Chemical Database v1

Free and open-source database of chemical elements, nuclides, compounds, and more.
Visit: https://pse-info.de.

Openly accessible data source. Support is appreciated.
Attribution when reusing helps raise visibility of the project.

Project structure

• /data/

Where all actual data will be stored, easy to bundle and make path resolving for any basic API

• /automation-src/

Automation code in typescript, to help building, serving, checking, bundling... the database.

Run automation scripts

This project is running automation scripts using the Bun javascript runtime. Which you will need to install to run the automation (not to access data).

Commands:

# First step
# like npm install, to install all dependencies in node_modules/
bun install
# Then commands available
# Generate JSON schemas from typescript types
bun generate-schemas # or bun run generate-schemas
# Verify the data 
bun verify-data

CDN

Fetch data via open CDN:

https://cdn.jsdelivr.net/gh/pseinfo/database/{REQUEST}

Example requests:

https://cdn.jsdelivr.net/gh/pseinfo/database/elements/h/chemical.json
https://cdn.jsdelivr.net/gh/pseinfo/database/elements/fe/atomic.json
https://cdn.jsdelivr.net/gh/pseinfo/database/elements/au/physical.json

License

© Copyright 2025 pse-info.de under the MIT license.