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- polyhydric aldehydes 多羟醛
- Aldehydes possess anesthetic properties. 醛类具有麻醉的作用。
- The negative univalent radical HCO,characteristic of aldehydes. 甲酰负的单价HCO原子，具乙醇的特性
- The negative univalent radical HCO, characteristic of aldehydes. 甲酰负的单价HCO原子，具乙醇的特性
- There are several examples of a one-carbon degradation leading to aldehydes. 有一些减少一个碳原子制备醛的实例。
- Both the alcohols and aldehydes are secondary products of the oxidation. 醇和醛两者为氧化的次级产物。
- The contents of polyhydric alcohol in 17 brand cigarettes were determined. 对17个品牌的国内外卷烟中多羟基醇类物质的含量进行了定量分析。
- Any of the class of compounds formed from aldehydes combined with alcohol. 醛缩醇，醛缩二醇任何一种由乙醛和乙醇结合而成的化合物
- The technique is also suitahe to synthesis of other aromatic aldehydes. 该工艺也适用于其它芳香醛的制备。
- These reactions are therefore used to discern between ketones and aldehydes. 这些化学反应因此被用来区分醛类和酮类。
- It is produced by the reduction of fuchsin by sulfurous acid, and is oxidized by aldehydes and ketones, restoring the magenta color of the fuchsin. 配法是用亚硫酸使品红溶液还原，若有醛酮类存在时便使之氧化而重新呈现品红本身的洋红色。
- As sorbitol is one of the polyhydric alcohols, the aforesaid Regulations are not applicable to sorbitol. 由于山梨醇是多羟醇的一种,因此该规例不适用于山梨醇。
- In reality, readily characterizable high polymers are formed only from aliphatic aldehydes RCHO. 事实上有代表性的高聚物仅仅是由脂肪醛RCHO制得的。
- The breakdown of amino acids which occurs as the flavanols are oxidized gives rise to aldehydes in black tea aroma. 黄烷醇氧化时发生的氨基酸降解，产生了红茶香气中的醛类物质。
- Alkyds are the condensation product of polybasic acids and polyhydric alcohols (polyls). 多元醇酸树脂由多元酸和多元羟基缩聚而成。
- A methods was develped for the analysis of polyhydric alcohol in cigarettes by gas chromatography. 本文研究了采用毛细管气相色谱仪分析卷烟中多羟基醇类化合物的方法。
- Results The optimum matrix composition and process involved lanolin, liquid paraffin,glycerine,polyhydric amide a... 结论按此法制备的乳膏剂符合中国药典2005年版有关软膏剂的规定。
- The liquefied product was far more reactive than polyhydric alcoholysised liquefied products. 天然木质纤维素更 由多物种混合而成，成分十分复杂。
- This paper introduces the production, application and the need forecasting of polyester polyhydric alcohol. 本文着重介绍了聚醚多元醇的生产,以及在聚氨酯生产中的应用和市场需求预测。
- The reaction of sulfate with aldehydes and ketones has been known for many years. 大家知道硫酸盐能与醛类和酮类反应已有许多年了。
