Is C11-15 Pareth-20 safe in cosmetics?
C11-15 Pareth-20 has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
C11-15 Pareth-20
Also known as: Tergitol 15S9, 15S5, 35S7, Pareth 15, SS70 (+1 more)
INCI: C11-15 PARETH-20
C11-15 Pareth-20 (CAS 68131-40-8) is a cosmetic cosmetic ingredient functioning as Surfactant – Emulsifying; Surfactant – Cleansing. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 68131-40-8 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
C11-15 Pareth-20 is classified GHS Danger (H302, H315, H318) in the chemicals database but is allowed in EU cosmetics.
Source: Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
Function
Surfactant – Emulsifying; Surfactant – Cleansing
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Adequate (CIR class assessment)
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for C11-15 Pareth-20.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
Ceased manufacture
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Cleaning agent
Emulsifier
Fragrance
Surfactant (surface active agent)
Regulatory List Membership (2)
IFRA Fragrance Transparency List
EPA Safer Chemical Ingredients List (SCIL)
Expert Verdict
Expert safety assessment and concern-level summary for C11-15 Pareth-20.
Regulatory Flags
epa_safer_alternative
ifra_fragrance
Known Synonyms
Tergitol 15S9
15S5
35S7
Pareth 15
SS70
UNII-71PBH2T61R
Chemical Function
Surfactant (surface active agent)
Emulsifier
Fragrance
Regulatory Lists
Europe; Vehicle - car interior
IFRA Transparency
SCIL (9/2019)
inert_ingredient; Pesticides
inert_ingredient; non_food_use; Pesticides
Cleaning products and household care - laundry and fabric treatment - laundry detergent; Europe
Australian Status
AICIS status: listed
Frequently Asked Questions
Is C11-15 Pareth-20 allowed in the EU?
C11-15 Pareth-20 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does C11-15 Pareth-20 do in cosmetics?
C11-15 Pareth-20 functions as: Surfactant – Emulsifying; Surfactant – Cleansing. It is classified as a cosmetic ingredient in our database. CAS number: 68131-40-8.
Is C11-15 Pareth-20 used outside cosmetics?
C11-15 Pareth-20 also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does C11-15 Pareth-20 have different safety status in cosmetics vs industrial chemicals?
C11-15 Pareth-20 is classified GHS Danger (H302, H315, H318) in the chemicals database but is allowed in EU cosmetics.
Compliance Tools
Check C11-15 Pareth-20 compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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