What to Specify When Buying N,N-Diethylacetoacetamide
N,N-Diethylacetoacetamide (DEAA, CAS 2235-46-3) is quoted against a small set of specification parameters, and in dye and pigment applications the color value and iron content matter as much as the assay. This guide covers typical specifications, packaging, documentation, and storage. For the underlying chemistry, see the technical overview.
Typical Specifications
| Parameter | Specification |
|---|---|
| Appearance | Yellow liquid |
| Assay | 98% min |
| Moisture | 0.3% max |
| pH | 5 – 7 |
| Color value | 7.0 max |
| Iron | 3 ppm max |
| Molecular formula | C8H15NO2 |
| Molecular weight | 157.21 g/mol |
Why These Parameters Matter
- Assay. A minimum of 98% ensures enough active beta-ketoamide for the reaction and limits by-products.
- Moisture. Water can hydrolyze the product and interfere with enolate chemistry, so 0.3% max is often required.
- pH. The 5 to 7 window signals a well-neutralized product with limited residual acid or amine.
- Color value. A low color value (7.0 max) is essential when the material is used to make pale or bright dyes and pigments.
- Iron. Iron at 3 ppm max avoids discoloration and interference in color-critical applications.
Packaging and Storage
N,N-Diethylacetoacetamide is a liquid and is supplied in the packaging size that suits the order, typically drums or IBCs. It should be stored cool and dry with the container tightly closed, away from heat, moisture, and strong oxidants, and handled with appropriate personal protective equipment.
Documentation: COA and SDS
A serious supplier provides a batch certificate of analysis (COA) that reports appearance, assay, moisture, pH, color value, and iron content, together with an up-to-date safety data sheet (SDS/MSDS). For dye and pigment customers, the COA should reflect the parameters that control color performance.
Supplier Qualification Checklist
- Confirm whether the supplier manufactures or trades the material, and the country of origin.
- Check that the quoted grade and specification match the COA you will receive.
- Confirm consistent batch-to-batch color value and iron content, not just a single lot.
- Verify lead time, packaging, and shipping terms for your production schedule.
Frequently Asked Questions
What purity of N,N-diethylacetoacetamide is typical?
Industrial grades are commonly specified at 98% min assay with moisture 0.3% max, pH 5 to 7, color value 7.0 max, and iron 3 ppm max.
Why is iron content specified?
Iron can discolour the product and interfere with color-critical dye and pigment applications, so it is usually held to a few ppm.
Does it come with a COA and SDS?
Yes. A batch COA covering appearance, assay, moisture, pH, color value, and iron, plus an up-to-date SDS, should be supplied.
Where can I buy N,N-diethylacetoacetamide?
PolyBlueChem supplies N,N-diethylacetoacetamide (CAS 2235-46-3) with COA and MSDS. Contact our team for specifications, packaging, and a quotation.
References
- PubChem Compound Summary for N,N-diethylacetoacetamide (CAS 2235-46-3).
- Supplier specification sheets for industrial-grade N,N-diethylacetoacetamide.
- Guidance on color-critical intermediates for dyes and pigments.
Disclaimer: This article is provided for general informational purposes only and does not constitute technical, regulatory, or safety advice. Always refer to the current safety data sheet and applicable regulations before handling this material.