Add to MyChemicals Print Friendly Page
Reactive Group Datasheet


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 about reactivity predictions...

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 35 chemical datasheets assigned to this reactive group.


Except for acetic anhydride, these materials are not flammable but are combustible. The products of combustion are noxious.
Compounds from this group are incompatible with aqueous acids, strong oxidizing agents, alcohols, amines, and bases. Organic anhydrides react exothermically with water. The reactions are sometimes slow due to limited miscibility, but can become violent when local heating and/or increased miscibility during the reaction accelerates the rate of reaction. The rate of reaction with water is also accelerated by acids.
Extremely corrosive and irritating to mucous membranes, eyes, respiratory tract. Burns the skin. Fumes are a serious inhalation hazard.
Other Characteristics
These substances are formed by the condensation reaction of two molecules of an organic acid with the loss of water. They have the form R1(CO)O(CO)R2, where R1 and R2 may be any of a number of different organic compounds. Compounds in this group are used in organic synthesis and as dehydrating agents in nitration, sulfonation, and other reactions.
Acetic anhydride, butyric anhydride, isobutyric anhydride, maleic anhydride, methacrylic anhydride, phthalic anhydride, propionic anhydride.

Reactivity Documentation

Use the links below to find out how this reactive group interacts with any of the reactive groups in the database.

The predicted hazards and gas byproducts for each reactive group pair will be displayed, as well as documentation and references that were used to make the reactivity predictions.

Mix Anhydrides with: