MDEA Typical Values vs. Guaranteed Specifications

A technical data sheet for N-methyldiethanolamine (MDEA, CAS 105-59-9) may list a minimum assay, a maximum water content and a single viscosity value. Before copying those numbers into a purchase order, check how the supplier defines each entry. Your receiving team needs agreed acceptance limits to review the delivered batch.

Read the headings and qualifiers

Look for terms such as minimum, maximum, range and typical. One published MDEA data sheet places assay, water content and color under “Specification,” while viscosity and refractive index appear under “Other Properties.” That layout helps identify which values need clarification when reviewing an offer. amines.com

A typical property gives a representative value for the grade. If that property matters to your process, ask the supplier to confirm an acceptable range, test conditions and whether it can be included in the agreed supply specification.

Put acceptance limits in the purchase specification

For each required parameter, record the limit, unit and test method. Include the measurement temperature where relevant. For example, a requirement for density needs a temperature basis, while a water limit needs a clear mass or volume basis.

If your engineering team needs viscosity within a particular range, share that requirement during quotation review. The supplier can then confirm whether the proposed grade and available testing meet it.

Compare the batch result with the agreed requirement

Suppose a data sheet gives a typical color of 20 APHA, while the agreed purchase specification allows a maximum of 50 APHA. In this hypothetical example, a batch result of 30 APHA meets the agreed color limit. Use the same approach for every required parameter, comparing the measured result with its corresponding acceptance criterion.

If the COA omits a result your quality team requires, request it before completing the batch review.

Request MDEA against your required specification

Send China Amines Co., Limited your required grade, acceptance limits, test methods, net quantity, preferred packaging and destination port. Highlight any typical property that your plant needs as a guaranteed requirement so we can review it with the quotation and documentation request.

Inquiries
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Technical references

• Amines & Plasticizers Limited — Methyl Diethanolamine Technical Data Sheet