Low foam surfactants

What is Low Foam Surfactant?

A low foam surfactant is a surfactant that minimizes foam formation; EO/PO block or random copolymers are common types, with the PO component reducing foam while retaining detergency and wetting.

What is the CAS number of Low Foam Surfactant?

The CAS number of Low Foam Surfactant is 9003-11-6.

What is Low Foam Surfactant used for?

Low foam surfactants are used in industrial and machine cleaning; in rinse aids and dishwashing; in textile processing; in paper defoaming; and in metalworking and CIP systems. Venus Ethoxyethers manufactures and supplies in India; request a quote for your requirements.

Low-foam surfactants are engineered for applications where rapid wetting and detergency are required without stable foam generation. Venus Ethoxyethers manufactures low-foam nonionic wetting agents based on controlled alkoxylation of fatty alcohols, EO/PO block copolymers, and alkyl-capped structures—delivering fast wetting, low dynamic surface tension, and excellent soil removal in machine cleaning and industrial processes.

How low-foam performance is achieved

Foam profile is managed by adjusting the degree of ethoxylation/propoxylation, alkyl chain length, and block architecture of the surfactant molecule. End-capped and EO–PO copolymer grades position hydrophobic segments at the air–liquid interface to destabilize foam films quickly. Most Venus low-foam products have low freezing points and do not form viscous gels when diluted—simplifying handling in automated dosing systems.

Key product families

• EO/PO block copolymers (CAS 9003-11-6) — see EO/PO block copolymers for cloud-point-tuned wetting and defoaming.
• Alkyl-capped surfactants — alkyl capped surfactants and methyl-capped grades for spray and CIP cleaning.
• Low-mole alcohol ethoxylates — based on ethoxylated alcohols and narrow-range ethoxylates for predictable performance.

Applications

Low-foam surfactants are used in mechanical dishwashing, metal parts washing, dairy and brewery CIP, pulp and paper wet-end additives, textile jet machines, and institutional floor care. They are compatible with anionic, cationic, and other nonionic surfactants and perform consistently in hard water. Pair with dedicated defoamers where entrained air from other additives must be controlled.

Formulation support

Venus application chemists assist with foam height testing, cloud point selection, and electrolyte tolerance screening. Read the low-foam surfactants guide and EO/PO block copolymers guide for detailed selection criteria, or request samples for your cleaning or process application.

EO-PO Copolymer

EO-PO Copolymers (CAS Number: 9003-11-6) are low foaming surfactants produced by block or random copolymerization. See also alkyl capped surfactants and defoamers.

END CAPPED SURFACTANTS