Compatibility (chemical)

Short description: How stable a substance is when mixed with another substance

Chemical compatibility is a rough measure of how stable a substance is when mixed with another substance.[1] If two substances can mix together and not undergo a chemical reaction, they are considered compatible. Incompatible chemicals react with each other, and can cause corrosion, mechanical weakening, evolution of gas, fire, or other undesirable interactions.

Chemical compatibility is important when choosing materials for chemical storage or reactions, so that the vessel and other apparatus will not be damaged by its contents. For purposes of chemical storage, chemicals that are incompatible should not be stored together, so that any leak will not cause an even more dangerous situation from chemical reactions. In addition, chemical compatibility refers to the container material being acceptable to store the chemical or for a tool or object that comes in contact with a chemical to not degrade. For example, when stirring a chemical, the stirrer must be stable in the chemical that is being stirred.

Many companies publish chemical resistance charts.[2] and databases[3] to help chemical users use appropriate materials for handling chemicals. Such charts are particularly important for polymers[4] as they are often not compatible with common chemical reagents; this may even depend on how the polymers have been processed.[5] For example, 3-D printing polymer tools used for chemical experiments must be chosen to ensure chemical compatibility with care.[6]

Chemical compatibility is also important when choosing among different chemicals that have similar purposes. For example, bleach and ammonia, both commonly used as cleaners, can undergo a dangerous chemical reaction when combined with each other, producing poisonous fumes. Even though each of them has a similar use, care must be taken not to allow these chemicals to mix.

## References

1. ↑ Chemical compatibility chart safe/unsafe combinations
2. ↑ "Chemical Compatibility". http://spectrumlabs.com/dialysis/Compatibility.html.
3. ↑ "Chemical Compatibility Database from Cole-Parmer". https://www.coleparmer.com/Chemical-Resistance.
4. ↑ "Plastics Chemical Resistance Chart | Plastics International". http://www.plasticsintl.com/plastics_chemical_resistence_chart.html.
5. ↑ Heikkinen, Ismo T.S.; Kauppinen, Christoffer; Liu, Zhengjun; Asikainen, Sanja M.; Spoljaric, Steven; Seppälä, Jukka V.; Savin, Hele (October 2018). "Chemical compatibility of fused filament fabrication-based 3-D printed components with solutions commonly used in semiconductor wet processing". Additive Manufacturing 23: 99–107. doi:10.1016/j.addma.2018.07.015. ISSN 2214-8604. https://hal.archives-ouvertes.fr/hal-02111366/file/Chemical_Compatibility_of_Fused_Filament.pdf.
6. ↑ "Experiment Tests the Suitability of 3D Printing Materials for Creating Lab Equipment | 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing". 2018-08-03. https://3dprint.com/221403/3d-printing-materials-lab/.

## External links

* Chemical compatibility database

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