Caustic Arsenic Chloride

Chemical Designations - Synonyms Arsenic (iii) Trichloride Arsenic Chloride Arsenous Chloride Butter of Arsenic Caustic Arsenic Chloride Caustic Oil of Arsenic Fuming Liquid Arsenic Chemical Formula AsClj. 

Caustic Arsenic Chloride Caustic Oil of Arsenic Caustic Potash Caustic Potash Solution Caustic Soda Caustic Soda Solution CD-68 Cellosolve Cellosolve Acetate... 

Arsenic butter Arsenic chloride Arsenic chloride (AsCIa) Arsenic trichloride Arsenic(lll) chloride Arsenio(lll) trichloride Arsenious chloride Arsenous chloride Arsenous trichloride Butter of arsenic Caustic arsenic chloride Caustic oil of arsenic Chlorure arsenieux Chlorure d arsenic EINECS 232-069-5 Fuming liquid arsenic HSDB 422 Trichloroarsine Trichlorure d arsenic UN1560. Intermediate for organic arsenicals (pharmaceuticals, insecticides), ceramics. Liquid mp = -9" bp = 130.21" d = 2.1497 nS =1.6006 reacts with H2O, soluble in organic solvents. Atomergic Chemetals Noah Chem. 

When heated in air at 800°C AS4S4 vapors begin to dissociate to AS2S2 which then ignites to form arsenic oxides. Ignition in chlorine produces arsenic chloride. Reaction with fluorine forms arsenic trifluoride. It is stable in water and also in the air at ambient temperatures. It does not react with hot concentrated HCl but is decomposed by nitric acid. It forms thioarsenite ion, AsS3 and elemental arsenic when warmed with caustic soda solution. Similar reaction occurs with sodium sulfide. 

Arsenic (orpiment) is a mineral composed of much sulphur and a caustic salt regulus of arsenic (elementary arsenic) is made by heating white arsenic with salt of tartar and soap, and a corrosive oil of arsenic (the chloride) by distilling arsenic (sulphide ) with corrosive sublimate. Caustic arsenic (potassium arsenate) is made by deflagrating a mixture of arsenic (sulphide), sulphur, and saltpetre in an iron mortar by touching it with a red-hot iron, then calcining in a crucible. ... 

Chemical precipitation is used in porcelain enameling to precipitate dissolved metals and phosphates. Chemical precipitation can be utilized to permit removal of metal ions such as iron, lead, tin, copper, zinc, cadmium, aluminum, mercury, manganese, cobalt, antimony, arsenic, beryllium, molybdenum, and trivalent chromium. Removal efficiency can approach 100% for the reduction of heavy metal ions. Porcelain enameling plants commonly use lime, caustic, and carbonate for chemical precipitation and pH adjustment. Coagulants used in the industry include alum, ferric chloride, ferric sulfate, and polymers.10-12... 

The first step of the process is performed in a separate, dedicated building. The drums of arsenic trioxide are opened in an air-evacuated chamber and automatically dumped into 50% caustic soda. A dust collection system is used. The drums are carefully washed with water, the washwater is added to the reaction mixture, and the dmms are crushed and sold as scrap metal. The intermediate sodium arsenite is obtained as a 25% solution and is stored in large tanks prior to further reaction. In the next step, the 25% sodium arsenite is treated with methyl chloride to produce the disodium salt DSMA (disodium methanearsenate, hexahydrate). This DSMA can be sold as a herbicide however, it is more generally converted to MSMA, which has more favorable application properties [8]. 

The purification of the alkali hydroxides.—Numerous impurities have been reported in commercial sodium and potassium hydroxides. Several have commented on the presence of peroxide, particularly in caustic potash.19 Various salts—carbonate, sulphate, nitrate, nitrite, chloride, and phosphate—as well as alumina, silica, organic matters, and metal oxides—e.g. arsenic, vanadium, iron, etc., have been reported. More or less of the other alkalies may also be present. 

The reduction of arsenic compounds to arsine by nascent hydrogen may also be effected in alkaline medium thus in the presence of caustic alkali with zinc,10 aluminium11 or sodium amalgam,12 and also in ammonia or ammonium chloride with zinc.13... 

Drum dryers potatoes, cereals, buttermilk, skim milk, dextrins, yeasts, instant oat meal, polyacylamides, sodium benzoate, propionates, acetates, phosphates, chelates, aluminum oxide, m-disulfuric acid, barium sulfate, calcium acetate-arsenate-carbonate-hydrate-phosphate, caustic, ferrous sulfate, glue, lead arsenate, sodium benzene sulfonate, and sodium chloride... 

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