研究了硝酸盐与2,6 -二甲酚的显色反应。
A color reaction of nitrate with 2, 6-dimethylphenol was studied.
棕褐色液体，主要由苯酚，甲酚和二甲酚等组成。
Brown liquid, mainly consist of phenol, cresol and xylenol etc.
介绍了对化工新产品3，5-二甲酚的研制、开发。
The research, preparation and development of the new product, 3, 5-xylenol, are introduced.
对盐和二甲酚橙的截留率随压力的升高都上升，但上升速度会逐渐减慢。
The flux of water was proportional to the operation pressure, and the rejection of inorganic salts and xylenol orange increased with increasing the operation pressure.
本文说明二甲酚异构体的生产、性质和应用，有助于对其开展综合利用。
The paper summaries the preparation, properties and application of xylenol isomers. It helps to make use of Xylenol comprehensively.
以3,5 -二甲酚为原料，硫酰氯为氯化剂、四氯化碳为溶剂，合成对氯间二甲酚。
Using 3, 5-dimethyl phenol as raw materials, sulfuryl chloride as chlorination reagent and carbon tetrachloride as solvent to synthesize chloroxylenol.
叙述了从加工煤焦油产生的副产品中提取二甲酚的工艺及控制指标，具有很高的借鉴价值。
The process and control index of extracting xylenol from the by_product produced from coal tar processing is described. It has a high reference value.
用二甲酚橙作显色剂、72型分光光度计进行血清锌检测，方法简便，适合医院化验室使用。
With xylenol orange as developer and model 721 spectrophotometer, it is simple and easy to measure human serum zinc concentration, which is suitable for hospital laboratories.
检测方法基于二甲酚橙和三价铁形成的复合物显色反应，而三价铁由过氧化物氧化二价铁得到。
The assay is based upon formation of a complex between Xylenol Orange and ferric iron, which is produced by the peroxide dependent oxidation of ferrous iron.
可用于制造染料，酚醛树脂，医药，油漆等；还可作为提取苯酚，甲酚和二甲酚等纯产品的原料。
Can be used as raw material for dyestuff, phenolic resin, medicine and oil paint. Or used as the extracting agent of pure products such as phenol, cresol and xylenol.
根据二氧化氯可氧化二甲酚橙、氯酚红使其褪色的特性，可用示差分光光度法测定水中低浓度二氧化氯的含量。
The low concentration of chlorine dioxide in water can be determined by spectrophotometry based on the chlorine dioxide can decolor and oxidize xylenol orange and chlorophenol red.
以焦油中低附加值产品工业二甲酚后馏分为原料，用精馏的方法可以得到质量分数>95%的3，5-二甲酚高附加值产品。
The result shows that high valued 3,5-xylenol with a purity of over 95% can be extracted from industry level xylenol fraction by rectification.
铅离子与固定在阴离子交换树脂上的二甲酚橙的络合反应，使试剂相光反射强度发生了很大的变化，从而使溶液中的铅离子得以测定。
The formation of the complex between lead ion and immobilized xylenol orange caused a large reflected light intensity change, and lead ion in the solution can be determinated.
采用溴甲酚紫-十六烷基二甲基苄基溴化铵法测定洗涤剂工业的生产废水或生活污水中阴离子表面活性剂的含量。
Bromcresol burple - hexadecyldimethyl benzyl ammonium bromide spectrophotometry was used in the determination of anion surface active agent in wastewater from lotion industry or sewage.
采用溴甲酚紫-十六烷基二甲基苄基溴化铵法测定洗涤剂工业的生产废水或生活污水中阴离子表面活性剂的含量。
Bromcresol burple - hexadecyldimethyl benzyl ammonium bromide spectrophotometry was used in the determination of anion surface active agent in wastewater from lotion industry or sewage.
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