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Terms of Service

Last updated: April 2026

Acceptance of Terms

By accessing and using Quemist (quemist.com), you agree to be bound by these terms of service. If you do not agree to these terms, please do not use this website.

Educational Purpose Only

Quemist is provided strictly for educational and informational purposes. The calculators, reference data, and other content on this site are intended to support learning and general chemistry reference. They are not intended to be used as the sole basis for any decision in laboratory, industrial, clinical, medical, or safety-critical settings.

Users must independently verify all calculations and data before relying on them for any purpose where inaccurate results could lead to harm, injury, property damage, or financial loss. This includes but is not limited to: laboratory procedures, chemical handling, industrial processes, medical or pharmaceutical applications, and regulatory compliance.

No Professional Advice

Nothing on Quemist constitutes professional chemical, medical, safety, or engineering advice. The site does not replace consultation with qualified professionals such as chemists, physicians, safety officers, or engineers. If you need professional guidance, consult an appropriately qualified expert.

Toxic Substance Emergencies

If you or someone else has been exposed to a toxic chemical described on this site, do not rely on Quemist for treatment guidance. Call Poison Control immediately (U.S.: 1-800-222-1222; international: contact your national poison control center) or call emergency services (911 in the U.S.). Any safety information, antidote references, or hazard classifications on this site are provided as general chemistry reference only and are not a substitute for professional medical treatment or emergency response.

Radioactive and Controlled Materials

Some compound reference pages on this site describe radioactive materials and materials subject to nuclear regulatory control, including materials under the jurisdiction of the U.S. Nuclear Regulatory Commission (NRC), the U.S. Department of Energy (DOE), the International Atomic Energy Agency (IAEA), and U.S. export control regulations (ITAR/EAR). Possession, handling, transport, and transfer of these materials require federal licenses and permits that are not obtained through, and not implied by, accessing information on this site. Do not attempt to acquire, handle, synthesize, or experiment with radioactive materials, fissile materials, or other regulated substances based on information found on Quemist. Historical and structural information provided on these pages is drawn from open scientific literature and is presented for educational reference only.

Disclaimer of Warranties

Quemist is provided on an "as is" and "as available" basis without warranties of any kind, either express or implied. To the maximum extent permitted by applicable law, we disclaim all warranties, including but not limited to implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement.

While we endeavor to keep calculations and reference data accurate and up to date, we do not warrant that the information on this site is complete, accurate, reliable, current, or error-free. Chemical data, conversion factors, and calculation results may contain errors or become outdated.

Limitation of Liability

To the maximum extent permitted by applicable law, Quemist and its creators, operators, and contributors shall not be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising out of or relating to your use of, or inability to use, this website. This includes but is not limited to damages arising from:

  • Errors or inaccuracies in calculations or reference data
  • Reliance on any information provided on the site
  • Interruption or unavailability of the site
  • Any actions taken based on content from this site

This limitation applies regardless of the theory of liability (contract, tort, strict liability, or otherwise), even if we have been advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of certain damages, so the above limitations may not apply to you in full. In such cases, our liability shall be limited to the maximum extent permitted by applicable law.

User Responsibilities

You are solely responsible for:

  • Verifying the accuracy of any calculations or data obtained from Quemist before acting on them
  • Using appropriate safety precautions when working with chemicals, regardless of information found on this site
  • Complying with all applicable laws, regulations, and safety standards in your jurisdiction
  • Ensuring that your use of this site complies with these terms

Intellectual Property

The content, design, and code of Quemist are protected by copyright and other intellectual property laws. You may use the tools and reference data for personal and educational purposes. Systematic scraping, reproduction, or redistribution of site content without permission is prohibited.

Third-Party Services

Quemist uses third-party services including Google Analytics (for site usage analytics) and Google AdSense (for advertising). Your use of Quemist is also subject to the terms and privacy policies of these third-party services. Please see our Privacy Policy for details on how these services may collect and use data.

Changes to Terms

We reserve the right to update these terms at any time. Material changes will be indicated by updating the "Last updated" date at the top of this page. Your continued use of the site after changes are posted constitutes your acceptance of the revised terms. We encourage you to review these terms periodically.

Indemnification

You agree to indemnify and hold harmless Quemist and its creators, operators, and contributors from any claims, damages, losses, liabilities, costs, or expenses (including reasonable attorneys' fees) arising out of or related to your use of this website, your violation of these terms, or your reliance on any information provided on this site.

Governing Law

These terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of law provisions. Any disputes arising under or in connection with these terms shall be subject to the exclusive jurisdiction of the courts located in Delaware. If any legal action is brought to enforce these terms, the prevailing party shall be entitled to recover reasonable attorneys' fees and costs.

Severability

If any provision of these terms is found to be unenforceable or invalid by a court of competent jurisdiction, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall continue in full force and effect.

Contact

For questions about these terms, please contact us at contact@quemist.com.