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酸度的酚酞法测定。Determination of acidity to phenolphthalein.

本发明还可加入酚酞或酚酞类酸碱指示剂作显色指示。Phenolphthalein or indicator of such a kind is used as colour indicator.

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选择溴甲酚绿和酚酞一百里酚酞为指示剂。Bromoc-resol Green and Phenolphthalein-Thymolphthalein were selected as indicators.

它与酚反应生产酚酞，可用作指示剂、染料和医药。It is reacted with phenol to produce phenolphthalein, used as an indicator, a dye, and a pharmaceutical.

通过酚酞试剂、XRD、SEM分析等方法，对水玻璃激发的碱矿渣水泥砂浆的抗碳化性能进行了研究。Resistance of water glass-activated slag mortars to carbonation was studied by phenolphthalein, XRD and SEM.

通过氯甲基化、胺化、水解等反应，制得了OH型季胺化酚酞型聚醚砜阴离子交换膜。Through chloromethylated, aminate and hydrolytic reaction, OH-form quaternized PES-C membranes were synthesized.

它是由透明丙烯清漆、酚酞指示剂和染成粉红色的碱性介质混合制成。It is by transparent propylene varnish, phenolphthalein indicator is mixed catch pink alkalescent medium to mix make.

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目的探讨子宫切除术后酚酞在促进肠功能恢复中的作用。Objective To discuss the effect of phenolphthalein in promoting the recovery of intestinal function after hysterectomy.

苯酚酞一种白色或淡黄色的晶体粉末，c20h14o4，用作酸性指示剂，用于制染料，并在医学上用作一种轻泻剂。A white or pale yellow crystalline powder, C20H14O4, used as an acid-base indicator, in making dyes , and in medicine as a laxative.

提出了采用百里酚酞和酚酞混合指示剂作为顺丁烯二酸酐含量测定的新指示剂。The mixed indicator of thymolphthalein with phenolphthalein was applied as the new indicator for the determination of maleic anhydride.

把岩屑放到磁盘上，滴酚酞溶液，如果颜色变红，说明岩屑里有水泥。Put cutting onto porcelain and drop liquid of phenolphthalein on it , if the color turn into red , that means there is cement in the cutting.

提出了采用百里酚酞和酚酞混合指示剂作为顺丁烯二酸酐含量测定的新指示剂。So the mixed indicator of phenolphthalein with alizarin red-methyl red could be used as the new indicator for the alkalify water determination.

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运用酒精、硬脂酸、氢氧化钠、酚酞、硝酸铜、硝酸钴等原料，制备彩色固体酒精。The colored solidified alcohol has been prepared by utilizing alcohol, stearic acid, sodium hydroxide, phenolphthalein, copper nitrate and cobalt nitrate.

进行了氢氧化钠溶液和酚酞溶液的混合反应实验，实验证明该化学反应器可以用于微化学反应。The performance of the micro chemical reactor was evaluated by the mixing-reaction experiments of sodium hydroxide solution with phenolphthalein solution.

指出采用六次甲基四胺麝香酚酞体系比用二甲基甲酰胺酚酞体系能更准确地表征PTA的纯度。It is pointed out that the PTA purity can be characterized more accurately by the means of hexamethylenetetramine Nsystem than by N, Ndimethyl formamide phenolphthalein system.

山西柳青药业有限公司是中国最大的酚酞产品专业生产厂家，年产酚酞1000吨、黄酚酞1000吨。Shanxi Liuqing Pharmaceutical Co. , Ltd is the Largest phenolphthalein manufacturing factory in China. Produce 1000 tons of phenolphthalein, yellow phenolphthalein is 1000 tons per year.

为了提高酚酞溶液检测碱性电池密封性能的可靠性，就必须减少配制酚酞试剂酒精中的含水量，同时也必须降低测试环境湿度。In order to increase reliability using phenolphthalein solution to detect alkaline cell sealing characteristics, the water in the alcohol was decreased, environment humidity were requisite.