SDS, CoA and Controlled Chemicals: The Documentation a Lab Order Needs in the UAE

Four documents, four different jobs

A Safety Data Sheet (SDS) describes hazards, handling, storage, incompatibilities, personal protective equipment and emergency response. It is about the substance, not your batch, and it should reach you before the material does.

A Certificate of Analysis (CoA) reports the test results for a specific lot. It is the document that proves the drum in your store meets the specification you ordered.

A Technical Data Sheet (TDS) describes what the product is for and how it performs — dose ranges, compatibility, physical properties. It is commercial and technical, not a quality record.

A Certificate of Origin or Conformity supports customs clearance, tender submissions and, for some institutional buyers, vendor qualification. It says where the material came from and, in the conformity case, which standard it meets.

Reading a CoA properly

The first thing to check is whether the certificate is lot-specific or a sheet of typical values. Typical values are a marketing description of the product line; a lot-specific certificate names your batch number and reports what was measured on it. For anything feeding a validated method, a regulated process or a tender, insist on lot-specific.

Then check three fields: the lot number matches the container in front of you, the test date and expiry or retest date, and that the parameters reported are the ones your method depends on. A CoA that reports assay but not water content is not useful for a Karl Fischer-sensitive application, however impressive the assay figure.

What to check on an SDS before the drum arrives

Read the SDS at ordering time, not at delivery. Four sections decide whether you can accept the material: the hazard classification and GHS pictograms, which tell you what your store is now holding; storage requirements and incompatibilities, which decide where it can physically go; the personal protective equipment your team needs; and the spill and first-aid response, which has to be in place before, not after.

Incompatibilities cause more avoidable incidents in small laboratories than anything else. Oxidisers stored beside organics, acids beside hypochlorite, flammables in a domestic fridge — each of these is an SDS line that was never read. If the SDS changes your storage plan, that is the document doing its job.

Controlled and restricted items

Some chemicals cannot simply be bought. Precursors, certain solvents, high-concentration acids and a range of dual-use substances require proof of eligibility, an end-use declaration, or approval from the relevant authority before a supplier can ship them. This is normal, it applies to legitimate laboratories, and it is not a judgement about your work.

Two things make it painless. State the intended use and the end user when you request the quote, so the supplier can tell you immediately which approvals apply. And expect the paperwork to add time to the lead time rather than to the price — if you need the material for a project date, start the enquiry earlier rather than ordering a smaller quantity later.

Confirm the specific requirements applying to your facility and to each substance with your supplier and the authority having jurisdiction — they vary by material, by quantity and by the emirate and free zone you operate in.

Cold chain and temperature-sensitive documentation

For reagents shipped at 2–8 °C, −20 °C or on dry ice, the documentation extends to the shipment itself: the packing method, the temperature condition stated on the quote, and — where the material justifies it — a temperature record for the journey.

Agree in advance what happens if a shipment arrives warm. A clear position on quarantine, testing and replacement, written into the order, is worth more than any assurance given afterwards.

Build the pack before the audit asks for it

Institutional buyers, tenders and quality audits ask for the same bundle: SDS for every hazardous item, lot-specific CoAs for materials in scope, certificates of origin, and evidence that the supplier is a registered vendor. Assembling that retrospectively across a year of deliveries is painful; collecting it per delivery is trivial.

The simplest working system is a folder per supplier and a rule that no delivery is signed off until its documents are filed. Ask your supplier to attach the CoA to the delivery note as standard — a good one will already be doing it.

Documentation to request with the order

• SDS for every hazardous item, before shipment
• Lot-specific CoA for regulated, validated or tender-bound materials
• Technical data sheet where dosing or compatibility matters
• Certificate of origin or conformity for institutional and tender orders
• End-use declaration where the item is controlled or restricted
• Cold-chain condition stated on the quote, and the agreed action if it is breached

Frequently asked questions

Why does my supplier need an end-use declaration?

Certain chemicals are controlled because they have applications beyond the laboratory. A supplier is required to establish eligibility and legitimate end use before shipping them. Providing the declaration and end-user details at enquiry stage means the approval runs in parallel with sourcing rather than after it.

Is a typical-values sheet acceptable instead of a CoA?

For general laboratory consumables, often yes. For anything feeding a validated method, a regulated product, or a tender submission, no — you need a certificate naming your lot number and reporting results measured on that lot.