A similar color is produced bysulphocyanide of potassium, as found in the saliva; but the color of the meconate is not discharged by chloride of gold; the sulphocyanide is.
Upon treating blood stains with chlorine-water, a solution which contains chloride of iron, and acquires a red coloration by the addition of sulphocyanide of potassium, is formed.
Sulphocyanide of potassium is highly esteemed as a reagent for the restoration of writing, if iron is present.
To mix a bath, take of the sulphocyanide solution half-an ounce; to this add eight ounces of water.
The proper way to mix this bath is to add the gold to the solution of sulphocyanide a little at a time.
The sulphocyanide and gold is perhaps the chief favourite.
It will be noticed that as the gold solution drops into the sulphocyanide solution an orange-red precipitate is formed, which is redissolved on stirring.
Thus, to mix this bath, take an ounce of the above-mentioned sulphocyanide solution dilute with twenty ounces water.
Then add this dilute gold solution a little at a time to the eight ounces of sulphocyanide solution, and stir well with a glass rod.
As ammonium sulphocyanide is somewhat deliquescent, it is convenient to keep it in solution.
If hydrocyanic acid is present, the sulphocyanide of iron will be formed of a striking blood-red colour.
The sulphocyanide of mercury gives, when burnt, a most abundant ash, a fact utilised in the toy known as Pharaoh's serpent; the products of combustion are mercurial vapours and sulphurous anhydride.
All the compounds of lead are said to be poisonous; but this statement cannot be regarded as entirely correct, for the sulphocyanide has been proved by experiment not to be so,[823] and the sulphide is also probably inactive.
The chemical toy sold under this name consists of the powder of sulphocyanide of mercury made up in a capsule of tin foil in a conical mass of about an inch in height.
Sulphocyanide of potassium gives an intense ruby-red colour to neutral or acid solutions.
By the addition of concentrated chlorine water, in excess, to either solution, white flocks of albumen and chlorhaematin separate, which are free from iron, as tested by sulphocyanide of potassium.
A basic substance, formed, along with carbonic acid, when the volatile oil of mustard, orsulphocyanide of allyl, is treated with oxide of lead.
Sulphocyanide of mercury is the toy called “Pharaoh’s Serpent.
The first bowl will have the silver cyanide, the second should be treated with ferric and ferrous salt and hydrochloric acid for Prussian blue (vide), the third evaporated and ferric chloride added for the sulphocyanide test.
If HCN be present, it will have formed sulphocyanide with the ammonium sulphide, and will therefore generate a blood-red colour with the ferric chloride.
Exposed to the air for twenty-four hours, all the above samples had lost their odour, and failed to give the sulphocyanide reaction.
The reaction is made quantitative by comparing the tint with that produced by a known quantity of sulphocyanide and ferric solution (Herapath).
It is important to notice that traces of sulphocyanide are naturally present in the saliva.
The ammonium sulphide would combine with the HCN to form sulphocyanide of ammonium, which is inodorous, but, by distillation with acids, gives HCN.
The general lesson taught by Clark's experiments is that the sulphocyanide bath gives better results than any other.
On the whole, the bath that has given the best results is one containing, in addition to gold, a small quantity of hypo and a considerable quantity of sulphocyanide of ammonium.
Any of the ordinary alkaline toning baths may be used, but they all give results inferior to those got by the sulphocyanide bath.
They are decidedly more pleasing than those of 7 or 8, but are not as good as the best by the sulphocyanide bath.
Frequently the prints appear yellow from formation of the double sulphocyanide of copper, but the color disappears by washing in water.
Dissolve the carbonate, citrate, and sulphocyanide with the aid of heat and enough water to make 800 c.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulphocyanide" in a variety of sentences. We hope that you will now be able to make sentences using this word.
