Reactivity Predictions

Once you have added two or more substances to My365betÓéÀÖ, CAMEO 365betÓéÀÖ shows pair-wise reactivity predictionsÌý³Ù³ó°ù´Ç³Ü²µ³ó:

  • The Compatibility Chart, which is a quick, visual summary of whether the chemicals might react if mixed. Text and color-coded symbols indicate which pairs are incompatible, compatible, and where caution should be used. (The cells also contain short phrases that summarize the reactive hazard predictions for each pair; a cell without any short hazard phrases means that there is no known hazardous reaction for that pair.)
  • Detailed Hazard Predictions below the chart, which explain the potential dangers of mixing those chemicals. The predictions include hazard statements, potential gas byproducts, and a documentation link for background on the predictions.

Hazard Prediction Limitations

The hazard predictions DO include:

  • Color-coded compatibility estimates
  • General statements (e.g., "Generates heat") about predicted hazards
  • Potential gas byproducts

The hazard predictions DO NOT include:

  • Estimates for other products formed in the reaction
  • Predictions about reaction rates (although information on this may be available in the background documentation)
  • Predictions of catalytic reactions
  • Reactions that involve three or more reactants (that is, CAMEO 365betÓéÀÖ will reduce the reaction to a combination of pair-wise predictions)

Viewing Reactivity Predictions

To view CAMEO 365betÓéÀÖ' predictions about potential chemical reactions between two or more substances:

  1. Add all of the substances of interest to the My365betÓéÀÖ collection by either:
    • Adding chemical datasheets.
    • Importing a previously saved My365betÓéÀÖ collection. (You can either replace the existing list with the saved version or combine the saved version with the existing list.)
    • Clicking Add Water on the My365betÓéÀÖ page. (This will allow you to see general predictions about how the chemicals would react with water. However, if a chemical is water reactive, there may be more specific information on its chemical datasheet.)
    • Clicking Add Reactive Group on the My365betÓéÀÖ page. You'll be taken to a list of reactive group datasheets; click Add to My365betÓéÀÖ from the datasheet of interest. (Because the reactivityThe tendency of a substance to undergo chemical change. The reactivity of most substances depends on the temperature and pressure of the surroundings, and on the chemicals with which it comes in contact. Under ordinary conditions, innately reactive substances are those that react rapidly with water, air, and other common components of the environment, as well as substances that self-react (decompose or polymerize). predictions are based on reactive groupsReactive groups are categories of chemicals that typically react in similar ways because they are similar in their chemical structure. For purposes of predicting reactivity between mixed chemicals, each substance in CAMEO 365betÓéÀÖ has been assigned to one or more reactive groups, based on the known chemistry of that substance., you can add reactive group datasheets to the collection if you can't find a particular chemical in the database and you know that is should belong to one or more reactive groups.)
  2. In the sidebar, click Predict Reactivity. The reactivity report will display with the Compatibility Chart at the top of the page and detailed hazard predictions for each pair of substances below the chart (as shown in the picture below).
  3. Return to My365betÓéÀÖ to add or remove substances from the collection, then click Predict Reactivity again to see updated predictions.
Note: Some chemicals pose especially serious reactivity hazards, whether or not they are mixed with other chemicals. CAMEO 365betÓéÀÖ alerts you to these hazards with special reactivity alerts on the chemical datasheet.

Working with the Compatibility Chart

The Compatibility Chart provides an overview of CAMEO 365betÓéÀÖ' predictions for reactivity between all possible pairs of substances in the My365betÓéÀÖ Collection. The names of the substances in the collection are listed down the left side and along the diagonal of the chart.

To find out how a pair of chemicals might react, find the intersecting cell:

  • If the cell is labeled Incompatible and has a red square icon (On the Compatibility Chart, a red square icon indicates incompatible.), it means that hazardous reactivity issues are expected and likely to occur.
  • If the cell is labeled Caution and has a yellow square icon (On the Compatibility Chart, a yellow square icon indicates caution.), it means that hazardous reactivity issues could occur under certain conditions.
  • If the cell is labeled Compatible and has a green square icon (On the Compatibility Chart, a green square icon indicates compatible.), it means that hazardous reactivity issues are not expected or are unlikely to occur.

For instance, in the picture below, the highlighted cell is the intersection of the Gasoline line and the Chlorine column, and it shows that those substances are predicted to be incompatible. The intersecting cell summarizes the reactivity predictions for that pair of substances; click on the cell to see more detailed predictions for the pair. (You can also scroll down the Chemical Reactivity page to see detailed reactivity information for all the pairs in the chart.)

At top, a sample Compatibility Chart showing pair-wise reactions for a mixture of sulfuric acid, chlorine, acetone, water, and gasoline. At bottom, more detailed predictions for gasoline mixed with chlorine.

How do I...?