How to Qualify an MDEA Sample Before Your First Order

Your lab has approved a sample of N-methyldiethanolamine (MDEA, CAS 105-59-9). When the first commercial shipment arrives, will the receiving team know which grade was approved and which results to check? Record those details during sample evaluation so they can carry through to the purchase order.

Agree on the tests before requesting a sample

Tell the supplier which grade you want to evaluate and what the lab will measure. A published MDEA technical data sheet lists assay, water content and APHA color as separate specification items. For each test your team requires, agree on the acceptance limit, units and test method before comparing results. If you also plan an application trial, record its acceptance criteria separately from the chemical specification. amines.com

Record exactly what your lab approved

Keep the sample ID, supplier grade, lot number if available, and any accompanying certificate of analysis (COA) with the lab results. Ask whether the sample came from the lot proposed for shipment. If the first order will ship from a different lot, ask for that lot’s COA and check it against the agreed specification.

Carry the acceptance criteria into the purchase order

Reference the approved grade and specification revision on the purchase order. If the lab used a tighter limit than the supplier’s standard specification, get written confirmation that the commercial order will meet it. State whether you need a COA for each lot and whether your team needs to review it before dispatch or at receipt.

Request an MDEA sample and commercial quote

Send China Amines Co., Limited the required grade, sample quantity, intended application and test criteria. If a commercial order is planned, include the expected net quantity, preferred packaging, destination port and target delivery date so we can review the sample request and quotation together.

Inquiries
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Technical references

• Amines & Plasticizers Limited — Methyl Diethanolamine Technical Data Sheet
• BASF Gas Treatment — Formulations and Solvents