Magnesium oxide sulphate

A proprietary tetrachromate bath has been used in Germany under the name of the D process. By the use of additions of magnesium oxide and sodium tungstate it is claimed that the current efficiency of the bath can be raised to as high as 35-40%. Other additives such as indium sulphate, sodium selenate or sodium hexavanadate enable bright deposits to be obtained. 

No. Purpose Nitrogen % Nitrodiglycol Centralite Butyl phthalate Graphite Magnesium oxide Potassium sulphate Vaseline Dimensions 1 4> 13 > o E o 13 U... 

No. Purpose Nitroce llulose c o <30 o Sh Nitrodiglycol Nitroguanidine DNT Nitronaphthalene Centralite Acardite Ethylphenylurethane Diphenylurethane Hydrocellulose Graphite Magnesium oxide Potassium sulphate Dimensions Calorific value (kcal/kg)... 

Sulphates. The solution of 0.5 gm. of magnesium oxide in 10 cc. of ueutie acid (up. gr. 1.041) should not. Ik immediately rendered turhid on the addition of barium nitrate. solution. 

Sulphates. — Dissolve 3 gm. of magnesium oxide in 20 cc. of hydrochloric acid, dilute the solution to about 100 ee., heat to boiling, and add barium chloride solution. No precipitate of barium sulphate should form within twelve hours. 

A1203 activated by heating to about 200 C in a current of air or carbon dioxide, is the most, widely used absorbent. Other adsorbents used are silica gel (activated in the same manner as alumina), magnesium oxide, magnesium carbonate, calcium carbonate, calcium sulphate, barium carbonate, charocal, sucrose, talc, starch, cellulose and Fuller s earth. The inorganic adsorbents are usually heated to 200-220 C before use. 

Botryogen contains ferrous and magnesium oxides associated with ferric sulphate, thus Fe0.Mg0.Fe2(S04)3.18H20. 

Magnesium Oxide, iVIercuric Oxide, Potassium Chlorate, Potassium Chloride, Sulphuric Acid, Hydrochloric Acid, Zinc Sulphate, Sulphur Dioxide, Carbon Dioxide. 

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