Is Stearyl Stearate safe in cosmetics?
Stearyl Stearate has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted. 1 toxicological study endpoint(s) are available in our database.
Stearyl Stearate
Also known as: Octadecanoic acid, octadecyl ester, 1-Octadecyl octadecanoate, Amleps SS, Amreps SS, Brian DPS 60 (+15 more)
INCI: STEARYL STEARATE
Stearyl Stearate (CAS 2778-96-3) is a cosmetic emollient functioning as Skin Conditioning (Occlusive), Emollient. NOAEL 1000 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); 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 2778-96-3 →
Auto-generated CPSR Part A draft with source citations
Function
Skin Conditioning (Occlusive), Emollient
Safety Rating
EXCELLENT
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not restricted
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Stearyl Stearate.
Calculate MoS for your specific formulation with the MoS Calculator.
Toxicological Studies
1 study endpoint found for Stearyl Stearate. 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 |
|---|---|---|---|---|---|
| NOAEL | =1000 mg/kg bw/day | oral | Rat | reproduction developmental | ToxValDB_ECHA_IUCLID |
Pre-Calculated Safety Assessment
Pre-calculated NOAEL → SED → MoS audit trail for Stearyl Stearate across SCCS product categories, with measured dermal absorption where available.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
10 - 100 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Additional Ingredient Properties
3 property records from structured ingredient metadata.
comedogenicity_detail
{"comedogenicity_rating": "3", "irritancy_rating": "1", "skin_type_suitability": "dry,combination", "acne_safe": "caution", "source": "Cosmetic formulation"}
cost_pricing
{"cost_tier": "mid-range", "estimated_cost_per_kg_usd_low": "18", "estimated_cost_per_kg_usd_high": "32", "natural_premium_markup_pct": "0", "organic_certified_premium_pct": "0", "supply_chain_volatility": "low", "primary_source_region": "Global", "bulk_discount_threshold_kg": "150", "seasonal_price_variation": "low", "commodity_or_specialty": "specialty", "substitute_ingredients": "Cetyl Esters",…
emulsion_hlb
{"hlb_required_as_emulsifier": "no", "hlb_required_of_oil_phase": "10", "co_emulsifier_pairs": "polysorbate_60,steareth_20", "optimal_oil_phase_pct": "15-40", "optimal_water_phase_pct": "60-85", "droplet_size_range_um": "5-45", "creaming_resistance": "moderate", "coalescence_resistance": "excellent", "ostwald_ripening_resistance": "excellent", "freeze_thaw_stability": "excellent", "rheology_modifi…
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Humectant
Lubricating agent
Softener and conditioner
Thickening agent
Viscosity modifier
Regulatory List Membership (1)
FDA Indirect Food Contact Additives
Expert Verdict
Expert safety assessment and concern-level summary for Stearyl Stearate.
NOAEL Studies Summary
View details ->Public NOAEL study rows linked to Stearyl Stearate by CAS number or substance name.
Studies
1
Lowest NOAEL
1000 mg/kg bw/day
Highest NOAEL
1000 mg/kg bw/day
ToxValDB_ECHA_IUCLID
Known Synonyms
Octadecanoic acid, octadecyl ester
1-Octadecyl octadecanoate
Amleps SS
Amreps SS
Brian DPS 60
Cosmol 1000
Cyclochem SS
Emalex CC 18
Exceparl SS
FE 78-18
Lexol SS
Loxiol G 30
NJLUB SS
Nissan Electol WEP 2
Nissan Unister 9676M
Nissan Unister M 9676
Nissan Unister M 9796
Octadecyl octadecanoate
Octadecyl stearate
Radia 7501
Chemical Function
Softener and conditioner
Viscosity modifier
Humectant
Thickening agent
Lubricating agent
Regulatory Lists
Indirect additives food contact (10/2018)
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Stearyl Stearate allowed in the EU?
Stearyl Stearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Stearyl Stearate do in cosmetics?
Stearyl Stearate functions as: Skin Conditioning (Occlusive), Emollient. It is classified as a Emollient in our database. CAS number: 2778-96-3.
What is the NOAEL for Stearyl Stearate?
The NOAEL (No Observed Adverse Effect Level) for Stearyl Stearate is =1000 mg/kg bw/day based on a reproduction developmental study via oral route in Rat. Source: ToxValDB_ECHA_IUCLID.
Is Stearyl Stearate used outside cosmetics?
Stearyl Stearate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Stearyl Stearate 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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