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Updated: June 1, 2025
Common white wax is best, as most chemicals act less upon it. When bottles containing bromine are to be sealed, it is well to grease the stopper. This, however, only when the bottle is in frequent use, for if it were to be sent by any conveyance it would be likely to fly out. Rouge. The method employed by Lord Ross is probably unsurpassed in the production of rouge.
Iodine was discovered in 1811, bromine in 1826, chloroform in 1831, gun-cotton, from which collodion is made, in 1846, the electro-plating process about the same time with photography; "all things, great and small, working together to produce what seemed at first as delightful, but as fabulous, as Aladdin's ring, which is now as little suggestive of surprise as our daily bread."
Again, should the impressioned plate be exposed too long over the vapor of bromine, the impression would be rendered wholly insensitive to the mercurial vapor.
=Irritant Gases= are Nitrous acid gas; sulphurous acid gas; hydrochloric acid gas; chlorine; bromine; ammonia. They have the common property of causing irritation and inflammation of the eyes, throat, and air-passages, and may cause spasm of the glottis, bronchitis, and pneumonia. =Sulphurous Acid Gas.= One of the products of combustion of common coal.
This reaction between iodine and sodium thiosulphate, resulting in the formation of the compound Na S O , called sodium tetrathionate, is quantitatively exact, and differs in that respect from the action of chlorine or bromine, which oxidize the thiosulphate, but not quantitatively.
It is insoluble in nitric acid, but readily soluble in ammonia; it fuses without decomposition, forming, when cold, a tough, horny mass, and is reduced by hydrogen and by fusion with carbonate of soda, or with resin. Chloride of Bromine. Chloride of Iodine. Dissolve half an ounce of carbonate of potassa in water, and neutralize with muriatic acid.
Although he at once put his hand into water, wherever the bromine had touched it a blister was formed in a few seconds a blister which one could not better describe than by saying, "the skin puffed up." I need not say that Léonie had not left my house, nor seen anyone from my laboratory. Of this I am absolutely certain, and I am certain that I had not mentioned the incident of the burn to anyone.
Wolcott was desirous to be enabled to further shorten the time for a sitting, and having some knowledge of bromine and its action, by request, Dr. Chilton prepared a small quantity; but Mr. Wolcott did not succeed very well with it, he having invariably used too much in combination with iodine to produce that sensitive coating now well known to the profession. Professor Morse, of this city, Dr.
This mixture is particularly adapted for hot climates, and is used in this country by some few who regard its use as a valuable secret. Bromide of Starch. This preparation is much used, but not alone. It is combined with lime by putting about one part in measure of starch to four of lime. It is prepared by adding bromine to finely pulverized starch, in the same manner as bromide of lime.
Experience proves that the common impressions, iodized to a rather light yellow gold tint, and brought by the bromine to a very light, rose color, have their whites very intense, and their deep shades very black.
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