The book Chemistry of the Farm And Home was written by author William Edward Tottingham Here you can read free online of Chemistry of the Farm And Home book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Chemistry of the Farm And Home a good or bad book?
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What compounds of lead and zinc are formed by the action of the hydrogen sulphide gas on these paints? The compound formed from lead is black while that from zinc is white, so that zinc white is least injured by hydrogen sulphide. Other colors than white are obtained by mix- ing carbon black and various colored pigments with the lead or zinc. Thus lead chromate gives yellow, chromic oxide gives green, ferrous ferrocyanide gives blue, and so 348 CHEMISTRY OF THE FARM AND HOME on. The best vehicl...e for lead is a thinner composed of 95 parts linseed oil and 5 parts turpentine. Japans or " driers" are often mixed with paints to hasten their drying. These are compounds of lead or manganese with oil or resin. They assist in the oxidations which produce the drying. Paints are of great service in protecting bridges and other steel structures, as well as steel and iron tools, from de- struction by rusting. For such surfaces ferric oxide is mixed in oil with other inert materials, such as calcium carbonate and clay.
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