sulfid

A sulfid is a combination of sulfur with a metal or other body.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

The test is based upon the principle that when zinc sulfid comes in contact with the acid, hydrogen sulfid gas is formed, and when this gas comes in contact with lead acetate, lead sulfid, a black chemical, is formed.

Right Use of Lime in Soil Improvement Alva Agee 1900

If the soil contains acid, a chemical reaction occurs between it and zinc sulfid, and hydrogen sulfid gas is liberated.

Right Use of Lime in Soil Improvement Alva Agee 1900

The method of making this test is simple, and consists in placing a measured quantity of soil in a flask, to which is added a solution composed of 20\% calcium chlorid and 2\% zinc sulfid.

Right Use of Lime in Soil Improvement Alva Agee 1900

Yellow precipitates are formed by hydrogen sulfid and ammonium sulfid in stannic solutions.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

A tin solution acted on by sulfuretted hydrogen (H_ S) produces a dark-brown precipitate (SnS), stannous salt, which is soluble in ammonium sulfid (NH_ ) _ S_ ; this being precipitated, gives (SnS_ ) stannic salt, which is yellow.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

Brown precipitates are formed by both hydrogen sulfid and ammonium sulfid, in stannous solutions.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

Where there is considerable decomposition of food which produces sulfuretted hydrogen, the sulfid of tin may be formed on and around the fillings; it is of a yellowish or brownish color, and as an antiseptic is in such cases desirable.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

To offset the discoloration, we find that the sulfid is insoluble, and fills the ends of the tubuli, thus lending its aid in preventing further caries.

Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883