Hydrogenated Castor Oil Isostearate

INCI: HYDROGENATED CASTOR OIL ISOSTEARATE

CAS Number
533910-01-9
Function
Cosmetic ingredient (emollient, viscosity regulator); used at ≤15% in products
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted — no CFR restriction; not CIR-reviewed but full OECD tox package available

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Slightly irritating to skin and eyes (sub-threshold for GHS classification); MoE drops to 57 if aerosol spray use is included — aerosol spray use should be excluded or concentration-limited.

⚠️
Concern Level: Moderate

Regulatory Flags

plant-oil

Frequently Asked Questions

Is Hydrogenated Castor Oil Isostearate safe in cosmetics?

Slightly irritating to skin and eyes (sub-threshold for GHS classification); MoE drops to 57 if aerosol spray use is included — aerosol spray use should be excluded or concentration-limited. The EU classifies Hydrogenated Castor Oil Isostearate as "permitted". Safety rating: GOOD.

Is Hydrogenated Castor Oil Isostearate allowed in the EU?

Hydrogenated Castor Oil Isostearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Hydrogenated Castor Oil Isostearate do in cosmetics?

Hydrogenated Castor Oil Isostearate functions as: Cosmetic ingredient (emollient, viscosity regulator); used at ≤15% in products. It is classified as a cosmetic ingredient in our database. CAS number: 533910-01-9.

What is the Margin of Safety for Hydrogenated Castor Oil Isostearate?

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.

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