Buyers of polymers and chemicals encounter four document types again and again. They are not interchangeable.
| Document | What it is | Issued by | Covers |
|---|---|---|---|
| TDS — Technical Data Sheet | Typical properties and processing guidance for a grade | Producer | The grade, generically |
| SDS — Safety Data Sheet | Hazards, handling, storage and emergency information | Producer/importer | The product (GHS-aligned) |
| Product Specification | Agreed/guaranteed property limits | Producer/seller | Sales specification |
| Typical COA | Actual tested results for a batch/cargo | Producer/inspector | The specific batch |
A TDS tells you what a grade is designed to do; an SDS tells you how to handle it safely; a specification defines what you are contracting to buy; and a COA tells you what was actually delivered. For each product, BNM Petroleum's pages expose the relevant document actions. Documents are uploaded by administrators against the specific product and grade, and nothing is fabricated: where a document is not yet available, the action reads 'request' rather than 'download'.
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