What you need to know about the composition of surfactants

May 18,2021



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Surfactant refers to a substance that can significantly reduce the surface tension of the target solution. It has fixed hydrophilic and lipophilic groups, which can be aligned on the surface of the solution.


The molecular structure of surfactants is amphiphilic: one end is a hydrophilic group, the other end is a hydrophobic group; the hydrophilic group is often a polar group, such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amine groups and their salts , Hydroxyl group, amide group, ether bond, etc. can also be used as polar hydrophilic groups; while hydrophobic groups are often non-polar hydrocarbon chains, such as hydrocarbon chains with more than 8 carbon atoms. Surfactants are divided into ionic surfactants (including cationic surfactants and anionic surfactants), nonionic surfactants, compound surfactants, amphoteric surfactants, and other surfactants.


Some organosilicon surfactants can greatly reduce the surface tension of water, which allows the organosilicon solution to easily wet almost all types of foliage. Compared with traditional additives, it significantly improves the coverage of target organisms. Silicone additives have strong resistance to water erosion and penetration.


Tridecyl alcohol


Also known as n-tridecyl alcohol. Also known as tridecyl alcohol, white crystals with a pleasant smell. Insoluble in water, soluble in ethanol and ether. Dodecene can be obtained by tetramerization of propylene, tridecyl alcohol can be synthesized by oxo, and the product can be obtained after separation. It can be used to produce various types of surfactants, and can also be used to produce antistatic agents.


Wide range of uses


He has a very wide range of uses. It can be used as raw material for various solvents such as common lubricants, pesticides, surfactants, inks, etc. Used as a raw material for phthalates; stabilizers for phosphites, lubricant additives; raw materials for acrylic acid and acrylic esters; penetrants and detergents; ink additives; paint viscosity modifiers; extractants; general solvents; plasticizers The raw material of DTDP; the raw material of non-ionic and cationic surfactants.


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Storage and transportation method


Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. Avoid direct sunlight. The packaging must be sealed and protected from moisture. should be kept away from oxidizer, do not store together. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials.


H·L·B value


For surfactants to exhibit unique interfacial activity, there must be a certain balance between hydrophobic and hydrophilic groups. Hydrophile-Lipophile Balance (Hydrophile-Lipophile Balance), referred to as HLB value, represents the hydrophilic and hydrophobic properties of surfactants, such as paraffin HLB value = 0 (no hydrophilic group) polyethylene glycol HLB value = 20 (complete affinity water). For anionic surfactants, the HLB value can be determined by emulsifying a standard oil.


HLB value 15~18 13~15 8~16 7~9 3.5~6 1.5~3
Use Solubilizers Detergent Oil/water emulsifier D Water/oil emulsifier Defoamer


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