Octadecenylsuccinic Anhydride (mixture of isomers) TCI O0013

Chemical Identity

CAS No.: 28777-98-2
PubChem: SID 87574031
Purity: >93.0%(GC)

Rp 1.087.800,00

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Octadecenylsuccinic Anhydride (mixture of isomers) is a cyclic anhydride derived from succinic acid. It carries an 18-carbon alkenyl chain and is supplied as a mixture of isomers that differ in the position of the double bond. It belongs to the alkenyl succinic anhydride family, a group of compounds widely known in surface chemistry. In the laboratory it is used to add water-repellent (hydrophobic) character to polysaccharides, proteins and material surfaces. It is also used as a building block for making surfactants and anhydride-based additives, which is why it sits among the non-heterocyclic building blocks in the TCI range.

Researchers mainly choose this compound because it combines a reactive anhydride ring with a long, strongly water-repellent hydrocarbon chain. The anhydride ring reacts readily with hydroxyl or amine groups to form ester or amide bonds. The same reaction leaves a free carboxyl group, so the modified molecule becomes amphiphilic, with both water-loving and water-repelling parts. The 18-carbon chain gives a strong water-repellent effect to whatever it is attached to. Because it is a mixture of isomers, it tends to be easier to handle than a single isomer. TCI quality control keeps reactivity consistent from batch to batch, so results can be repeated across experiments.

In Indonesia, this material is useful to paper and pulp research laboratories studying water-resistance agents (sizing). It also suits food technology laboratories exploring hydrophobically modified starches and biopolymers, and university chemistry departments working on surface modification and amphiphilic molecule synthesis. Materials science groups developing water-repellent coatings or compatibilized biopolymer composites may also find it useful. AMI Scientific supplies this TCI reagent to support these research and development activities across Indonesian institutions.

Related TCI products

Hydrophobic modification of polysaccharides: the anhydride ring reacts with hydroxyl groups on starch or cellulose, attaching the 18-carbon chain and adding water repellency along with a free carboxyl group.
Paper sizing research: as a member of the alkenyl succinic anhydride family, it suits studies of water-resistance agents for paper and pulp, where its long hydrophobic chain reduces water uptake.
Protein modification: its reaction with amine groups forms amide bonds, so researchers can make proteins amphiphilic and study how this changes emulsifying or interfacial behaviour.
Surfactant synthesis: combining a reactive anhydride with a long hydrocarbon chain makes it a practical building block for amphiphilic molecules with both a polar head and a non-polar tail.
Surface modification of materials: it can graft hydrophobic chains onto hydroxyl- or amine-bearing surfaces, making it useful for developing water-repellent coatings and treating fillers or fibres.

Brand	TCI (product code O0013)
CAS number	28777-98-2
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	available in the pack sizes offered by TCI; please confirm current options with AMI Scientific
Physical form	—
Storage	keep tightly closed in a cool, dry place, protected from moisture

Composition: mixture of isomers (the double bond sits at different positions)

Keep Octadecenylsuccinic Anhydride in its original tightly sealed container, in a cool, dry and well-ventilated area away from direct sunlight and heat. Like other cyclic anhydrides it reacts with water, so protect it from moisture and humid air to preserve its reactivity. Close the container promptly after each use, and consider storing it with a desiccant. Keep it away from strong bases, amines, alcohols and oxidizing agents, except when these are intended for a reaction. Wear suitable gloves, safety glasses and a lab coat when handling, and work in a fume hood or well-ventilated area. Avoid contact with skin and eyes. Always read the TCI Safety Data Sheet before use, and dispose of waste according to local regulations.

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