New Pricing Coming May 2021

Preview new subscription levels below

We are implementing a new pricing model that gives a broader variety of subscription options. The new Pharos’ membership model will provide options for annual, monthly, weekly, and daily subscriptions.

We are reaching out to current users with instructions for choosing a new subscription model. If you start an annual Professional subscription today, your rate will stay the same for a year. If you start a free membership today, you will have limited access beginning in May (until you select a paid subscription).

Once launched, members without a paid subscription will only have access to the Pharos Discussion Board and limited building product content information under Common Products.

Best value!
Price per user for a 365-day subscription. Make Pharos' chemical data an integral part of your ongoing research or chemicals management program.
Price per user for a 31-day subscription. Take your time leveraging Pharos’ invaluable tools for a longer or more complex project.
Price per user for a 7-day subscription. Perfect for short-term projects or if you need occasional or irregular access.
Price per user for a 24-hour subscription. Get a taste of all Pharos has to offer for a low introductory price!
Pharos Access Scholarships
Scholarships are available for students or other qualifying individuals with financial hardship who meet certain criteria and are willing to share the results of their project with us. Email for more information.

The Pharos library contains human and environmental health information from 47 authoritative scientific lists for human and environmental health hazards and 32 restricted substance lists as well as more than:

All paid subscriptions include full access to:

  • Hazard, exposure, and function data for 136,444 chemicals (sample)
  • Up to 50 chemical comparisons (sample)
  • Access to Discussion forums
  • C2C List Hazards
  • Email Notifications on Hazard Updates
  • Download hazards of a chemical (sample)
  • Download chemicals in a compound group (sample)
  • Download chemicals in a hazard list (sample)
  • Access to Common Products (including All Contents)

Contact us to learn about API integrations and custom data downloads, or visit our Data Services page.

"Pharos is the first resource I consult in designing products."

Danielle Cresswell, Senior Sustainability Manager for Klean Kanteen (Read case study)

"I use Pharos in the classroom to teach practical toxicology. [...] By the time they graduate and enter the workforce, my students are well-equipped to solve such environmental health challenges."

Discounts Available
Nonprofit, Academic, and Government Users

Nonprofit, academic, and government users qualify for a 30% discount on annual subscriptions. Contact us to request a discount code.

Multiple Users

Purchase multiple subscriptions for the same organization and receive up to a 35% discount per user on annual subscriptions.


If you are unable to afford a subscription plan, contact us to discuss possible scholarship opportunities.