This is what a buyer checks before they shortlist a chemicals and materials supplier.
What does a chemical buyer check before asking you for a sample?
They confirm the substance is the one they need, that you make it rather than resell it, and that the paperwork will clear their site and their customs. In practice that means a CAS number, a grade and specification, a technical and safety data sheet, and a clear statement of your manufacturing role.
A procurement engineer has your name from a trade show badge and thirty seconds on your product page before deciding whether to open a second tab.
Reviewed 4 August 2026 · Written for chemical and material suppliers selling to business buyers
What does a chemical buyer check before asking you for a sample?
What a buyer needs to identify the product
These are the fields a buyer scans before deciding whether you are worth contacting. Missing one of them usually ends the visit without an email.
- 1
Product name and CAS number
Without a CAS number the buyer cannot confirm it is the same substance their specification names.
- 2
Grade and assay
Technical, food, pharmaceutical and reagent grades of the same molecule are different purchases.
- 3
Key specification values
Assay, moisture, particle size or viscosity — whatever the buyer's spec sheet lists.
- 4
Physical form
Powder, granule, flake and liquid forms change handling, freight and storage.
- 5
Packaging and pack sizes
25 kg bags, 200 L drums, IBCs and bulk are different logistics and different prices.
- 6
Minimum order quantity
Saves both sides an enquiry that was never going to work.
- 7
HS code
The buyer's import team needs it before they can cost the landed price.
The documents buyers ask for
Not all of them belong on a public page. Naming the ones you can issue is what separates a supplier who can be audited from one who cannot.
| Document | What it proves | Where it belongs |
|---|---|---|
| Technical Data Sheet (TDS)Asked at: first evaluation, before any contact | Product identity, grade and typical properties | Publish it |
| Safety Data Sheet (SDS)Asked at: before a sample can be shipped or received on site | Hazard classification, handling and transport information in the 16-section GHS format | Publish it |
| Certificate of Analysis (CoA)Asked at: with every shipment | That a specific batch met the published specification | Per shipment |
| ISO 9001 certificateAsked at: vendor approval | A quality management system, with a certificate number and issuing body | Publish it |
| REACH registration statusAsked at: by any european buyer, early | The legal position for placing the substance on the EU market | Publish it |
| Manufacturing role statementAsked at: immediately, and often decided without asking you | Whether you manufacture, repack or trade the product | Publish it |
| Plant and capacity evidenceAsked at: before a first large order | That you can supply at the volume discussed | Publish it |
Where chemicals and materials sites lose the enquiry
Each of these is common, cheap to fix, and costs an enquiry that never arrives — so nobody ever reports it.
No CAS number anywhere on the product page
The buyer cannot confirm it is the substance they are sourcing, and moves on rather than emailing to ask.
"ISO certified" with no certificate number or issuing body
An unverifiable claim reads as weaker than no claim at all to anyone who has run a vendor audit.
No statement of whether you manufacture or trade
Buyers who need a manufacturer assume you are a trader, because traders are the ones who leave it out.
What the enquiry form should ask
A form that collects these can be answered properly the first time. A form that collects a name and a message cannot.
Enquiry form — chemicals and materials
Enough to reply usefully, short enough that a buyer finishes it.
- Product and CAS number
- Removes the first round of clarification email.
- Grade or specification required
- Decides whether you can quote at all.
- Quantity and packaging
- Drives price more than anything else on the form.
- Destination country
- Determines registration, documentation and freight.
- Sample requirement
- A sample request and a commercial enquiry need different responses.
- End use or application
- Often required for regulatory declarations, and it tells you which grade to offer.
Questions suppliers ask
Should the Safety Data Sheet be downloadable without a form?
Yes. An SDS is a document the buyer's EHS team needs before they can even accept a sample, and gating it behind a form delays the part of the process you want to speed up. Gate commercial documents if you must; do not gate safety documents.
We are a trading house, not a manufacturer. Should we hide that?
No. Buyers who need a manufacturer will find out at the audit stage and the enquiry dies late instead of early. Buyers who need reliable sourcing and stock availability are looking for exactly what you are, and cannot find you when your site imitates a plant.
How much specification detail is too much to publish?
Publish what identifies the product and lets a buyer match it to their requirement. Keep customer-specific formulations, batch records and pricing private. If publishing a value would let a competitor replicate the product rather than recognise it, it belongs in the technical discussion.
Documents and standards named here are the ones buyers in this industry commonly ask for; requirements vary by market, customer and contract, so treat this as a starting checklist rather than a compliance list. Clearer pages can help discovery and evaluation. They do not guarantee rankings, AI citations, enquiries or revenue.
Illustrative
An enquiry from this search looks like: Product and CAS number · Quantity and packaging · Destination country · Grade or specification required
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