FREQUENTLY ASKED QUESTIONSPUBLIC DOCUMENT · SDSHQ-WEB-006 · EFFECTIVE 2026

Questions, answered.

The short version of what people ask us most — about the free library, the plans, and what the authoring engine will and won't claim. Anything else, write to us.

The library & viewers

Q-01Is hosting really free?

Yes. The Free plan stores up to 200 SDSs with unlimited viewers and a distribution portal — free forever. When paid plans open, Starter ($15/mo) removes the storage cap.

Q-02Who counts as a viewer?

Anyone who just reads a sheet, scans a QR code, or reprints a label. Viewers are free and unlimited on every plan — you only ever pay for locations and authoring seats.

Q-03Do workers need an account to read a sheet?

No. Scanning a container QR code or opening your portal link goes straight to the current sheet — no login, no seat, no app.

Q-04Can we bring the SDS library we already have?

Yes. The library hosts the sheets you already have from your suppliers — authoring is only for sheets you create yourself.

Plans & billing

Q-05When do paid plans open?

Soon. Hosting and reading are free today; join the waitlist and we'll email you the moment paid plans are available.

Q-06What does annual billing save?

Two months — annual plans are priced at ten months (e.g. Starter is $15/mo or $150/yr).

Q-07Can we author one SDS without subscribing?

Yes — one-off SDS authoring is $49 per SDS, no subscription required.

Q-08What if we have more than 5 locations?

Multi-Site and Author Plus include 5 locations (+$10/site each beyond that). Past that, Enterprise offers unlimited locations at a per-site rate, plus SSO, an SLA, API access, and dedicated onboarding — contact us.

Authoring & compliance

Q-09What standard are authored sheets built to?

The U.S. OSHA Hazard Communication Standard (29 CFR 1910.1200) as updated by the May 2024 final rule. We do not currently produce SDSs valid in the EU, UK, Canada, or other GHS jurisdictions — details in the methodology.

Q-10How are mixtures classified?

From first principles under the GHS rule set adopted by HCS 2024 — ATE additivity, concentration cutoffs and SCLs, and the summation method — with an audit-trail calculation string on every result. The methodology covers each endpoint.

Q-11What happens when the rules change?

Every classification is stamped with the engine version that produced it. Published sheets are re-checked against the current engine and flagged if a newer rule set would change the result.

Q-12Can we export our sheets?

The Author Plus plan includes PDF + Word export and version history, so every sheet you publish is yours to file, print, and archive.

Didn't find it?

Send us the question — it lands with a person, not a ticket queue.