Cocamidopropyl hydroxysultaine

Catalog NumberHG68139300

CAS Number68139-30-0

CategoryAmphoteric Surfactants

Synonyms

1-Propanaminium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-, N-coco acyl derivs., hydroxides, inner salts;1-Propanaminium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-, N-coco acyl derivs., inner salts

Appearance

Liquid

Application

Use as emulsifying agent, dispersing agent.; Use as foaming agent, foam stabilizingagent.; Use as antistatic agent.; Use as thickening agent.; Use as anticorrosive agent.

Active Content

30%

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Case Study

Enhanced Stabilization of CO2-in-Brine Foams Using Cocamidopropyl Hydroxysultaine

Creatto, E. J., et al. Journal of Molecular Liquids 329 (2021): 115614.

This work examined the application of cocamidopropyl hydroxysultaine (CAHS), a zwitterionic surfactant, in combination with an anionic surfactant (sodium dodecyl sulfate, SDS) to improve the stability of CO2 foams in high-salinity brine environments. The focus is on foam performance under challenging conditions relevant to enhanced oil recovery (EOR) and carbon capture and storage (CCS).
Methodology: Surfactant formulations containing 1 wt% total surfactant were evaluated, with particular emphasis on a 2:1 mixture of CAHS to SDS. Foam stability was assessed through measurements of drainage rate, coarsening behavior, and half-life. Bulk phase viscosity was characterized using rheological measurements, and surfactant aggregate size was determined via dynamic light scattering (DLS). Gas fraction within the foam was also quantified.
Key Results:
· The CAHS-SDS mixture (2:1 ratio) produced a CO2-foam with a half-life four times longer than foams generated using individual surfactants at the same concentration.
· Bulk phase viscosity increased by four orders of magnitude due to the formation of large surfactant aggregates, significantly reducing drainage and coarsening.
· Foams formulated with the CAHS-SDS mixture encapsulated high volumes of CO2, reaching 83-88% gas fraction per volume of aqueous phase.
· The zwitterionic nature of CAHS contributed to viscoelastic and shear-thinning properties in the continuous phase, enhancing foam durability.

Synergistic Interaction of Cocamidopropyl Hydroxysultaine in Mixed Surfactant Systems with Alcohol Additives

Deng, Zi Peng, et al. Colloids and Surfaces A: physicochemical and Engineering Aspects 693 (2024): 134059.

This study explored the synergistic performance of Cocamidopropyl Hydroxysultaine (CAHS), a zwitterionic surfactant, when mixed with an amino sulfonate amphoteric surfactant (DES) in aqueous solutions containing alcohols. The study focused on micellization behavior and intermolecular interactions to evaluate the potential benefits of CAHS-containing mixtures in practical applications.
Methodology: The micellization of CAHS and DES mixtures was investigated in both water-glycerol and water-glycol solutions using tensiometry and conductometry. Thermodynamic and micellar parameters were analyzed using established models including Rubingh's, Rodenas', and Clint's models within the framework of regular solution theory and the pseudophase separation approach.
Key Findings:
· Strong synergistic interactions between CAHS and DES were observed across all mixing ratios, resulting in a lower mixed critical micelle concentration (cmc) compared to individual surfactants.
· The nonideal mixing behavior was influenced by multiple factors including hydrophobic interactions, molecular conformation compatibility, steric hindrance, weak electrostatic repulsion, dipole interactions, and hydrogen bonding.
· The addition of glycol partially hindered the micellization process compared to glycerol.
· Thermodynamic analysis revealed that entropy is the primary driver of spontaneous micelle formation. The presence of glycol increased the entropic contribution but overall disfavored micellization compared to glycerol.
· The systems exhibited symmetric dependence of free energy change and entropy share around a mixing ratio of 0.5.

• Synonyms: 1-Propanaminium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-, N-coco acyl derivs., hydroxides, inner salts;1-Propanaminium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-, N-coco acyl derivs., inner salts
• Appearance: Liquid
• Application: Use as emulsifying agent, dispersing agent.; Use as foaming agent, foam stabilizingagent.; Use as antistatic agent.; Use as thickening agent.; Use as anticorrosive agent.
• Active Content: 30%