Reactive Group Datasheet

Sulfides, Inorganic

What are reactive groups?

Reactive groups are categories of chemicals that typically react in similar ways because they are similar in their chemical structure. Each substance with a chemical datasheet has been assigned to one or more reactive groups, and CAMEO Chemicals uses the reactive group assignments to make its reactivity predictions. More Info...

If you can't find a chemical in the database--but you know what reactive group it belongs in--you can add the reactive group to MyChemicals instead in order to see the reactivity predictions.

There are 37 chemical datasheets assigned to this reactive group.

Description

Flammability

The only highly flammable member of this group is hydrogen sulfide. It poses a particular danger because of its relatively wide flammability limits. However, some other inorganic sulfides can heat spontaneously and even ignite if exposed to moisture.

Reactivity

Materials in this group are generally basic and therefore incompatible with acids. Many of these compounds are reducing agents and therefore react vigorously with oxidizing agents, including inorganic oxoacids, organic peroxides and epoxides. Simple salts of sulfides (such as sodium, potassium, and ammonium sulfide) react vigorously with acids to release hydrogen sulfide gas.

Toxicity

Many of the members of this group behave as strong bases. Therefore, direct dermal exposure by these materials may cause severe burns. However, numerous inorganic sulfides are so insoluble (for example, mercury(II) sulfide and cadmium sulfide) that they are not caustic. This property depends upon solubility. Hydrogen sulfide is a toxic gas that irritates the eyes and mucous membranes at concentrations of around 50 ppm (sensitivity varies considerably from person to person). Most of the symptoms of hydrogen sulfide poisoning are reversible if the victim is quickly exposed to fresh air. The gas causes death at concentrations of around 1,000 ppm.

Other Characteristics

Compounds in this group tend to have very unpleasant odors.

Examples

Ammonium hydrosulfide, sodium hydrosulfide, ammonium sulfide, antimony sulfide, arsenic sulfide, arsenic trisulfide, lead sulfide, hydrogen sulfide, mercuric sulfide, phosphorus heptasulfide, potassium hydrosulfite, potassium sulfide, selenium disulfide, sodium sulfide.

Reactivity Documentation

Click on the links below to see how this reactive group is predicted to react when it is mixed with one of the 47 reactive groups. A variety of documentation about that reactive group pair will be displayed, including predicted hazards, predicted gas byproducts, and background materials and references used to make the predictions.

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Sulfides, Inorganic

What are reactive groups?

Description

Reactivity Documentation