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 info@sdshq.com.
Yes. The Free plan stores up to 200 SDSs with unlimited viewers and no-login share links — free forever. Starter ($19/mo) removes the storage cap.
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.
No. Scanning a container QR code or opening a sheet's share link goes straight to the current sheet — no login, no seat, no app.
Yes. The library hosts the sheets you already have from your suppliers — authoring is only for sheets you create yourself.
Not on its own. When a supplier sends a revised sheet, you upload it — or use Replace PDF on the old one — and SDS HQ files it and keeps the earlier file on record. Each sheet shows its printed revision date and how old it is, so stale ones are easy to spot. What it doesn't do yet: fetch sheets from suppliers or a public database for you, or watch suppliers for new revisions.
They're open now. Hosting and reading stay free forever; paid plans are available today on the pricing page, with checkout handled by Paddle.
Two months — annual plans are priced at ten months (e.g. Starter is $19/mo or $190/yr).
Yes — SDS authoring is $79 per SDS, no subscription required, on every plan including Free. Updates are included: republishing a sheet you bought never costs a second purchase. Authoring constantly? Contact us about volume authoring.
Multi-Site includes 5 locations (+$10/site each beyond that). Running many sites? Contact us and we'll arrange a per-site rate.
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.
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.
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.
Yes — every SDS you purchase and publish includes PDF + Word export and version history, so the sheet is yours to file, print, and archive.
Yes — the SDS replaced the MSDS (material safety data sheet) when OSHA aligned HazCom with the GHS in 2012, and every SDS now follows the same 16-section order. If your MSDS binder still holds old-format sheets for products you use, ask the supplier for the current SDS. More in SDS binder vs. digital.
Send us the question — it lands with a person, not a ticket queue.