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N,N-Diethylacetamide (CAS 685-91-6) is a tertiary amide chemical. Industrial buyers should qualify the exact identity, agreed specification, batch COA, current SDS, and destination-specific documentation before approving a purchase—not rely on a generic listing.
For procurement, R&D, and QC teams, the decision is not simply whether a material can be quoted. It is whether the offered batch and its document package match the intended process, internal change-control requirements, and destination review.
What Is N,N-Diethylacetamide and How Should Buyers Identify It?
Use the full chemical name and CAS number together as the first identity control. N,N-Diethylacetamide is also called acetamide, N,N-diethyl-, diethylacetamide, or N-acetyldiethylamine. The PubChem compound record[1] and the NIST Chemistry WebBook entry[2] identify CAS 685-91-6, molecular formula C6H13NO, and molecular weight 115.17 g/mol. These public records are useful for screening, but they do not establish a supplier batch’s quality or suitability.
In a purchase request, distinguish N,N-Diethylacetamide from similarly named amides such as N,N-dimethylacetamide. A one-character name error can send an inquiry, COA comparison, or internal material master down the wrong path. Require the same product name, CAS number, and agreed grade description on the request, quotation, COA, SDS, label text, and receiving record.
| Identity review item | Why it matters | What to confirm |
|---|---|---|
| Chemical name and CAS | Prevents confusion with another amide | N,N-Diethylacetamide; CAS 685-91-6 |
| Synonym control | Supports search and document matching | All names used in the buyer’s material master and incoming documents |
| Molecular identity | Provides an independent screening check | C6H13NO and 115.17 g/mol from a reference source |
| Intended role | Sets relevant quality attributes | Process context and whether the material is used as a solvent, intermediate, or other reviewed role |
Which Specification Items Should Be Agreed Before Qualification?
Agree the specification around the process risk, then use the COA to verify that agreement for the offered batch. A catalogue value, literature property, or third-party grade must not be copied into a purchasing specification. The appropriate release criteria depend on the buyer’s route, analytical method, impurity sensitivity, and downstream separation or formulation constraints.
Build a fit-for-purpose review list
For a liquid tertiary amide, buyers commonly decide whether assay/identity, water content, appearance, color, relevant residual or related substances, and acidity/basicity controls need to be specified. That is a review framework, not a claim that every parameter is included in every TUODA grade. Ask which test method, unit, acceptance limit, and reporting format will apply before comparing quotations.
| Specification or COA item | Operational consequence | Buyer checkpoint |
|---|---|---|
| Assay and identity method | Confirms the intended material for process calculations | Method, basis, and agreed acceptance criteria |
| Water content | May affect water-sensitive downstream chemistry or storage review | Whether a limit and test method are required |
| Appearance and color | Helps detect a mismatch or unusual batch condition | Agreed visual description and inspection procedure |
| Relevant impurities | May affect reaction, odor, separation, or formulation risk | Which impurities matter for the stated application |
| Batch traceability | Supports release, deviation review, and reordering | Lot number, manufacture/retest information where applicable, and COA linkage |
TUODA’s N,N-Diethylacetamide product page and its pharmaceutical-intermediates portfolio are appropriate starting points for an inquiry. They do not replace a project-specific agreement on grade, testing, or acceptance criteria.
How Should COA, SDS, and Technical Documents Be Reviewed?
Review each document for consistency with the exact material and batch, and use the current SDS as the safety reference. The COA should be traceable to the batch offered and should state the agreed tests and results. The SDS is not a substitute for a COA, and a COA is not a substitute for a safety assessment. Each serves a different decision.
OSHA’s N,N-Dietil-acetamid: Specifikációs és dokumentációs ellenőrzőlista ipari vásárlók számára | TUODA ipari betekintések[3] illustrates why a buyer should check product identification, hazards, composition, transport information where relevant, handling and storage guidance, and revision date in a current document. Destination requirements can differ, so the receiving organization should have qualified personnel assess the product-specific SDS, site conditions, and applicable rules.
When a technical data sheet is available, use it to clarify what the supplier represents for the offered grade and what requires confirmation. Do not treat a generic SDS, a prior COA, or a literature data table as a standing promise for a new lot.
What Safety and Logistics Questions Belong in the Procurement Review?
Safety and logistics must be evaluated from the current, grade-specific SDS and the stated destination—not inferred from a similar solvent. This article does not provide handling instructions, transport classifications, packaging formats, or compatibility approvals. Those decisions require the actual product documents, trained personnel, site risk assessment, and applicable regulations.
The UN Globally Harmonized System reference[4] explains the wider framework used to communicate chemical hazards. For a purchase, confirm that the SDS revision, label language, documentation needs, packaging proposal, transport mode, and destination constraints are reviewed together. Do not assume that an outcome for one destination, quantity, or package applies to another.
| Procurement stage | Question to resolve | Required evidence |
|---|---|---|
| Technical inquiry | Is the material identity and grade definition complete? | Product/CAS, application context, target specification |
| Quality qualification | Can the offered lot be evaluated against agreed criteria? | Batch COA, test methods where needed, traceability details |
| Safety review | Can the receiving site assess its controls? | Current grade-specific SDS and site assessment |
| Order planning | Can documentation and logistics be reviewed for the destination? | Quantity, packaging preference, destination, requested documents |
What Should an N,N-Diethylacetamide RFQ Include?
A useful RFQ describes the technical decision the supplier must support, rather than requesting only a price. State N,N-Diethylacetamide or CAS 685-91-6, the intended industrial context at a non-confidential level, target specification, expected quantity, packaging preference, delivery destination, and required documents. Include the critical tests or impurity controls if they are known, and say whether a batch COA, SDS, TDS, or other document review is needed before approval.
TUODA supplies industrial buyers with catalysts, pharmaceutical intermediates, and fine chemicals. Kapcsolat | Globális vegyi anyag beszállító - TUODA INDUSTRY LIMITED with the product or CAS number, target specification, quantity, packaging preference, delivery destination, and documentation requirements for a project-specific review.
References
Reference 1
[1] National Center for Biotechnology Information, PubChem record for N,N-Diethylacetamide (CID 12703): identity and synonyms.
Reference 2
[2] National Institute of Standards and Technology, Chemistry WebBook entry for Acetamide, N,N-diethyl-: CAS, formula, molecular weight, and reference data.
Reference 3
[3] Occupational Safety and Health Administration, 29 CFR 1910.1200 Appendix D: minimum safety data sheet information framework.
Reference 4
[4] United Nations Economic Commission for Europe, Globally Harmonized System of Classification and Labelling of Chemicals, revision 10.