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Demulsifiers

Demulsifiers are substances used to separate emulsions.

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ABS Acid (Dodecylbenzenesulfonic Acid) ABS acid is an anionic surfactant of the alkylbenzene sulfonate group, in acid form. Due to its acidic form, the product is available with an active content of more...
Composition
Alkylbenzene sulphonates
CAS No.
85536-14-7
ABS Acid (Dodecylbenzenesulfonic Acid)
EXOdemul S-11 (EO/PO block copolymer) EXOdemul S-11 is a specialized non-ionic surfactant designed for the needs of the petroleum industry. It takes the form of a viscous liquid with an active substance...
Composition
Mixtures, EO/PO block copolymers
EXOdemul S-11 (EO/PO block copolymer)
EXOdemul WD-18 (Block copolymer) EXOdemul WD-18 is a specialized non-ionic surfactant designed for the oil industry. The product is offered in a form of a viscous liquid with active substance content...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
EXOdemul WD-18 (Block copolymer)
ROKAfenol N22 (Nonylphenol ethoxylated) ROKAfenol N22 is a non-ionic surfactant belonging to the group of ethoxylated nonylphenols (INCI name: Nonoxynol-22). It is used as a component of washing and cleaning...
Composition
Alkoxylated nonylphenols
CAS No.
127087-87-0
ROKAfenol N22  (Nonylphenol ethoxylated)
ROKAfenol N22/30 (Nonylphenol ethoxylated) ROKAfenol N22/30 is a non-ionic surfactant which belongs to the group of ethoxylated nonylphenols (INCI name: Nonoxynol-22). It is used as a component of washing...
Composition
Alkoxylated nonylphenols
CAS No.
127087-87-0
ROKAfenol N22/30   (Nonylphenol ethoxylated)
ROKAfenol N6P4 (Ethoxylated, propoxylated nonylphenol) ROKAfenol N6P4 belongs to the group of non-ionic surfactants. It is an nonylphenyl ether copolymer of ethylene oxide and propylene oxide. The commercial product...
Composition
Alkoxylated nonylphenols
CAS No.
37251-69-7
ROKAfenol N6P4  (Ethoxylated, propoxylated nonylphenol)
ROKAfenol N6P6 (Ethoxylated, propoxylated nonylphenol) ROKAfenol N6P6 is a non-ionic surfactant belonging to the group of alkoxylated nonylphenols. It is in the form of an oily liquid which solidifies at a temperature...
Composition
Alkoxylated nonylphenols
CAS No.
37251-69-7
ROKAfenol N6P6  (Ethoxylated, propoxylated nonylphenol)
ROKAfenol N8P7 (Nonylphenol ether of the EO/PO copolymer) ROKAfenol N8P7 is a non-ionic surfactant (alkoxylated nonylphenols). It is an opalescent, turbid or clear oily liquid with a straw or light yellow colour. The commercial...
Composition
Alkoxylated nonylphenols
CAS No.
37251-69-7
ROKAfenol N8P7  (Nonylphenol ether of the EO/PO copolymer)
ROKAmer®2000 (EO/PO block copolymer) ROKAmer 2000 belongs to the group of non-ionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). The product is a clear, colourless liquid with...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2000 (EO/PO block copolymer)
ROKAmer®2100 (EO/PO block copolymer) ROKAmer 2100 belongs to the group of nonionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). ROKAmer 2100 is among products with low and anti-foaming...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2100 (EO/PO block copolymer)
ROKAmer®2330 (EO/PO block copolymer) ROKAmer 2330 belongs to the group of nonionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). ROKAmer 2330 is one of the low-foaming and anti-foaming...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2330 (EO/PO block copolymer)
ROKAmer®2400 (EO/PO block copolymer) ROKAmer 2400 belongs to the group of non-ionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). ROKAmer 2400 is among products with low-foaming...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2400 (EO/PO block copolymer)
ROKAmer®2600 (EO/PO block copolymer) ROKAmer 2600 belongs to the group of nonionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). ROKAmer 2600 is among those products with anti-foaming...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2600 (EO/PO block copolymer)
ROKAmer®2600S (EO/PO block copolymer) Non-ionic surfactant providing low foaming properties and applied in different types of cleaning and washing preparations, and mainly as the one of ingredients of...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2600S (EO/PO block copolymer)
ROKAmer®2950 (EO/PO block copolymer) ROKAmer 2950 belongs to the group of nonionic block copolymers of ethylene oxide and propylene oxide (ROKAmers). ROKAmer 2950 is one of the products with low-foaming...
Composition
EO/PO block copolymers
CAS No.
9003-11-6
ROKAmer®2950 (EO/PO block copolymer)
ROKAmer®330 (Nitrilotriethanol, propoxylated) Used mainly as an ingredient of rigid polyurethane foams.
Composition
Alkoxylated alcohols, EO/PO block copolymers
CAS No.
37208-53-0
ROKAmer®330 (Nitrilotriethanol, propoxylated)
ROKAmer®ED44 (EO/PO block copolymer based on ethylenediamine) ROKAmer ED44 is a non-ionic surfactant that belongs to the group of block copolymers of ethylene oxide and propylene oxide, based on alkoxylated ethylenediamine....
Composition
EO/PO block copolymers based on ethylenediamine
CAS No.
26316-40-5
ROKAmer®ED44  (EO/PO block copolymer based on ethylenediamine)
ROKAmer®ED57 (EO/PO block copolymer based on ethylenediamine) ROKAmer ED57 is a non-ionic surfactant that belongs to the group of block copolymers of ethylene oxide and propylene oxide, based on alkoxylated ethylenediamine....
Composition
EO/PO block copolymers based on ethylenediamine
CAS No.
26316-40-5
ROKAmer®ED57  (EO/PO block copolymer based on ethylenediamine)
ROKAnol®B2 (C16-18 alcohol, ethoxylated propoxylated) Rokanol B2 belongs to non-ionic surfactants from the ethoxylated fatty alcohols group. The product is a high molecular weight polymer based on alcohol of vegetable...
Composition
Alkoxylated alcohols
CAS No.
68002-96-0
ROKAnol®B2   (C16-18 alcohol, ethoxylated propoxylated)
ROKAnol®RZ4P11 (C16-18 alcohol, ethoxylated, propoxylated) ROKAnol® RZ4P11 belongs to non-ionic surfactants (alkoxylated fatty alcohols). The product is a high molecular polymer based on alcohol of plant origin. It is a...
Composition
Alkoxylated alcohols
CAS No.
68002-96-0
ROKAnol®RZ4P11  (C16-18 alcohol, ethoxylated, propoxylated)
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Demulsifiers are substances used to separate emulsions.

Usually they are surfactants or surfactant mixtures in a suitable solvent system. These are special additives for the separation of water-in-oil or oil-in-water emulsions. For this reason, they can be used, among other things, in crude oil pre-treatment, which usually contains certain amounts of water.

Demulsifiers work quickly and efficiently. They reduce the intermolecular forces of separated water droplets by modifying the surface tension and polarizing interfacial charge. Demulsifier molecules contact the surface of the emulsified water droplet and the surrounding oil layer. Then demulsifier destroys the surface layer between the oil phase and the water phase, which causes the water molecules to join and gravitate towards the bottom of the tank. Then the water droplets combined form a layer, making it easier to separate the water and oil phases from each other. Demulsifier will produce the expected results when its molecules reach all the water-oil points of contact. Demulsifiers should be soluble in water or a carrier solvent. In addition, they shall be effective over a wide range of pH and temperature ranges and shall be resistant to oxidising and reducing agents.

Demulsifiers are used, among others, in the pulp and paper industry, metal working, tanning, textile and oil industry.