Product Details


Octadecyl Trimethyl Ammonium Chloride(OTAC)

OTAC is a cationic surfactant with excellent emulsifying, wetting, dispersing, and detergency properties. It is also an efficient builder for water hardness and alkalinity. OTAC can be used in textile auxiliaries, the leather industry, the petroleum industry, agrochemicals, and other industries. If you are looking for a high-quality Octadecyl Trimethyl Ammonium Chloride(OTAC) for Water Treatment Chemicals, look no further than our products from China. We offer a wide range of chemicals that are perfect for your needs, and we guarantee their quality.

Product Description

CAS No. 112-03-8

Molecular Formula: C21H46NCL

Molecular weight:348.05

Structural Formula:



AppearanceColorless to pale yellow liquidColorless to pale yellow cream liquid
Active content, %48-5268-72
pH(10% water solution)4.0-9.04.0-9.0
Free amine, %1.5 max2.0 max


Octadecyl Trimethyl Ammonium Chloride (OTAC) is soluble in water, ethanol, and methanol and is compatible with cationic, nonionic, and amphoteric surfactants. It has good chemical stability when exposed to heat, light, pressure, and acid or alkaline solutions. OTAC also possesses excellent permeability, softness, emulsification, and anti-electrostatic and bactericidal properties.


Octadecyl Trimethyl Ammonium Chloride (OTAC) can be used as a fabric softener, raw material for asphalt emulsion and hair conditioner, organic bentonite modifier, protein coagulant, or flocculant in the bio-pharmaceutical industry, antistatic agent of textile fiber and hair adjustment agent. Additionally, OTAC can be used as an emulsifier of asphalt, silicone oil, and rubber, as bacteria for cycling cooling water, and disinfectant.

Package and Storage:

Octadecyl Trimethyl Ammonium Chloride (OTAC) should be stored in a dry, cool, and ventilated place away from fire and heat sources. It should be sealed and packed to prevent moisture and foreign matter contamination. 200L plastic drum,IBC(1000L),customers’ requirement. Storage for one year in a shady room and dry place.

Safety Protection:

Octadecyl Trimethyl Ammonium Chloride (OTAC) has a faint almond smell and does not visibly stimulate the skin. In the case of contact, flush with water immediately.



Octadecyl Trimethyl Ammonium Chloride


Stearyl Trimethyl Ammonium Chloride

TrimethylStearylAmmonium Chloride

1-octadecanaminium,n,n,n-trimethyl-, chloride

Faqs about  OTAC:

What is Octadecyl Trimethyl Ammonium Chloride (OTAC)?
Octadecyl Trimethyl Ammonium Chloride (OTAC) is a quaternary ammonium compound used in water treatment chemicals. It is a cationic surfactant, meaning it carries both a positive and negative charge which makes the compound highly soluble in water. This allows it to be used as an effective dispersant, emulsifier, and antibacterial agent.

What are the benefits of OTAC for water treatment?
OTAC has many benefits when used as a water treatment chemical. It can aid in the dispersion of contaminants, helping to break them down into smaller particles that can be more easily filtered out. Additionally, OTAC acts as an antibacterial agent, which helps to reduce levels of bacteria and other microorganisms in drinking water supplies. Finally, it functions as an emulsifier, allowing for easier mixing of different substances together.

Is OTAC safe for human consumption?
Yes, OTAC is considered to be safe for human consumption when used at specific concentrations and under specific conditions.

How does OTAC work?
OTAC works by forming strong bonds with bacteria cells that contain positively charged ions such as calcium and magnesium. This causes the bacteria cells to become disrupted which then makes them easier to filter out from the water supply. Additionally, due to its cationic charge, the compound also binds with colloids present in water supplies, so they, too, can be filtered more easily.

Get the complete Cationic Surfactant solution.


Related products

Consult Us Now for Water Treatment Chemical Solutions

We’re Always Here To support

We’re Always Here To support

Contact Form 询盘表单
Scroll to Top
Contact Form 询盘表单