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Hovedbrug af phenolphthalein

Hovedbrug af phenolphthalein

1. Used as an acid-base indicator and an indicator for determining the acid value of oil Phenolphthalein has a very interesting color-changing reaction. Under syre-nær-neutrale forhold (PH0-8.2), phenolphthalein -molekyler adskiller sig ikke og er farveløse. In the...
Syntese af trimethyl orthoacetat

Syntese af trimethyl orthoacetat

Trimethyl orthoacetat, Også kendt som trimethoxyethan, er en vigtig primær syreester, den molekylære formel (C5H12O3) bruges hovedsageligt i medicin, pesticider, krydderier og anden syntese. De sædvanlige syntesemetoder er acetonitrilproces, which uses...
Synteseproces af dichloracetylchlorid

Synteseproces af dichloracetylchlorid

Dichloroacetyl chloride is an important intermediate in the production of insecticides and herbicides, and is also widely used in the field of auxiliaries and pharmaceutical synthesis. The main synthesis methods are dichloroacetate acyl chloride method and...