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- petroleum ether soluble matter 石油醚可溶物
- Four compounds were isolated from the petroleum ether soluble portion,identified as 28-aldehyde-taraxerenone(1),28-hydroxy-taraxerenone(2),epi-friedelanol(3), 4-methyl stigmast-7-en-3-ol(4). 从石油醚部位分离鉴定了4个化合物:3-羰基-14-taraxeren-28-醛(1),3-羰基-14-taraxeren-28-醇(2),表无羁萜醇(3),4-甲基-豆甾-7-烯-3-醇(4);
- To wash or percolate the soluble matter from. 把桌布上的墨迹洗掉。
- Properties: This product is weakly alkaline, slightly soluble in cold water and acetaldehyde, slightly soluble in hot water, soluble in ethanol, practically insoluble in benzene, and petroleum ether. 性状:本品呈弱碱性,微溶于冷水和乙醛,稍溶于热水,易溶于乙醇,几乎不溶于苯和石油醚。
- Amon-g of them, YNN-1 and YNN-3 were obtained from the petroleum ether extract. 其中化合物HX-3、LFM-7由石油醚部分获得;
- The ether soluble compounds of the reaction product were analyzed by GC/MS.The major iden tified compounds were pyrazine and furan compounds. 该反应产物的醚溶性成分经GC/MS分析显示,其主要成分为吡嗪类和呋喃类化合物。
- Objective To study the chemical constituents of the petroleum ether extract fraction from Caragana microphylla Lam. 目的对小叶锦鸡儿石油醚提取物进行化学成分研究。
- To purify(a gas) by passing through or over a liquid, as to remove soluble matter. 洗涤(气体)用使(气体)通过某一液体以除去其中可溶性物质的方法使(气体)变纯
- Results Petroleum ether could effectively clean the dirt in the umbilicus,and had less skin irritation. 新洁尔灭酊具有较好的消毒效果但对皮肤有刺激性;
- Study on Chemical Constituents of Petroleum Ether Extract Fraction from Caragana microphylla Lam. 关键词:小叶锦鸡儿;石油醚;黄葵内酯;二十四烷酸;
- Alkali: A soluble matter that forms hydroxyl ions in solution. e.g. NaOH or KOH. 碱:在溶液中可形成氢氧根离子的可溶性物质。例如氢氧化钠或氢氧化钾。
- This paper studied on oat oil from deshelled oat seeds by petroleum ether extraction. 本课题以脱壳燕麦为原料,经石油醚提取得到燕麦油。
- Study on Chemical Components of Petroleum Ether Fraction of Alcohol Extract from the Leaves of Cunninghamia lanceolata Hook. 杉木叶醇提物中石油醚溶解组分的化学成分分析。
- The content of petroleum ether extract in the CB-1 Cutter of 2 curing technique,3 maturities and 2 sampling ways were determined. 测定了2种烘烤工艺、3个成熟度和2种取样方式的CB-1品种中部叶烤后石油醚提取物的含量。
- Descurainia sophia seeds were defatted with petroleum ether and then their glucosinolates were extracted with boiling water. 用石油醚对播娘蒿种子脱脂,热水提取,并采用DEAE sephadex A-25层析预处理,除去杂质,得到播娘蒿种子的硫苷提取液。
- Methods:Hydrogenated terphenyls in the air was collected with petroleum ether or chorcoal turb and then determined by spectrophotometer. 目的:建立作业场所空气中氢化三联苯的采样和测定方法。
- Objective:To study the effects of Calotes versicolor petroleum ether extracts(CVPE)on serum testosterone,NO and accessory sex organs of castrated mice. 目的:研究马鬃蛇石油醚提取物(CVPE)对去势大鼠血清睾酮、一氧化氮(NO)及附性器官的影响。
- It is proposed that petroleum ether should be preferentially used as the organic extracting a-gent and spectrophotometers of the same type shoul... 建议应优先使用石油醚作为有机剂,在使用设备上应统一用一种型号的分类光度计。
- Conclusion:The most effective method to identify the Cornus officinale and Cornus chinensis is the petroleum ether sample solution with UV spectrum. 结论:石油醚样品溶液紫外光谱区别川鄂山茱萸和山茱萸最为有效。
- Three different extracts were obtained after freeze-dried Coriandrum sativum L was processed by petroleum ether, 95%-ethanol, and water respectively. 摘要分别用石油醚、95%25乙醇、水浸提芫荽,获得浸提液。