Disclaimer

Educational Use Only

All calculators, converters, reference tables, and element/compound data on Quemist are provided strictly for learning and general-reference purposes. The site is intended to support students, educators, and anyone studying chemistry. It is not intended for, and must not be used as the sole basis for:

• Laboratory procedures, reagent preparation, or solution dilution
• Industrial chemical processes, batch calculations, or quality control
• Medical, pharmaceutical, or clinical dosing
• Environmental compliance, waste handling, or regulatory reporting
• Chemical safety assessments, SDS interpretation, or hazard classification
• Any decision where an incorrect result could cause injury, property damage, environmental harm, or financial loss

Chemical Safety Warning

Many chemicals described on this site are toxic, corrosive, flammable, explosive, reactive, or otherwise hazardous. Information about uses or properties does not constitute permission or guidance to handle a substance. Before working with any chemical:

• Consult the manufacturer's Safety Data Sheet (SDS) for that specific substance.
• Follow all applicable laws, institutional protocols, and safety procedures.
• Work under qualified supervision and with appropriate personal protective equipment.
• Verify chemical compatibilities and reaction conditions independently.

Quemist does not provide SDS data, hazard ratings, transport classifications, or regulatory limits. Always defer to authoritative sources (NIOSH, OSHA, ECHA, local regulatory bodies) for safety-critical information.

Accuracy of Calculations and Data

While we cross-reference values against IUPAC standard atomic weights, NIST reference data, and standard chemistry textbooks, we make no guarantee that any calculation or published value is free of error. Numerical results should be treated as approximations. Significant figures, rounding behavior, and conventional values may differ from those expected by your instructor, journal, or regulator.

Users are solely responsible for independently verifying any value before use. If you discover an error, please report it via the contact page so we can investigate.

No Professional Relationship

Using Quemist does not create a teacher–student, client–consultant, or professional advisory relationship between you and the site's operators. No content on this site should be construed as a substitute for consultation with a qualified chemist, medical professional, pharmacist, engineer, safety officer, or regulatory expert.

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To the maximum extent permitted by applicable law, Quemist, its creators, operators, and contributors are not liable for any loss, injury, damage, or consequence arising from use of — or inability to use — this site, including but not limited to any action taken or not taken based on information obtained here. Full liability terms are set out in our Terms of Service.

Changes to This Disclaimer

This disclaimer may be updated at any time without prior notice. The "Last updated" date at the top of this page reflects the most recent revision. Continued use of the site after changes constitutes acceptance of the updated disclaimer.

Contact

For questions about this disclaimer, reach out via the contact page.