Description

Starch Diethylaminoethyl Ether is a chemically modified starch derivative, also known as DEAE-Starch, where diethylaminoethyl groups are introduced to impart cationic properties. This modification is critical for creating a positively charged polymer matrix, enabling unique interactions with anionic molecules and surfaces. It serves as a versatile functional material for demanding applications in life sciences, chromatography, and industrial processes where charge-based separation or binding is required.

Application

• Ion-Exchange Chromatography: Widely used as a cationic stationary phase for the purification and separation of proteins, enzymes, nucleic acids, and other negatively charged biomolecules.
• Pharmaceutical Excipient: Employed as a tablet disintegrant or binder in controlled-release formulations, leveraging its swelling and charge properties.
• Biotechnology & Research: Acts as an adsorbent or support material for enzyme immobilization, cell culture, and affinity purification processes.
• Water Treatment: Utilized as a flocculant or clarifying agent to remove suspended solids and anionic contaminants from industrial wastewater.
• Paper & Textile Industry: Functions as a wet-end additive to improve retention, drainage, and strength properties of paper, and as a cationic sizing agent in textiles.
• Cosmetics & Personal Care: Incorporated into formulations like hair conditioners and skin creams as a cationic thickener and conditioning agent.

Basic Information

Product Name	Starch Diethylaminoethyl Ether
CAS No.	9041-94-5
Molecular Formula	(C6H10O5)n with (C2H5)2NCH2CH2- substituents
Molecular Weight	Variable (Polymer)
Synonyms	DEAE-Starch; Diethylaminoethyl Starch; 2-(Diethylamino)ethyl Starch Ether; Starch, 2-(diethylamino)ethyl ether; Aminoethyl Starch Derivative; Cationic Starch; Starch DEAE; Starch, diethylaminoethyl ether; DEAE Starch
EINECS	Contact for details

Quality Control

Our Starch Diethylaminoethyl Ether is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency and performance for critical applications. Key parameters monitored include nitrogen content (degree of substitution), viscosity, pH, moisture, and microbiological limits. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms
Nitrogen Content (Substitution Degree)	0.1 - 0.5% (or as per grade)
pH (in solution)	6.0 - 8.5
Loss on Drying	≤ 10.0 %
Residue on Ignition (Ash)	≤ 1.0 %
Microbiological Analysis	Meets standard limits

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.