Description

Sodium hydroxypropyl cyclodextrin octenylsuccinate is a chemically modified form of cyclodextrin. It is created by esterifying hydroxypropyl cyclodextrin with octenylsuccinate, and it is also combined with sodium salts to improve solubility and functionality. This modification enhances the ability of cyclodextrin to form complexes with various active ingredients, improving their stability, solubility, and bioavailability. It is used in a variety of applications, including pharmaceuticals, cosmetics, and food products.

Chemical Composition and Structure

The chemical composition of sodium hydroxypropyl cyclodextrin octenylsuccinate includes:

Cyclodextrin: A cyclic oligosaccharide composed of glucose units.
Hydroxypropyl Groups: Added to improve solubility and stability.
Octenylsuccinate Groups: An ester formed by reacting cyclodextrin with octenyl succinic anhydride.
Sodium Salts: Used to increase solubility in aqueous solutions.

The structure of sodium hydroxypropyl cyclodextrin octenylsuccinate is characterized by:

Cyclodextrin Ring: A cyclic structure made up of six, seven, or eight glucose units.
Hydroxypropyl Substitution: Hydroxypropyl groups attached to the cyclodextrin ring.
Octenylsuccinate Substitution: Ester groups formed with octenyl succinic anhydride.
Sodium Salts: Incorporated to enhance water solubility.

Physical Properties

Sodium hydroxypropyl cyclodextrin octenylsuccinate is typically a white to off-white powder. Its physical properties include:

Boiling Point: Not directly measurable as the compound may decompose before boiling.
Melting Point: Not specifically defined, but it is generally stable as a solid at room temperature.
Solubility: Highly soluble in water due to the presence of sodium salts and the hydroxypropyl and octenylsuccinate modifications.

Production Process

The production process for sodium hydroxypropyl cyclodextrin octenylsuccinate involves:

Modification: Hydroxypropyl cyclodextrin is esterified with octenyl succinic anhydride in the presence of a catalyst.
Addition of Sodium Salts: Sodium salts are added to enhance solubility.
Reaction Conditions: The reaction is conducted under controlled temperature and pH conditions.
Purification: The product is purified through techniques such as filtration, centrifugation, and possibly dialysis to remove impurities and unreacted reagents.
Characterization: The final product is characterized using methods such as chromatography and spectroscopy to ensure purity and confirm structure.

Applications

Sodium hydroxypropyl cyclodextrin octenylsuccinate is used in:

Pharmaceuticals: As a solubilizer and stabilizer for active drug ingredients, enhancing their solubility and bioavailability.
Cosmetics: In skincare and haircare products to improve the stability and release of active ingredients.
Food Industry: As an emulsifier and stabilizer in food products to improve texture and consistency.
Chemical Industry: In formulations requiring improved solubility and stability of various compounds.

Safety

Sodium hydroxypropyl cyclodextrin octenylsuccinate is generally considered safe for use in pharmaceuticals, cosmetics, and food products when used in recommended concentrations. It is important to follow proper guidelines for usage and handling to avoid any adverse effects. Proper storage and handling are essential to maintain the efficacy and safety of the product.

Environmental and Safety Considerations

The production of sodium hydroxypropyl cyclodextrin octenylsuccinate should adhere to environmentally responsible practices to minimize ecological impact. Efficient synthesis and purification methods are crucial to reduce waste and environmental footprint. Accurate labeling and proper handling are necessary to ensure safe and effective use in its various applications.

INCI


Deodorant agent. When substances that give off an unpleasant odour are included in cosmetic formulations (typical examples are methyl mercaptan and hydrogen sulphide derived from garlic), deodorants attenuate or eliminate the unpleasant exhalation. It helps counteract the formation of bad odours on body surfaces.

Emulsion stabiliser. Emulsions are thermodynamically unstable. Emulsion stabilisers improve the formation and stability of single and double emulsions. as well as their shelf-life. It should be noted that in the structure-function relationship, the molar mass of the ingredient used plays an important role.

Humectant. Hygroscopic compound used to minimise water loss in the skin and to prevent it from drying out by facilitating faster and greater absorption of water into the stratum corneum of the epidermis. The epidermis is the most superficial of the three layers that make up human skin (epidermis, dermis and hypodermis) and is the layer that maintains hydration in all three layers. In turn, the epidermis is composed of five layers: horny, the most superficial, granular, spinous, shiny, and basal. Humectants have the ability to retain the water they attract from the air in the stratum corneum and have the function of moisturising the skin. They are best used before emollients, which are oil-based.

Surfactant - Cleansing agent. Cosmetic products used to cleanse the skin utilise the surface-active action that produces a lowering of the surface tension of the stratum corneum, facilitating the removal of dirt and impurities.
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