Product Details


Di(OctylDecyl)Dimethyl Ammonium Chloride(D8021)

We understand the importance of protecting our greatest natural resource: clean water. This is why we are proud to offer Di(OctylDecyl)Dimethyl Ammonium Chloride to water treatment professionals across the globe. This powerful chemical agent has been rigorously tested and provides superior protection from harmful bacteria, viruses, and algae growing in water systems. Whether your mission is residential or commercial water treatment, Di(OctylDecyl)Dimethyl Ammonium Chloride will help take your efforts to the next level. Our product is safe and easy–to–use with standard filtration systems and requires no additional set–up time beyond the installation of the product itself And because it is environment-friendly, you don't need to worry about polluting lakes or rivers with harsh chemicals in order to keep them clean!

Product Description

CAS No. 68424-95-3

Molecular Formula: C32H66Cl2+4

Molecular weight: 521.77

Structural Formula:



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


Di(OctylDecyl)Dimethyl Ammonium Chloride(D8021) has excellent surface activity, stability, and biodegradability, making it an ideal choice for recirculation water systems. It is capable of controlling undesirable microbes without producing excessive foam or damaging the treated surfaces. Furthermore, Di(OctylDecyl)Dimethyl Ammonium Chloride(D8021) is effective in a wide range of applications, including injection water treatment in oilfields and industrial circulating cooling systems, fungi, and bacteria disinfection, wood preservative agents, and textile moth-proofing agents.


Di(Octyl/Decyl)Dimethyl Ammonium Chloride has special effects of emulsion, dyeing, sterilization, and disinfection washing. It can also be used as an antistatic agent, corrosion inhibitor, fabric softener, carding additive, mineral flotation agent, and polishing agent. When compounded with 1227, it is ideal for industrial water treatment as well as aquaculture and fruit trees, and farmland biocide applications. DDAC is particularly effective in the following fields:
1.Fungicide in injection water of oilfield and industrial circulating cooling systems.
2.Disinfectant, fungicide, and wood preservative agents.
3.Moth-proofing agents for textiles.

Package and Storage:

Di(Octyl/Decyl)Dimethyl Ammonium Chloride (D8021) should be stored in tightly closed original containers in a cool, dry, ventilated area. Containers that are opened must be carefully resealed and kept upright to prevent leakage. Ensure that it is not exposed to direct sunlight or excessive heat. Keep containers away from sources of ignition and incompatibles such as oxidizing agents, acids, and other halogenated compounds.200L plastic drum, IBC(1000L), customers’ requirement—storage for one year in a shady room and dry place.

Safety Protection:

Di(OctylDecyl)Dimethyl Ammonium Chloride(D8021) has a faint almond smell and does not visibly stimulate the skin. In the case of contact, flush with water immediately.


quaternary ammonium compounds,di-c8-10-alkyldimethyl,chlorides

dicapryl/dicaprylyl dimonium chloride

n,n-dialkyl(c8-10)-n,n-dimethylammoniumchloride (in 10% ethanol / 10%water)



di-c8-10-alkyldimethylammonium chloride

mixed dialkyl dimethyl ammonium chloride

n,n-dialkyl(c8-10)-n,n-dimethyl ammonium chloride (in 40% ethanol / 10%water)

FAQs about D8021 for Water Treatment Chemicals:

What is Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021)?
Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021) is a quaternary ammonium cationic surfactant used in water treatment applications. It is an organic compound used as a biocide, a disinfectant, and a general-purpose sanitizer. It can dissolve oils and fats, making it helpful in removing biofilms from surfaces and equipment.

How does Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021) work?
Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021) works by disrupting the cell membranes of bacteria and other microorganisms. The positively charged quaternary ammonium group attaches to the negatively charged cell membrane of microorganisms, weakening or destroying it and leading to the death of the organism.

What are some common applications of D8021?
Typical applications for D8021 include use in cooling towers, industrial wastewater treatment plants, swimming pools, water parks, laundry facilities, food preparation facilities, and other areas where microbial growth can cause problems. It can also be used as an algaecide in recreational ponds and fountains to control algae blooms and keep them under control over time.

Are there any safety concerns when using Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021)?
Yes, it is important to use caution when handling this substance as it can be dangerous if not handled properly or if contact with skin or eyes occurs without proper protective gear being worn, like goggles or gloves. In addition, this product should not be mixed with other chemicals as their reaction could be hazardous. Always refer to safety data sheets before handling any chemical products such as D8021.

What are some alternatives to using Di(OctylDecyl)Dimethyl Ammonium Chloride (D8021)?
Alternatives to D8021 may include copper-based algaecides such as copper sulfate or copper chloride; chlorine-based biocides such as sodium hypochlorite; or non-oxidizing biocides such as benzalkonium chloride or dimethyl dioctyl amine oxide depending on the application requirements and desired outcome needed for effective water treatments chemicals use in different areas.

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