Quality & compliance
Documentation is the part of a chemical purchase that goes wrong most often. A grade that meets specification but arrives with an unusable safety data sheet is still a rejected shipment. This page sets out what we issue and when.
Specification and analysis
- Product specification — the standard grade values published on every product page. Tighter specifications are agreed before the order and confirmed against the batch.
- Certificate of analysis — issued per production batch, against the agreed specification, and sent with the shipping documents or in advance on request.
- Retained samples — available for reference when a dispute needs resolving against the batch actually shipped.
Safety data sheets
Safety data sheets for part of our catalogue are published in full — sixteen sections, GHS/CLP classification, hazard and precautionary statements, transport classification — and linked directly from the product page. They are prepared for the format European and other regulated markets require, and the substance identity in each one is verified against the CAS registry entry rather than against a marketing product name.
Browse published safety data sheets
Where a classification comes from
Two sources, never mixed and never presented as one:
- 62 products carry the EU harmonised classification from Annex VI to the CLP Regulation, with the ATP and the date of the export stated on the product page. This is law, not opinion.
- 32 products carry a classification derived from a filtered consensus of PubChem notifications. It is labelled not harmonised everywhere it appears, because a self-classification consensus is evidence, not a legal classification.
- The remaining 55 carry no classification on the site. That is deliberate: an invented classification on a safety document is worse than an absent one.
Of the classified grades, 55 carry the signal word Danger and 39 Warning. Both figures come from the same source as the classification itself.
Substance identity
Before a grade is published, the name, the CAS number, the molecular formula and the molecular weight are checked against each other. Where they disagreed we corrected the record and told the customer which value changed — 129 of 149 products now carry a CAS number that has passed that check. A product whose identity we could not settle is published without a CAS rather than with a plausible one.
Document set
| Safety data sheet | 16 sections, GHS/CLP, transport classification; published for 56 grades |
|---|---|
| Certificate of analysis | Per production batch, against the agreed specification |
| Technical data sheet | On request, for grades where the application needs more than the specification |
| Certificate of origin | Issued with the shipment where the destination requires it |
| Export licence | For hazardous and precursor grades, prepared with the quotation |
Controlled products
Where a product is regulated as a drug precursor or an explosives precursor, three things happen before a quotation is issued:
- you state the intended end use and the receiving legal entity;
- we check what the destination market requires — registration, licence or declaration;
- we confirm in writing whether the shipment can be made, and under which documents.
This sequence is not negotiable and it is not a formality. It is also the reason we can ship grades that most suppliers decline.
What we will not do
- We do not issue a safety data sheet for a substance whose identity we have not verified.
- We do not supply controlled grades without end-use documentation, whatever the order value.
- We do not publish specification values we cannot reproduce on the production batch.