Sodium Oleyl Sulfate is an anionic fatty alcohol sulfate surfactant used in cosmetic and personal-care formulations for cleansing, foaming and surface-active applications. It is the sodium salt of oleyl sulfate and contains a characteristic unsaturated C18 hydrocarbon chain. The defined chemical identity is sodium (9Z)-octadec-9-en-1-yl sulfate.
Sodium Oleyl Sulfate has an amphiphilic molecular structure, consisting of a hydrophobic oleyl chain and a hydrophilic sulfate group. This structure enables the ingredient to participate in surface-active processes and makes it suitable for formulation systems where cleansing, foaming, wetting and emulsifying functionality is required.
In cosmetic formulations, Sodium Oleyl Sulfate can be considered for selected rinse-off products and other surfactant-based systems. Its use and performance depend on the commercial grade, concentration, formulation composition, pH, processing conditions and compatibility with other ingredients.
Sodium Oleyl Sulfate is a sodium salt of oleyl sulfate and belongs to the fatty alcohol sulfate family. Its characteristic oleyl group contains 18 carbon atoms and one carbon-carbon double bond. FDA's substance record identifies its molecular formula as C18H35NaO4S and molecular weight as 370.52 g/mol.
The ingredient is structurally different from saturated C18 fatty alcohol sulfates such as Sodium Stearyl Sulfate because the oleyl chain contains a characteristic double bond.
The cosmetic functions of Sodium Oleyl Sulfate include cleansing and foaming, with surfactant-cleansing and surfactant-emulsifying functions also documented.
Sodium Oleyl Sulfate is chemically associated with 9-octadecen-1-ol, hydrogen sulfate, sodium salt, with the characteristic Z configuration. FDA records list synonyms including Oleyl Sodium Sulfate and Sodium Oleyl Alcohol Sulfate.
The characteristic structure of Sodium Oleyl Sulfate contains:
The FDA record gives the molecular structure and confirms the C18H35NaO4S formula and 370.52 molecular weight.
| Structural Feature | Description |
|---|---|
| Hydrophobic portion | C18 oleyl-derived chain |
| Hydrophilic portion | Sulfate group |
| Counter-ion | Sodium |
| Carbon atoms | 18 |
| Unsaturation | One characteristic C=C bond |
| Surfactant class | Anionic fatty alcohol sulfate |
Sodium Oleyl Sulfate is an anionic surfactant. Its amphiphilic structure allows it to interact with water and oily materials and to participate in interfacial processes.
Potential formulation functions include:
The cosmetic ingredient literature specifically documents cleansing, foaming and surfactant functions for Sodium Oleyl Sulfate.
Sodium Oleyl Sulfate can function as a cleansing surfactant in suitable cosmetic formulations.
Surfactants can assist the interaction between water and oily or particulate materials, allowing those materials to become dispersed during the washing process.
Potential applications include:
The final cleansing performance depends on the complete formulation rather than the ingredient alone.
Sodium Oleyl Sulfate can contribute to foam formation in suitable aqueous surfactant systems.
Potential applications include:
Foam performance can vary according to:
Sodium Oleyl Sulfate can act as a surface-active cleansing ingredient.
Its molecular structure allows it to participate at interfaces between water and hydrophobic materials, supporting cleansing-system development.
This makes it relevant to formulations where cleansing and surfactant functionality are required.
Sodium Oleyl Sulfate is also documented with a surfactant-emulsifying function.
In appropriate formulation systems, surfactants can assist the formation and stabilization of finely dispersed oil-and-water systems. The actual emulsification performance depends on the complete formulation and the selected processing conditions.
Sodium Oleyl Sulfate can be evaluated as an anionic surfactant in selected shampoo formulations.
Potential applications include:
It may be formulated with compatible surfactants and conditioning ingredients depending on the desired product characteristics.
Important development parameters include:
Sodium Oleyl Sulfate can be evaluated for selected rinse-off facial cleansing products.
Potential applications include:
The final formulation should be evaluated for its intended skin-contact application, including pH, cleansing characteristics, foam, sensory properties and formulation stability.
Sodium Oleyl Sulfate can be considered for suitable body-cleansing formulations.
Potential applications include:
Potential personal-care applications include:
When evaluating Sodium Oleyl Sulfate, formulators may consider:
The actual acceptance criteria should come from the specification of the selected commercial grade.
A general formulation-development approach may include:
Actual manufacturing conditions should be established using the technical specification of the commercial material.
Recommended storage considerations for a commercial cosmetic raw material include:
For commercial procurement and quality evaluation, the following parameters may be considered:
The exact testing requirements depend on the grade and intended application.
Sodium Oleyl Sulfate is an anionic fatty alcohol sulfate used in selected cosmetic and personal-care formulations.
For commercial sourcing, manufacturers and formulators can evaluate the ingredient based on:
When sourcing Sodium Oleyl Sulfate, buyers may consider:
For bulk procurement, the required specification should be confirmed before commercial supply.
Important procurement information may include:
Sodium Oleyl Sulfate is an anionic fatty alcohol sulfate surfactant used in cosmetic formulations for cleansing, foaming and other surfactant applications.
The INCI name is Sodium Oleyl Sulfate.
The primary CAS number is 1847-55-8.
The molecular formula is C18H35NaO4S.
The molecular weight is 370.52 g/mol.
It is an anionic fatty alcohol sulfate surfactant.
The characteristic oleyl chain contains 18 carbon atoms.
No. The characteristic oleyl structure contains one carbon-carbon double bond.
Documented cosmetic functions include:
It can be evaluated for suitable rinse-off shampoo and hair-cleansing formulations.
It can be considered for selected rinse-off facial cleansing formulations.
It can be considered for suitable rinse-off body-cleansing formulations.
No. Sodium Oleyl Sulfate has an unsaturated C18 chain, while Sodium Stearyl Sulfate has a saturated C18 chain.
No. Sodium Lauryl Sulfate has a saturated C12 chain, while Sodium Oleyl Sulfate has an unsaturated C18 chain.
| Parameter | Specification |
|---|---|
| Appearance | Creamy white to pale yellow |