A Lindlar catalyst is a heterogeneous catalyst that consists of palladium deposited on calcium carbonate or barium sulphate which is then poisoned with various forms of lead or sulphur like lead acetate or quinoline. It is used for the reduction of alkyne to cis-alkenes. Was this answer helpful?
Aluminium hydroxide, Al(OH)3, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs: bayerite, doyleite, and nordstrandite. Aluminium hydroxide is amphoteric, i.e., it has both basic an
apay the shipping 正在翻译,请等待...[translate] aThank you for your application. 谢谢您的应用。[translate] aActive anion 活跃阴离子[translate] aWhat is the lead time to get the new car after signing the 3 years-contract? 什么是前置时间在签署3年合同以后上新的汽车?[translate]...
2. It is contraindicated during vaccination. 3. It should be used with caution or avoided in pregnant sows. Dexamethasone can easily cause placental dysfunction. Its use during pregnancy (especially early pregnancy) can affect fetal growth and development, and may lead to deformities or even death...
In polyurethane applications,1,4-butanediol is primarily used as a component of polyesters or as a chain extender. For example, polyesters such as poly (butylene adipate) diols are formulated into urethane elastomers with excellent oil chemical and UV resistance. In addition, these materials have...
acetate of lead (orsugar of lead), chromium(II) acetate, and aluminum acetate. Most transition metal acetates are colorless salts that are highly soluble in water. At one time, lead acetate was used as a (toxic) sweetener. Aluminum acetate is used in dyeing. Potassium acetate is a ...
Over a series of hours, the acetate portion of tocopherol acetate slowly seeps into the skin, allowing tocopherol to do its work of protecting against harmful UV rays. The action promotes moisture by removing free radicals and preventing dry skin, which can lead to a visible shedding, or killi...
Method 1: A method for preparing m-cyanobenzoic acid with simple process and low production cost. This purpose is achieved by using the following process: m-cyanotoluene is used as raw material, chlorobenzene is used as solvent; cobalt acetate is used as catalyst, sodium bromide and glacial ...
a请输入您需要翻译的文本!Giasgow used to is considered Britain's second big city,famous for its elegant and impressive architecture Giasgow用于被认为英国的其次大市,著名为它典雅和印象深刻的建筑学[translate] a你有老公吗 You have the husband[translate] ...
dosage of fluocinolone acetonide in creams for treating skin diseases is 0.01-0.025%. However, as a topical corticosteroid, fluocinolone acetonide does not have antibacterial properties and may promote bacterial growth, so it should not be used for infectious skin diseases such as ringworm and ...