The reaction conditions such as dosages of catalyst, 1, 4 dioxane and water, solvent type, reaction temperature and time, adding method were also studied.
同时还研究了催化剂用量、1,4二氧六环的用量、溶剂种类、反应温度、反应时间、水量及加水方式等对该反应的影响。
A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.
采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP -1 0。
Read labels: Select products for baby and yourself that don't contain the ingredients listed above, which are commonly contaminated with formaldehyde or 1, 4-dioxane.
阅读标签：为宝宝和你自己选择不含有上面列出的原料的产品，那些原料往往会导致甲醛和1,4-二恶污染。
Formaldehyde and 1, 4-dioxane are known carcinogens; formaldehyde can also trigger skin rashes in some children.
甲醛和14 -二恶烷是已知的致癌物质；甲醛还会引发一些儿童起皮疹。
Contrary to industry statements, there are no regulatory standards that limit formaldehyde, 1, 4-dioxane or most other toxic chemicals in personal care products sold in the United States.
与业界宣称的相反，在美国，对销售的个人护理产品中甲醛、1,4 -二恶烷和其他大多数有毒化学物质的含量限制并没有监管标准。
4-dioxane is a byproduct of a chemical processing technique called ethoxylation, in which cosmetic ingredients are processed with ethylene oxide.
4 -二恶烷是一个叫做乙氧基化的化学加工过程的副产品，在这个过程中，化妆品原料和环氧乙烷一起进行处理。
17 out of 28 products tested - 61 percent - contained both formaldehyde and 1, 4-dioxane.
28件被测产品中的17件- 61% -同时含有甲醛和1 4 -二恶烷。
17 out of 28 products tested 61 percent contained both formaldehyde and 1, 4-dioxane.
28件被测产品中的17件- 61% -同时含有甲醛和1,4 -二恶烷。
Common ingredients likely to be contaminated with 1, 4-dioxane include PEG-100 stearate, sodium laureth sulfate, polyethylene and ceteareth-20.
常见的有可能造成14-二恶烷污染的原料包括聚乙二醇硬脂酸酯、月桂醇聚醚硫酸酯钠盐、聚乙烯和鲸蜡硬脂醇聚醚-20。
The European Union has banned 1, 4-dioxane from cosmetic products. And formaldehyde is not allowed in cosmetics sold in Japan and Sweden.
欧盟已经禁止了在化妆用品中使用1,4 -二悪烷。而日本和瑞典也已禁止化妆品中含有甲醛。
California requires that products that contain more than 30 parts per million of 1, 4-dioxane carry a warning saying that the contents may cause cancer.
加利福尼亚州要求的产品中含有了超过百万分之30的1,4 -二恶烷是应该有警示说此产品中含有可能会引发癌症的物质。
In an earlier test, CSC found that many products labeled "natural" or "organic" contained 1, 4-dioxane.
在更早的检测中，CSC发现许多贴有“自然”或“有机”标签的产品中含有1,4 -二悪烷。
The Consumer product safety Commission, which regulates household cleaners, has no limit for 1, 4-dioxane and evaluates the safety of products on a case-by-case basis, spokesman Scott Wolfson said.
管理家用清洁剂消费者产品安全的委员会并没有任何限制1,4 -二恶烷六环的含量，并没有在个案的基础上评估产品安全，发言人斯科特·沃尔夫森说。
Impurities in the dioxane were determined. The analysis method has important directive value for separating and purifying 1, 4-dioxane with azeotropic rectification.
确定了1,4 -二氧六环中所含的杂质，对共沸精馏法分离及提纯1,4 -二氧六环有重要指导价值。
Impurities in the dioxane were determined. The analysis method has important directive value for separating and purifying 1, 4-dioxane with azeotropic rectification.
确定了1,4 -二氧六环中所含的杂质，对共沸精馏法分离及提纯1,4 -二氧六环有重要指导价值。
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