Industrial Purity Specifications for N,N-Dimethyl-4-Morpholineethanamine (CAS 4385-05-1)
- High-Purity Standards: Industrial grade specifications typically require ≥99.0% purity with strict limits on residual amines and moisture content.
- Analytical Rigor: Quality control relies on GC-FID and Karl Fischer titration to ensure compliance with pharmaceutical and rubber industry benchmarks.
- Bulk Procurement: Sourcing from a verified global manufacturer ensures consistent supply chains and competitive bulk pricing for large-scale production.
In the landscape of fine chemical intermediates, N,N-Dimethyl-4-morpholineethanamine (CAS 4385-05-1) represents a critical building block for diverse industrial applications. Also known structurally as 4-[2-(Dimethylamino)ethyl]morpholine, this compound serves as a vital precursor in the synthesis of rubber vulcanization accelerators, such as NOBS and OTOS, and acts as a key intermediate in pharmaceutical manufacturing for local anesthetics and painkillers. For process chemists and procurement managers, understanding the nuanced specifications regarding industrial purity is essential for maintaining reaction yields and downstream product quality.
As a premier global manufacturer, NINGBO INNO PHARMCHEM CO.,LTD. adheres to stringent quality control protocols to ensure that every batch meets the rigorous demands of GMP and industrial chemical sectors. This technical overview details the physical properties, analytical methods, and compliance requirements necessary for sourcing this material at scale.
Standard Industrial Purity Benchmarks (≥98%)
The commercial viability of 4-[2-(Dimethylamino)ethyl]morpholine depends heavily on its purity profile. While laboratory-grade samples may be sold in milligram quantities at premium rates, industrial procurement focuses on metric ton scalability with consistent quality. The standard industrial purity benchmark for this intermediate is typically ≥99.0% as determined by gas chromatography.
Key impurities that must be controlled include residual morpholine, dimethylamine, and unreacted starting materials from the synthesis route. High levels of these contaminants can interfere with subsequent alkylation or acylation reactions, leading to reduced yields in the final active pharmaceutical ingredient (API) or rubber additive. Therefore, specifications often include limits on related substances, usually requiring total impurities to remain below 1.0%.
When evaluating suppliers for bulk orders, buyers should verify the distillation parameters used during manufacturing. Fractional distillation under reduced pressure is the standard purification method to achieve the required boiling point range of 93-94 °C at 20 mm Hg. For those seeking verified high-purity materials, sourcing N-Dimethyl-2-morpholinoethanamine from a certified facility ensures that these physical constants are met consistently.
Physical and Chemical Properties
Understanding the physicochemical profile is vital for handling and storage. The following table outlines the critical specifications expected in a standard Certificate of Analysis (COA).
| Parameter | Specification | Test Method |
|---|---|---|
| CAS Number | 4385-05-1 | N/A |
| Molecular Formula | C8H18N2O | N/A |
| Molecular Weight | 158.24 g/mol | Calculation |
| Purity (GC Area %) | ≥ 99.0% | GC-FID |
| Density | 0.925 g/mL at 25 °C | ASTM D4052 |
| Boiling Point | 93-94 °C at 20 mm Hg | Distillation |
| Water Content | ≤ 0.5% | Karl Fischer |
| Appearance | Colorless to Pale Yellow Liquid | Visual |
Analytical Methods for Impurity Profiling
Reliable quality assurance requires robust analytical methodologies. In the context of N-(2-dimethylaminoethyl)morpholine, gas chromatography (GC) coupled with a flame ionization detector (FID) is the industry standard for assay determination. This method allows for the separation of the main peak from closely eluting impurities such as cyclic amines or oligomers formed during synthesis.
Water content is another critical parameter, particularly for reactions sensitive to hydrolysis. Karl Fischer titration is employed to ensure moisture levels remain within acceptable limits, typically below 0.5%. Furthermore, refractive index measurement (n20/D 1.4582) serves as a rapid identity test during incoming quality control checks. A deviation in refractive index often signals the presence of solvent residues or significant impurity loads.
For pharmaceutical applications, heavy metal testing and residual solvent analysis according to ICH Q3 guidelines may also be required. A comprehensive COA should reflect these data points, providing transparency into the chemical composition of the batch. This level of detail distinguishes bulk industrial suppliers from general chemical traders.
COA Requirements for GMP and Regulatory Compliance
Procurement teams must ensure that the supplied COA aligns with regulatory expectations for the intended use case. In rubber manufacturing, the focus is primarily on assay purity and density. However, for pharmaceutical intermediates, the documentation must support traceability and safety.
Key elements of a compliant COA include:
- Batch Number and Manufacturing Date: Essential for traceability in case of quality disputes.
- Expiry or Retest Date: Given the storage recommendation of 2-8°C or dark at room temperature, stability data must be clearly defined.
- Safety Data: Alignment with GHS standards, including hazard statements (H315, H319, H335) and precautionary measures.
- Packaging Details: Confirmation of packaging integrity, typically 25kg drums or barrels for bulk shipments.
Storage conditions play a significant role in maintaining purity over time. The material should be kept in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing agents. Proper storage prevents degradation that could alter the bulk price value proposition by rendering the material unusable for sensitive syntheses.
Strategic Sourcing and Bulk Procurement
The market for 4-Morpholineethanamine, N,N-dimethyl- varies significantly based on volume. While small-scale research quantities command high unit prices, industrial contracts leverage economies of scale. Partnering with a dedicated manufacturer like NINGBO INNO PHARMCHEM CO.,LTD. provides access to consistent production capacity and technical support.
Buyers should prioritize suppliers who offer flexibility in logistics, including FOB and CIF options, to streamline the supply chain. Verification of the manufacturer's ability to pass third-party inspections, such as SGS or ISO audits, further mitigates supply risk. By focusing on technical specifications and regulatory compliance rather than solely on initial cost, procurement managers can secure a reliable supply of this essential intermediate for long-term production cycles.
In conclusion, securing high-quality N,N-Dimethyl-4-morpholineethanamine requires a deep understanding of purity benchmarks, analytical verification, and regulatory documentation. By adhering to these industrial standards, manufacturers can ensure optimal performance in both rubber vulcanization and pharmaceutical synthesis applications.