Good Cosmetic Ingredient NOAEL Data

Sodium C16-20 Alkyl Sulfate

INCI: SODIUM C16-20 ALKYL SULFATE

CAS Number
91648-55-4
Function
Emulsifier, foaming agent, surfactant (cleansing)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR assessed sodium cetearyl sulfate and related alkyl sulfates as safe in present practices of use and concentration

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

10 study endpoints found for Sodium C16-20 Alkyl Sulfate. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
LOAEL 1.13 other oral rat oral REACH
NOAEL 10 other dermal code:3543 dermal REACH
NOAEL 0.56 other oral - oral REACH
NOAEL 300 mg/kg bw/day oral rat oral REACH
NOAEL >=430 mg/kg bw/day oral rat oral REACH
NOAEL 201.28 mg/kg bw/day oral rat oral REACH
NOAEL 460 mg/kg bw/day oral rat oral REACH
LOEL 1.5 other oral rat oral REACH
NOAEL 512 mg/kg bw/day oral rat oral REACH
NOAEL 482 mg/kg bw/day oral rat oral REACH

Expert Verdict

Like all alkyl sulfates, can be drying/irritating at elevated concentrations. Prolonged skin contact formulations should limit concentrations per SLS-class precedent (โ‰ค1% for extended contact)

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Concern Level: Moderate

Frequently Asked Questions

Is Sodium C16-20 Alkyl Sulfate safe in cosmetics?

Like all alkyl sulfates, can be drying/irritating at elevated concentrations. Prolonged skin contact formulations should limit concentrations per SLS-class precedent (โ‰ค1% for extended contact) The EU classifies Sodium C16-20 Alkyl Sulfate as "permitted". Safety rating: GOOD. 10 toxicological study endpoint(s) are available in our database.

Is Sodium C16-20 Alkyl Sulfate allowed in the EU?

Sodium C16-20 Alkyl Sulfate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Sodium C16-20 Alkyl Sulfate do in cosmetics?

Sodium C16-20 Alkyl Sulfate functions as: Emulsifier, foaming agent, surfactant (cleansing). It is classified as a cosmetic ingredient in our database. CAS number: 91648-55-4.

What is the Margin of Safety for Sodium C16-20 Alkyl Sulfate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

What is the NOAEL for Sodium C16-20 Alkyl Sulfate?

The NOAEL (No Observed Adverse Effect Level) for Sodium C16-20 Alkyl Sulfate is 1.13 other based on a oral study via oral route in rat. A total of 10 study endpoints are available. Source: REACH.

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