Ceteareth-5 Phosphate

INCI: CETEARETH-5 PHOSPHATE

CAS Number
Not individually assigned in CosIng (analogous to Ceteareth-4 Phosphate chemistry)
Function
Surfactant – emulsifying; cleansing (by structural analogy to Ceteareth-4 Phosphate)
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status restricted
🇺🇸 US Status permitted
US Notes Not individually CIR-reviewed; supported by analogue read-across

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-dioxane residue and very limited standalone safety data; CPSR justification needed; supplier CoA recommended for 1,4-dioxane and heavy metals

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Ceteareth-5 Phosphate safe in cosmetics?

1,4-dioxane residue and very limited standalone safety data; CPSR justification needed; supplier CoA recommended for 1,4-dioxane and heavy metals The EU classifies Ceteareth-5 Phosphate as "restricted". Safety rating: MODERATE.

Is Ceteareth-5 Phosphate allowed in the EU?

Ceteareth-5 Phosphate EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Ceteareth-5 Phosphate do in cosmetics?

Ceteareth-5 Phosphate functions as: Surfactant – emulsifying; cleansing (by structural analogy to Ceteareth-4 Phosphate). It is classified as a cosmetic ingredient in our database. CAS number: Not individually assigned in CosIng (analogous to Ceteareth-4 Phosphate chemistry).

What is the Margin of Safety for Ceteareth-5 Phosphate?

not established 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.

📱

Is Ceteareth-5 Phosphate in Your Products?

Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free →

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Ceteareth-5 Phosphate in your formulation.