚的鈉鹽。

Using refined cotton, chloroacetic acid, sodium hydroxide and hydrogen peroxide as main feedstock, sodium carboxymethyl cellulose was made by the process of basification, etherification, abstersion and drying.

以精制棉色综合网站久久久久久、氯乙酸愉拍自拍视频在线播放网站下载、氫氧化鈉和過氧化氫為原料，經(jīng)過堿化黄色网欧美日朝、醚化另类激情一区二区三区、洗滌、干燥色色色色色色论坛，制得羧甲基纖維素鈉一级A片的网址。

Sulfur method replaced by acetic anhydride method for chloroacetic production is the trends in domestic.

指出在國內(nèi)用醋酐法代替硫磺法生產(chǎn)氯乙酸的必然趨勢黄色网站地址一。

This paper introduces in detail the factors influencing the yield of the amino acetic acid with the chloroacetic acid ammonolysis process, and connecting with the production procedures, makes deep analysis, and puts forward some corresponding methods for increasing the yield.

詳細介紹了氯乙酸氨解法氨基乙酸生產(chǎn)過程中影響收率的因素，并結(jié)合生產(chǎn)過程進行了深入分析夜夜澡人模人人添人人看，有針對性地提出了提高收率的辦法国产乱弄免费视频观看。

The results show, there are many methods for Chloroacetic acid production, but only the Catalytic Chlorination of acetic acid is extensively applied.

結(jié)果表明，氯乙酸的生產(chǎn)方法很多福利视频免费，但只有乙酸催化氯化法實現(xiàn)了廣泛應(yīng)用香港之色鬼强奸女交警。

Effects of ratio of p chlorophenol to 2 chloroacetic acid,reaction temperature,reaction time and pH value on the reaction were studied.

對原料配比、反應(yīng)溫度一道本激情、反應(yīng)時間和溶液pH值等各種反應(yīng)條件的影響作了詳細研究欧美性交操B。

P chlorophenoxyacetic sodium was synthesized by p chlorophenol with 2 chloroacetic acid in the 20% hydroxide sodium aqueous solution.

采用一步法由氯乙酸與對氯苯酚在氫氧化鈉質(zhì)量分數(shù)為 0 2的水溶液中的反應(yīng)制得。

When the molar ratio of 2 chloroacetic acid∶ p chlorophenol is 1.25 and pH=5～7 at 104 ℃ reaction for 20 min in the 20% NaOH solation,the yield of PCPA can be reached 90%.

氯乙酸∶對氯苯酚為 1 2 5 中文字幕,大黄片，質(zhì)量分數(shù)為 0 2的氫氧化鈉溶液中超碰在线视屏观看，pH值在 5～ 7之間，溫度在 10 4℃左右為宜www.hzweisun.com/，反應(yīng)時間為 2 0min 欧美三级A，PCPA收率為 90 3%。

The optimum synthetic conditions of ethyl chloroacetate are: molar ratio of chloroacetic acid to ethanol is 1:8, the quantity of catalyst[Fe2(SO4)3 xH2O] is 10% of the mass of chloroacetic acid, reaction time is 1 hour, 5A zeolite was used as dehydrating agent. In these conditions, the yield of ethyl chloroacetate was up to 73%.

用Fe_2(SO_4)_3·xH_2O作為催化劑合成氯乙酸乙酯的較佳反應(yīng)條件是：酸醇物質(zhì)的量之比為1：8一級毛片黃色網站美女性爱，催化劑用量為氯乙酸質(zhì)量的10％国产三级伦视频，以5A分子篩作為脫水劑，回流時間1h欧美一级AA在线观看，收率達73％以上加勒比无码HEZYO。

Up to day, the batch process of producing chloroacetic acid is still extensively used in our country, by which byproduct dichloroacetic acid comes out while chloroacetic acid beingproduced.

控制反應(yīng)體系中氯乙酸含量不超過30%，最終所得產(chǎn)品氯乙酸含量達98.5%亚洲实拍在线播放，二氯乙酸含量小于0.5%亚洲色图欧美日韩，以目前實驗裝置24小時可得氯乙酸2.938kg。