hydroxid

The acidity is determined by weighing 20 grams of flour into a flask, adding 200 cubic centimeters of distilled water, shaking vigorously, and leaving the flour in contact with the water for an hour; 50 cubic centimeters of the filtered solution are then titrated with a tenth normal solution of potassium hydroxid.

Human Foods and Their Nutritive Value Harry Snyder

-- If a brown sediment is formed in water exposed to the air for some time, it is probably iron hydroxid.

Human Foods and Their Nutritive Value Harry Snyder

Cool, nearly neutralize with sodium hydroxid solution, and make up to 500 cc.

All About Coffee 1909

Prepare solutions of sulphuric acid and sodium hydroxid of exactly

All About Coffee 1909

Several processes employ an alkali, such as ammonium hydroxid, to free the caffein from the acid; or an acid, such as acetic, hydrochloric, or sulphurous, is used to form a more soluble salt of caffein.

All About Coffee 1909

Treat a 10-gram sample with 10 grams of 10-percent ammonium hydroxid and 200 grams of chloroform in a glass-stoppered bottle and shake continuously by machine or hand for one-half hour.

All About Coffee 1909

Wash the potassium hydroxid with 2 portions of chloroform of 10 cc. each, adding them to the flask together with the chloroform washings of the filter paper.

All About Coffee 1909

Filter through linen, and wash with boiling water until the washings are no longer acid; rinse the substance back into the flask with 200 cc. of the boiling 1. 25-percent solution of sodium hydroxid free, or nearly so, of sodium carbonate; boil at once and continue boiling gently for thirty minutes in the same manner as directed above for the treatment with acid.

All About Coffee 1909

"It may be well to keep in mind that when the druggist says potash he means potassium hydroxid, KOH, a compound of potassium, hydrogen, and oxygen, as the name indicates."

The Story of the Soil; from the Basis of Absolute Science and Real Life, 1892

a separatory funnel with 5 cc. of 1-percent potassium hydroxid solution.

All About Coffee 1909