Product Details


Didecyl Dimethyl Ammonium Chloride(D1021)

This powerful product represents a true benchmark in water treatment excellence, thanks to its ability to deeply penetrate and sterile anything in contact. With fast-acting qualities, the dwell time needed is shorter than most other products – meaning that results come quicker and easier than ever before. With biodegradability far superior to conventional quaternary ammonium compounds on the market today, D1021 will break down into harmless acetic acid without harm to humans or animals and without damage to our environment. Giving you peace of mind with every use. No matter what kind of water system you have; from a large-scale swimming pool keeping thousands cool over the summer season or simply household-cleaned items such as shower heads and small outdoor ponds then this super-efficient disinfectant is certainly up to the task!

Product Description

CAS: 7173-51-5

Molecular formula: C22H48ClN

Molecular weight: 362




AppearanceClear, pale yellow to straw liquidClear, pale yellow to straw liquid
Active content, %48-5278-82
pH(10% water solution)5.0-9.05.0-9.0
Free amine, %2.0 max2.0 max
Color (APHA)150 max150 max


Didecyl Dimethyl Ammonium Chloride(D1021) is a cationic surfactant of dialkyl dimethyl quaternary ammonium compounds. It is easily soluble in both water and organic solvents, and it is a light yellow liquid at room temperature with a stable chemical structure and low irritation.

Didecyl Dimethyl Ammonium Chloride(D1021) has a broad spectrum of activity against gram-positive and gram-negative bacteria, fungi, mildews, and enveloped viruses. It resists hard water, has strong surfactant and wetting properties, and is recognized for its efficacy against heavy organic soilings such as blood and proteins. This makes it suitable for worldwide acceptance based on registration approval and official lists.


Didecyl Dimethyl Ammonium Chloride(D1021) Is the third generation of quaternary ammonium compounds, boasting superior antimicrobial properties over first and second-generation products. It has a wide range of applications, including:

1. As a fungicide for injection water in oilfields and industrial circulating cooling water.
2. As a disinfectant, fungicide, and wood preservative agent.
3. As moth-proofing agents for textiles.
4. When combined with chlorine dioxide for hard surface sanitation, it kills bacteria.

Package and Storage:

Didecyl Dimethyl Ammonium Chloride (D1021) should be packaged in tight containers and stored in a cool, dry place away from direct sunlight. It is essential to keep the container sealed when not in use, as it is highly hygroscopic and may absorb moisture if left exposed.200L plastic drum, IBC(1000L), customers’ requirement. Storage for one year in a shady room and dry place.





N,N-Didecyl-N,N-dimethylammonium chloride




FAQs About D1021:

What is Didecyl Dimethyl Ammonium Chloride (D1021)?
It is an organic compound commonly used as an active ingredient in water treatment chemicals. It is a cationic surfactant and disinfectant that helps to remove suspended solids, oils, and other contaminants from water. It has a high cetyl content which gives it intense scrubbing action and provides excellent cleaning results.

What are the advantages of using D1021 for water treatment?
Using D1021 for water treatment offers several advantages, including:
• High efficacy in removing suspended solids, oils, and other contaminants from water;
• Cost-effectiveness;
• Biodegradability;
• Low toxicity;
• Compatibility with other water treatment chemicals.

Are there any potential risks associated with using D1021?
Although D1021 is generally considered to be safe when used properly according to the manufacturer’s instructions, potential risks may include skin irritation or allergies due to direct contact with the chemical itself or its vapors. Prolonged exposure to high concentrations of this chemical may also cause respiratory irritation or burn-like reactions on the skin. It is, therefore, important to use caution when handling this material and follow all safety guidelines provided by the manufacturer.

What are some common uses of D1021?
D1021 is most commonly used in industrial applications such as wastewater treatment plants, where it helps remove impurities from contaminated water sources before they reach our rivers, lakes, and oceans. It can also be used for cleaning drinking water supplies that have become contaminated due to natural disasters such as floods, hurricanes, or earthquakes, where traditional methods of filtration may not effectively remove all contaminants from the source water supply.

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