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- A method for determining hydroxyl value of epoxy-containing polyester,namely acetyl chloride method is introduced. 介绍了一种含环氧基聚酯的羟值测定方法,即乙酰氯法。
- Determination of Hydroxyl Value of Epoxy-Containing Polyester by Acetyl Chloride Method 乙酰氯法测定含环氧基聚酯羟值
- acetyl chloride method 乙酰氯法
- The reaction 5-amino-lH-pyrazole with 2,4-dichlorophenoxy acetyl chloride was studied. 研究了5-氨基-1H-吡唑与2,4-二氯苯氧乙酰氯反应的选择性和反应性能。
- The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent. 通过对其酰化原理分析,选用乙酰氯作酰化剂、二氯甲烷作酰化溶剂,测定含环氧基聚酯的羟值。
- The synthesis was done of xanthoxylin taking phloroglucinol and acetyl chloride as the raw materials with the yield of 44.6%. Some factors affecting the yield were studied. 借鉴类似物的合成方法,以间苯三酚和乙酰氯为原料,人工合成花椒油素,以间苯三酚计,总收率44-6%25,并对影响反应收率的因素进行了考察。
- Blood-Determinatoin of cholinesterase activity-Spectrophotometric method-Hydroxylamine-ferric chloride method. 全血胆碱酯酶活性的分光光度测定方法羟胺三氯化铁法.
- Results Their chemical structures were determined by IR, 1H NMR,MS and elemental analysis.Conclusion The acyl chloride method was feasible to th... 结果化合物的结构均经红外光谱、核磁共振氢谱、质谱及其元素分析确证。
- Using L-proline as raw material, (2R,3R)-tartaric acid as resolution agent, D-proline was prepared by asymmetric transformation, i.e. the D-proline was reacted with acetyl chloride, triethylamine and (BOC)_2O one after another. 以L脯氨酸为原料、(2R,3R)酒石酸为拆分剂,采用不对称转换的方法将L-脯氨酸转换成D-脯氨酸。
- The method Taking thymol blue as the indicateis quicker,more accurate than barium chloride method,double color indicator method and coefficientrect method. 以百里酚兰为指示剂;分析可溶性硅酸盐体系中混合碱的方法;较之氯化钡法;双指示剂法及系数校正法快速、准确;相对误差在0.;2%25以下。
- Extractant N-butyldiacetylimide(short as BDAI) is synthesized under the condition of salt-ice,with n-butylamine and acetyl chloride as raw materials and triethylamine as catalyst. The structure is identified by NMR,MS,IR and UV.The yield is at least 86%. 以正丁胺和乙酰氯为主要原料,三乙胺为缚酸剂,在盐冰浴条件下合成了酰胺类萃取剂N-正丁基二乙酰亚胺(简写为BDA I),通过NM R、M S、IR、UV等分析手段鉴定了它的具体结构,收率高达86%25。
- It is proved that the improved ioditori method is suitable for it but the ammonium chloride method、ioditori method and sulphurous acid method will introduce great deviation. 实验先合成阻燃性树脂,分析阻燃树脂中甲醛含量,将树脂渗入木材中后,再分析木材中游离甲醛的含量。通过对多种方法的实验,确认了对阻燃性树脂,改进的碘量法较适合其中游离甲醛的分析测定,而亚硫酸钠法、氯化铵法以及盐酸羟铵法不适合;
- Acetamidobenzoic acid was synthesized from 2-nitrotoluene via oxidation with potassium permanganate, reduction with ion powder and amidation with acetyl chloride in an overall yield of 48.5%. 邻硝基甲苯用高锰酸钾氧化得邻硝基苯甲酸;铁粉还原得邻氨基苯甲酸;在无水碳酸钾存在下;与乙酰氯回流得邻乙酰胺基苯甲酸;总收率48.;5%25。英文翻译;英语:
- And the amount of dichloroacetic acid is higher when the photo-catalysis is used.The acetyl chloride catalyzed by sulfur or acetic anhydride acts as the real catalyst for chlorination of acetic acid. 硫磺催化和醋酐催化产生的乙酰氯是真正的乙酸氯化催化剂。
- Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor. 对可用于各种调味香精的食用香料硫代乙酸甲酯的合成进行了初步研究,产率达到693%25,对所合成的产品做了红外光谱分析和质子核磁共振分析,确定了其化学结构。
- This series of powder activated carbon are produced through zinc chloride method with sawdust as raw material. They are full of internal pore, great adsorbability, and with quick filtration. 本系列产品以木屑等为原料,采用氯化锌法生产,具有孔隙结构发达、吸附容量大、过滤速度快等特性。
- Difenoconazole was prepared with m-dichlorobenzene and acetyl chloride as starting materials by acetylation, etherification, bromination, cyclization and condensation. 摘要以间二氯苯、乙酰氯等为起始原料,经酰化、醚化、溴化、环化和缩合反应,合成了苯醚甲环唑。
- The method seems good but it needs to be tried out. 这个方法似乎不错,但需要试验一下。
- 2-( 9-carbazole ) acetyl chloride 2-(9-咔唑)乙酰氯
- 3-(3-t-butoxyl)succinimide acetyl chloride 3-(3-叔丁氧基)丁二酰亚胺乙酰氯