Picric acid synthesis pdf

2019-08-22 06:11

Jun 28, 2010  Guys, sorry for the late description. I came up with this synthesis because of shitty quality of phenol. In Vietnam we only have access to ChinesePreparation of PICRIC ACID 25 g of phenol and 25 g of concentrated sulfuric acid (d1. 84gml) in a roundbottom flask equipped with an air condenser are heated together for 6 hours in an oil bath at 120C. picric acid synthesis pdf

Picric Acid is used in electric batteries, leather industry, dies, pigments, inks, paints, manufacture of colored glass, textile mordants, as a laboratory reagent, in matches and explosives. It consists in pale yellow, odorless, intensely bitter crystals of density 1, 763 and melting point 122 123C.

The methodology involves a reaction between the reducing sugar and picric acid, the decrease in the picrate concentration being monitored with the tubular electrode. Jun 03, 2014 This feature is not available right now. Please try again later. picric acid synthesis pdf Picric acid should be disposed as a hazardous waste within 2 years of initial receipt. If you decide to dispose of your wet picric acid, some options are available: 1. Make sure that any picric acid disposed of still has some water content. 2. Contact EHS for disposal (for wet solutions of picric acid only). 3.

Preparation of picric acid up vote 5 down vote favorite My textbook says Nowadays picric acid is prepared by treating phenol first with concentrated sulfuric acid which converts it to phenol2, 4disulfuric acid and then with concentrated nitric acid to get 2, 4, 6trinitrophenol picric acid synthesis pdf Abstract: Highly selective nitration of phenol and substituted phenols to the corresponding nitro compounds is accomplished under mild conditions in a liquidliquid twophase system with dilute nitric acid (6 wt ) and in the presence of a phasetransfer catalyst. Picric acid is an organic compound with the formula (O 2 N) 3 C 6 H 2 OH. Its IUPAC name is 2, 4, 6trinitrophenol ( TNP ). The name picric comes from the Greek ( pikros ), meaning bitter , reflecting its bitter taste. In microscopy, picric acid is a reagent for staining samples. It has found some use in organic chemistry for the preparation of crystalline salts of organic bases

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