acetic anhydride 中文意思是什麼

acetic anhydride 解釋
醋酸酐
  1. Add the crystalline dihydrate(5g)to acetic anhydride(10)in a beaker.

    向盛有10醋酸酐的燒杯內加入5g二水合物結晶。
  2. This may be readily converted to the anhydrous salt by reaction with a readily hydrolysed material, such as acetic anhydride.

    這和易水解的物質如醋酸酐反應可以很容易轉變為無水鹽。
  3. Acetic anhydride for industrial use. methods of test

    工業用醋酸酐.試驗方法
  4. In order to find replacer for metronidazole and drug selection. some diesters or esters of acids containing nitrogen with metronidazole were designed and synthesized, which have difference in water - solubility. metronidazole was reacted with the corresponding amino or imino multi - carboxylic acid compounds in the presence of acetic anhydride or thionyl chloride or dcc. the intermediate of nitrilotriacetic acid with ac

    為尋找羥乙基甲硝唑的替代物，分別採用酸酐法酰氯法或dcc法，將氨基羧酸與羥乙基甲硝唑反應，得到5個親水性不同的單酯或二酯，用ms譜確證了次氨基三乙酸與乙酸酐反應的中間物，並對得到的酯的
  5. Acetic anhydride, ephedrine, potassium permanganate and other controlled chemicals

    乙酸酐、麻黃? 、高錳酸鉀及其他受管制化學品。
  6. The effect of the catalysts, e. g., concd. sulfuric acid, p - toluenesulfonic acid, dodecylbenzenesul - fonic acid on the esterification of starch was studied with cassava starch as the raw material, acetic anhydride as the esterifying agent and acetic acid as the dispersion medium

    摘要以木薯澱粉為原料，用醋酸酐為酯化劑，以乙酸為分散遞質，探索了以濃硫酸、對甲基苯磺酸、十二烷基苯磺酸為催化劑對澱粉醋酯化反應的影響。
  7. Non - ionic surface active agents - polyethoxylated derivatives - determination of hydroxyl value - acetic anhydride method

    非離子表面活性劑聚乙氧基化衍生物羥值的測定乙酐法
  8. Non - ionic surface active agents. polyethoxylated derivatives. determination of hydroxyl value. acetic anhydride method

    非離子表面活性劑.聚乙氧基衍生物.羥基指數的測定.酸醋酐法
  9. Chemical analysis of acetic acid and acetic anhydride. determination of mercury

    醋酸和醋酸酐的化學分析.汞含量的測定
  10. The government of turkmenistan is urged to join the operation as soon as possible and to ensure that traffickers will not target its territory for use as part of a route for smuggling acetic anhydride through the region

    麻管局敦促土庫曼斯坦政府盡快加入該行動，並確保販運者不會把其領土當作通過該區域走私醋酸酐的一段路徑。
  11. The influence of reaction time, reaction temperature and acetic anhydride volume on the degree of acetylation is discussed

    介紹了在用乙酸酐處理甲殼胺纖維制備再生甲殼素纖維過程中，反應溫度、乙酰酐用量對乙酰化的影響。
  12. In this paper, 1, 1 - diacetate was synthesized from furfural and acetic anhydride by acidic bentonite friendly to environment as catalyst with excellent yield ( 87. 6 % )

    摘要利用對環境友好的酸性皂土做催化劑，糠醛與乙酸酐發生縮合反應合成了1 ， 1 -二乙酸酯，產率高達86 . 6 % 。
  13. Oxidative desulfurization of straight - run diesel oil by hydrogen - peroxide acetic anhydride

    乙酸酐氧化脫除直餾柴油中的含硫化合物
  14. Standard test method for analysis of acetic anhydride using gas chromatography

    用氣相色譜法分析乙酸酐的標準試驗方法
  15. Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr

    對苯醌與乙酸酐經1 ， 4 -加成生成1 ， 2 ， 4 -苯三酚三乙酸酯，然後與蘋果酸反應經水解、環合反應得6 ， 7 -二羥基香豆素，再經甲基化得到6 ， 7 -二甲氧基香豆素，總收率為74 . 4 % ，整個過程反應條件溫和，操作方便，適合工業生產的要求，對產品結構進行了ir和1hnmr表徵。
  16. A mixture of formic acid and acetic anhydride was found to be effective for the formation of an oxazolone, which was converted to an active ester in situ in the presence of a phenol or an n - hydroxide

    實驗發現甲酸和醋酐混合物對惡唑酮的生成非常有效，惡唑酮在苯酚或n -氫氧化物存在的條件下在原位轉化為酯。
  17. The yields of peracetic acid is studied from two different preparation methods using hydrogen peroxide and acetic acid or acetic anhydride

    摘要比較了用乙酸和乙酸酐分別與過氧化氫反應制備所得的過氧乙酸的濃度。
  18. All of 19 amino acid thiohydantoins were synthesized by using free amino acids as starting materials, acetic anhydride as the carboxyl group activating reagent and tms - itc as the derivatizing reagent. the proiine thiohydantoin was prepared by using ammonium thiocyanate ( n114scn ) as the derivatizing reagent

    本文以l -氨基酸為原料，採用乙酸酐作活化試劑， tms - itc作為偶聯試劑，制備了19種th - aa ，另外th - pro的制備是用nh _ 4scn作為偶聯試劑獲得成功的。
  19. The catalytic activity of iodine in the esterification reaction was studied by synthesis cyclohexyl acetate from acetic anhydride, cyclohexano and acetic acid, cyclohexano

    摘要以單質碘為催化劑，通過乙酸酐、環己醇及乙酸、環己醇為原料合成乙酸環己酯，對碘的催化活性進行了研究。
  20. Trifluoro acetic anhydride

    三氟乙酸酐
分享友人
分享到 Line

分享到臉書