How to Tell a Real Supplier SDS From a Fake One

You ask a supplier for an SDS, and what lands in your inbox is a PDF that looks fine at a glance but feels slightly off. Maybe the composition section reads like it was written for a different grade of the material. Maybe the formatting looks like it was copied from a generic template site rather than issued by the actual manufacturer. Trusting a document you can't verify is a real risk to your ingredient records, since everything downstream, your INCI mapping, your CAS number, your concentration data, depends on that SDS being accurate for the actual material you're buying.

Red flag: generic or templated composition sections

A legitimate SDS for a specific raw material should describe that material's actual composition in Section 3, ideally with the correct INCI name and, where one exists, a CAS number specific to that substance. A red flag is a composition section that reads suspiciously generic, vague language, no specific CAS number where one should reasonably exist, or wording that seems lifted from a boilerplate template rather than written for the actual product. Some legitimate botanical extracts genuinely don't have a CAS number, so a missing number isn't automatically fake, but combined with other vague language it's worth a second look.

Red flag: mismatched grade or product name

Check that the SDS is actually for the grade and form you're buying. A cosmetic-grade ingredient and an industrial or food-grade version of the same base substance can have different SDS documents, even under a similar or identical name. If your invoice says "cosmetic grade, cold pressed" and the SDS you received describes a general industrial version with no mention of cosmetic use, that's worth flagging with the supplier before you rely on it for your filing.

Red flag: no issuing company information or outdated formatting

A real SDS identifies the manufacturer or the responsible supplying company, usually in Section 1. If that section is blank, generic, or clearly doesn't match who you're actually buying from, that's a sign the document may have been pulled from somewhere else entirely rather than issued specifically by your supplier. Similarly, an SDS format that looks noticeably outdated compared to the standard 16-section structure, missing several sections entirely, is worth questioning rather than filing as-is.

Red flag: the document was clearly altered

Sometimes a supplier or a middleman forwards a document with a section removed, a name swapped, or numbers that look edited. Signs include inconsistent fonts or formatting within the same document, page breaks that land in strange places, or a composition value that doesn't match what's on the accompanying CoA for the same batch. When something looks edited rather than issued, it's reasonable to go back to the source and ask for the original.

A practical checklist before you trust a document

Check	What to look for
Company info	Section 1 clearly names the actual manufacturer or supplier you're buying from
Composition detail	Section 3 gives a specific INCI name, and a CAS number where one should exist
Grade match	The SDS describes the same grade and form stated on your invoice or spec sheet
Formatting consistency	No obvious font changes, inconsistent page breaks, or signs of editing
Structure	Follows the standard 16-section format rather than a stripped-down or generic layout
Cross-check with CoA	Composition and identity details align with the batch-specific CoA for the same shipment

Why this actually matters for your filing

Everything you declare on a cosmetic notification, the INCI name, the concentration, ultimately traces back to documentation like this. If the SDS you're working from is generic, mismatched, or altered, and you file based on it, you could end up declaring an INCI name or concentration range that doesn't actually match what's in your product. That's not a paperwork inconvenience, it's the exact kind of error a notification system depends on you not making, since Health Canada and similar regulators are trusting your filing to reflect reality rather than verifying every ingredient themselves.

What to do when something looks off

The straightforward move is going back to the supplier and asking for the original document directly from the manufacturer, rather than accepting a forwarded or repackaged version from a distributor several steps removed. If a supplier can't produce a clean, specific SDS for the exact material and grade you're buying, that's useful information about the supplier, not just about the document.

When you're working through a formula with ingredients from several suppliers and want a second check on whether your INCI and CAS mapping actually lines up with what you've been given, that verification step is part of what Cosmetic Comply does when it screens your ingredient list, flagging anything that looks incomplete or inconsistent before it becomes part of a live filing.