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Trideceth-9 is an indispensable ingredient in the field of cosmetics and personal care. Serving as a surfactant, it is compatible with both water and oil, making Trideceth-9 an effective cleansing and foaming agent. In its raw form, it presents as a hazy liquid with a mild odor. Trideceth-9 also aids in reducing the surface tension between different components in a formulation, making them more stable. It is a type of polyethylene glycol ether, obtained through the ethoxylation of tridecyl alcohol, where "-9" indicates the average number of ethoxy units.

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Effect in Cosmetics

Trideceth-9 has a variety of effects and applications, some of which are listed below:
As an emulsifier, it helps mix water and oil, improving product stability.
As a foaming agent, it enhances the foam performance of cleaning products.
As a cleanser, it effectively removes dirt and oil from the skin's surface.


Trideceth-9 is produced by reacting tridecyl alcohol (a long-chain fatty alcohol) with ethylene oxide.
The production process involves ethoxylation, a chemical addition reaction used to increase the number of ethoxy (-CH2CH2O-) units.

Globally Harmonized System of Classification and Labelling of Chemicals 


According to the European Chemicals Agency (ECHA), Tetrasodium Iminodisuccinate may have the following hazards:

Harmful if swallowed - Acute toxicity
High concentrations may cause skin irritation
May cause eye irritation
Under the concentration and conditions of use stipulated by the EU and Taiwan, Tetrasodium Iminodisuccinate is safe in cosmetics.
Trideceth-9 is a safe ingredient, with no known adverse effects or irritation to the skin when used in cosmetics.

The Tetrasodium Iminodisuccinate used in our company's products complies with the safety levels set by the EU and Taiwan.


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