Curve showing the mean value of the dry weights of ten series of pea plants grown in the presence of sodium arsenite and nutrient salts.
Curve showing the mean value of the dry weights of ten series of barley plants grown in the presence of sodium arsenite and nutrient salts.
When complete solution has been effected the arsenic solution is run off into the vat containing the solution of the sulphate of copper, arsenite of copper being at once precipitated.
There is immediately formed a flocculent olive-green colored precipitate of arsenite of copper, while the supernatant liquid contains free acetic acid.
The extent of the action of arsenite appears from the following results.
In general the optimum concentration of arsenite is considerably greater than that of arsenate.
An optimum concentration of arsenite exists, just as in the case of arsenate, which produces a maximum rate of fermentation.
The results obtained with arsenite are throughout very similar to those given by arsenate, but are not quite so striking.
The relative rates produced by the addition of equivalent amounts of arsenate and arsenite (1 c.
It is also possible as suggested by Buchner for the analogous case of arsenite (p.
The inhibiting effects of higher concentrations of arsenite and arsenate also present close analogies, but this most interesting aspect of the question has not yet been sufficiently examined to repay detailed discussion.
Sodium arsenite is a pronounced protoplasmic poison, which rapidly destroys the power of growth and reproduction in living cells, and was therefore applied to yeast-juice to differentiate between protoplasmic and enzymic action.
An alkaline arsenite is used for washing sheep to destroy vermin.
For cleansing metals, arsenite of soda has been used on account of its strong alkalinity.
The officinal solution of Arsenite of Potash was introduced into notice by Dr.
The Terchloride, and theArsenite of Potash, are the preparations most frequently employed.
Its composition appeared to be a strongly acidified solution of sodium arsenite and zinc sulphate.
A blue pigment, termed mineral blue, consists of about equal parts of arsenite of copper and potash, and should contain 38.
The tasteless "ague drops" used in the fen countries are simply a solution ofarsenite of potash.
The type of leaf is entirely different, and on the cabbage you are apt to burn them with the sodium arsenite while the lead arsenate will give you practically the same result.
When you use the spray it would probably be all right to use the sodium arsenite for the onion and the lead arsenate for the cabbage.
There is an objection to the use of arsenite in that sodium arsenite is a soluble poison and will burn the leaves of the cabbage.
The tip of the nose and the gills of the fish are coloured with the usual pink, while the back and sides are highly painted with that virulent poison arsenite of copper.
The cheerful green of the paper is nothing less deadly than the aceto-arsenite of copper, an irritant poison of the first class.
Chemicals used for killing trees are sodium arsenite and ammate.
They found that the poisoning of a single healthy tree with sodium arsenite often killed as many as 15 other trees nearby, indicating that their roots were connected.
Run in the arsenite solution from a burette until no further reaction takes place on the starch-iodide paper when touched by a drop of the solution of bleaching powder.
The reagent employed is sodium arsenite in the presence of sodium bicarbonate.
The sodium arsenite may be prepared from pure arsenious oxide, as described below, and is stable for considerable periods; but commercial oxide requires resublimation to remove arsenic sulphide, which may be present in small quantity.
When touched by a drop of the solution the paper turns blue until the hypochlorite has all been reduced and an excess of the arsenite has been added.
Davy states that he has obtained very satisfactory results in the estimation of ozone in the atmosphere, by employing a mixture of iodide of potassium and arsenite of potassium.
It has rather less than half the strength of the solution of arsenite of potassa, Ph.
It is injurious to wear a green dress, if the colour have been imparted to it by means of Scheele's green, which is arsenite of copper--a deadly poison.
Children's toys are frequently painted of a green colour with arsenite of copper, and are consequently, highly dangerous for him to play with.
Iron Arsenite To the Editor:--Can you inform me how iron arsenite can be prepared for subcutaneous injection?
A commercial firm furnishes physicians with ampules of arsenite of iron.
Ammonio-nitrate of silver gives a yellow precipitate (arsenite of silver).
Mittis green is an arseniate of copper; made by mixing a solution of acetate or sulphate of copper with arsenite of potash.
Scheele's green is a combination of this arsenious acid with oxide of copper, or an arsenite of copper, and is described under this metal.
Arsenite of soda and arsenite of lime are sometimes used with bordeaux mixture.
The prismatic variety of the oxide can be obtained by crystallization from a saturated boiling solution in potassium hydroxide, or by the crystallization of a solution of silver arsenite in nitric acid.
Copper arsenite (or Scheele's green) used to be much employed as a pigment for wall-papers and fabrics, and toxic effects have resulted from their use.
Like the homemade dip they all contain sodium arsenite as the active tick-killing agent.
If the liquid persistently remains muddy or milky, it may be because the operation has been conducted so fast that much water has been boiled out and sodium arsenite is beginning to crystallize, so add another gallon of water and stir.
A simple method for roughly detecting arsenite of copper in these fabrics was published in the Chemical News (vol.
In November, 1861, a young woman died in London from the poisonous effects of arsenite of copper used in dusting wax leaves.
The separation is effected by distilling the substance with solution of ferric sulphate, and collecting the vapour in a dilute solution of sulphurous acid or arsenite of soda.
When the arsenic is present as arsenite or arsenide, distillation with an acid solution of ferric chloride will give the whole of the arsenic in the distillate free from any metal except, perhaps, tin as stannic chloride.
A little starch paste is now added, and the arsenite solution cautiously introduced drop by drop, till the blue colour just disappears.
The best dung substitutes are the arsenite and arseniate of soda, the silicate of soda, and phosphate of lime.
This splendid green pigment is the aceto-arsenite of copper.
For the arsenious acid solution arsenite of soda is substituted, and for the indigo solution a colourless iodised paper, which is turned blue by the smallest quantity of free acid.
In America, we believe, the only means of destroying these insects as well as their eggs and larvae consists in the application to the plant of the highly poisonous and dangerous pigment, Scheele's green, a hydrated arsenite of copper.
This term is commonly applied to the aceto-arsenite of copper, as prepared in England.
This consists in adding iodide of potassium to the bleaching-powder liquor, acidulating the mixture with hydrochloric acid, and running the solution of arsenite of soda into it till only a yellow tint shows itself.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "arsenite" in a variety of sentences. We hope that you will now be able to make sentences using this word.
