Sodium Stearyl Sulfate is an anionic fatty alcohol sulfate surfactant used in selected cosmetic and personal-care formulations for cleansing, foaming, wetting and surface-active functions. It is the sodium salt of stearyl sulfuric acid and contains a saturated C18 fatty alkyl chain together with a sulfate group.
Sodium Stearyl Sulfate belongs to the fatty alcohol sulfate family. Its long, saturated C18 hydrocarbon chain provides the hydrophobic portion of the molecule, while the sulfate group provides the hydrophilic portion. This amphiphilic structure allows the ingredient to function at interfaces and participate in cleansing and surfactant systems.
It can be considered for selected rinse-off cosmetic and personal-care formulations where a long-chain anionic sulfate surfactant is required.
Sodium Stearyl Sulfate is an anionic fatty alcohol sulfate surfactant. It is derived from stearyl alcohol and contains a sulfate ester group with sodium as the counter-ion.
The molecule has a saturated C18 alkyl chain. Compared with Sodium Oleyl Sulfate, which contains an unsaturated C18 chain, Sodium Stearyl Sulfate has no carbon-carbon double bond in its characteristic hydrocarbon chain.
For the defined sodium stearyl sulfate structure, the molecular formula is C18H37NaO4S, with a molecular weight of approximately 396.54 g/mol.
Sodium Stearyl Sulfate contains a hydrophobic saturated C18 alkyl chain and a hydrophilic sulfate group. This amphiphilic structure enables it to interact with aqueous and oily phases and participate in surfactant processes.
Potential formulation functions include:
Sodium Stearyl Sulfate can contribute to cleansing by helping disperse oily and particulate materials in aqueous formulations.
Potential applications include:
Final cleansing performance depends on concentration, formulation pH, water quality, temperature and combination with other surfactants.
Sodium Stearyl Sulfate can contribute to foam formation in suitable cosmetic formulations.
Potential applications include:
Foam characteristics depend on the complete formulation, surfactant concentration, water quality, temperature, pH and presence of co-surfactants.
Sodium Stearyl Sulfate can be evaluated in selected hair-cleansing formulations.
Potential applications include:
It may be combined with other anionic, amphoteric or nonionic surfactants to modify cleansing performance, foam, viscosity and sensory characteristics.
Sodium Stearyl Sulfate can be considered for suitable body-cleansing formulations.
Potential applications include:
Potential personal-care applications include:
Both are C18 fatty alcohol sulfate surfactants, but their hydrocarbon chains differ.
This structural difference can affect the physical behavior of the raw materials and their performance in formulation systems.
Important parameters to evaluate include:
The applicable acceptance criteria should be based on the selected commercial grade.
Typical formulation-development considerations include:
Actual processing conditions should be established according to the physical form and commercial specification.
Sodium Stearyl Sulfate is an anionic fatty alcohol sulfate that can be used in selected cosmetic and personal-care cleansing systems.
For commercial procurement, buyers can evaluate:
When sourcing Sodium Stearyl Sulfate, important procurement parameters may include:
For bulk procurement, the required grade and technical specification should be confirmed before purchase.
Important parameters include:
Sodium Stearyl Sulfate is an anionic fatty alcohol sulfate surfactant used for cleansing, foaming and wetting applications in suitable cosmetic formulations.
The INCI name is Sodium Stearyl Sulfate.
The CAS number is 1120-04-3.
The molecular formula is C18H37NaO4S.
The molecular weight is approximately 396.54 g/mol.
It is an anionic fatty alcohol sulfate surfactant.
The characteristic stearyl chain contains 18 carbon atoms.
Yes. The characteristic stearyl chain is saturated and contains no carbon-carbon double bond.
It can be evaluated for use in suitable rinse-off hair-cleansing formulations.
It can be considered for selected body-cleansing formulations.
No. Both are C18 fatty alcohol sulfate structures, but Sodium Stearyl Sulfate has a saturated C18 chain, while Sodium Oleyl Sulfate has an unsaturated C18 chain.
No. Sodium Lauryl Sulfate is based on a saturated C12 chain, whereas Sodium Stearyl Sulfate is based on a saturated C18 chain.
| Parameter | Specification |
|---|---|
| Appearance | Creamy white to pale yellow |