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| No.13630800
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Information Name: | Jing Chi Bose equipment operators, [charcoal] reagents, reagent |
Published: | 2014-12-17 |
Validity: | 0 |
Specifications: | Limited |
Quantity: | |
Price Description: | |
Detailed Product Description: | Phenol molecule by a hydroxy group directly attached to the benzene ring. According benzene Kekule formula, the hydroxyl groups are attached to the double bond of the enol structure. However, due to the stability of the benzene ring, such a structure is hardly converted to the keto form. Phenol resonance structure as above right. An oxygen atom of a phenolic hydroxyl group using sp hybridization, provides one to six carbon atoms with lone electron delocalized phenyl ring together form a bond. Large π bond strengthened acidic alcohol, pushing electronic effects hydroxyl citric acid reagent has strengthened polar OH bonds, and therefore hydrogen phenolic hydroxyl groups can be ionized out. Product Code: 2171536616 Product Name: indicator category Specifications: AR25G Remarks: All kinds of indicators Category :( a) chemical reagent chemicals in a class. Under certain conditions of the medium, which can change the color of the indicator, can produce turbidity or precipitate, and the fluorescence phenomenon. It is commonly used in the pH of the test solution; titration analysis is used to indicate the titration end point; environmental testing in the test of harmful substances. Generally divided into acid-base indicator, redox indicator, metal indicator, such as adsorption indicator. To indicate the endpoint of the titration reagents. In all types of titration reagents, with the addition of the titrant, is the concentration of substances and titrant titration are constantly changing, such as when in the vicinity of large charcoal reagent ion concentration changes occur, capable of this ion concentration make changes in the display (such as changing the color of the solution to generate precipitation, etc.) reagents called indicator. If titration Titrant or substance is colored, which itself has a function of the indicator, such as potassium permanganate. Jing Chi Bose equipment operators, [charcoal] reagents, reagent provided by Jing Chi Bose equipment operators. Looking for "Bose equipment, plastic products, laboratory supplies, hardware, labor insurance and office supplies." Reliable suppliers, choose a whole network business alliance certification: Dongguan Changan Jing Chi Bose equipment operators (www.jingchb .com), honest and reliable "business alliance customer service" on page now click on live chat with us now! |
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Copyright © GuangDong ICP No. 10089450, Dongguan Changan Jing Chi Bose equipment operators All rights reserved.
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You are the 9861 visitor
Copyright © GuangDong ICP No. 10089450, Dongguan Changan Jing Chi Bose equipment operators All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility