From sulphate or chloride of cadmium, and a solution of caustic alkali; observing to well wash and dry the precipitate.
They give the isonitrile reaction (see above) when warmed with chloroform and a caustic alkali, and form alkyl thioureas when heated with an alcoholic solution of carbon bisulphide.
Larger quantities can be detected by warming the salts with a caustic alkali or with quicklime, when the characteristic smell of ammonia will be at once apparent.
The tertiary amine is then distilled off, the residual products separated by filtration and finally hydrolysed by a caustic alkali.
By long boiling with solution of caustic alkali it is converted into metapectic acid, which does not gelatinise.
This is prepared for artists by boiling it for a short time in a weak lye of caustic alkali, precipitating the solution with an acid, and well washing and carefully drying the precipitate by a gentle heat.
The solution is then evaporated or treated with baryta water, which precipitates the last portion of foreign matters, and leaves a solution of caustic alkali.
Cotton fibres are unacted upon by caustic alkali, so that the soap used in cleaning and preparing cotton goods for dyeing need not be neutral, in fact alkalinity is a distinct advantage in order to assist the cleansing.
The second titration gives the amount of caustic alkali present, and the difference between the two the proportion of carbonate.
The amounts of caustic alkali (if any), carbonated alkali, and salt present are determined in the manner already described under Alkali and Alkali Salts.
The quantity of nigre may vary not only with the amount of water added during finishing, but is also influenced by the amount of caustic alkali remaining in the soap paste prior to fitting.
Soda crystals or soap are preferred to caustic alkali, because an excess of the latter may have a destructive effect on the fabrics.
It absorbs water exposed to the air, and dissolves in water in all proportions, partly separating from such solution on the addition of a caustic alkali.
It is important to observe that the contents of the stomach may be acid, although the death has been produced by caustic alkali.
The cotton or linen goods having been previously cleaned by steeping and washing, were, after being well drained, steeped in a solution of caustic alkali of the specific gravity of 1020.
The blue may be taken out by a caustic alkali; after which the goods must be washed: the residuary rust stain may be removed by the mixture of oxalic and muriatic acids.
They have been partially combined with caustic alkali, as in the case of Starkey's soap.
When a little dilute acid is added to the former, there is a vigorous effervescence caused by the escape of carbon dioxide, but no gas is given off when a caustic alkali is treated in the same way.
Caustic Alkali is obtained from the corresponding mild alkali in the following way.
By a simple chemical test it is easy to distinguish a mild from a caustic alkali.
When heated with nitrogenous substances, in the presence of carbonated or caustic alkali, it forms cyanides.
The metallic derivatives (phenolates, phenates or carbolates) of the alkali metals are obtained by dissolving phenol in a solution of a caustic alkali, in the absence of air.
The alkyl derivatives may be obtained by heating phenol with one molecular proportion of a caustic alkali and of an alkyl iodide.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "caustic alkali" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
