Trichloroethane

INCI: TRICHLOROETHANE

CAS Number
71-55-6 (1,1,1-Trichloroethane) / 79-00-5 (1,1,2-Trichloroethane)
Function
Solvent (historically); degreasing agent
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Not permitted in cosmetics; classified as toxic chlorinated solvent; EPA-regulated substance; ozone-depleting substance (Montreal Protocol)

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

๐Ÿšซ DO NOT USE. Ozone-depleting substance (banned under Montreal Protocol); CNS depressant; cardiac sensitizer (arrhythmias); hepatotoxic; classified CMR suspect; prohibited in virtually all cosmetic regulatory frameworks globally. Any presence in a formulation would constitute a critical regulatory violation.

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Concern Level: High

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Trichloroethane safe in cosmetics?

๐Ÿšซ DO NOT USE. Ozone-depleting substance (banned under Montreal Protocol); CNS depressant; cardiac sensitizer (arrhythmias); hepatotoxic; classified CMR suspect; prohibited in virtually all cosmetic regulatory frameworks globally. Any presence in a formulation would constitute a critical regulatory violation. The EU classifies Trichloroethane as "prohibited". Safety rating: POOR.

Is Trichloroethane allowed in the EU?

Trichloroethane EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Trichloroethane do in cosmetics?

Trichloroethane functions as: Solvent (historically); degreasing agent. It is classified as a cosmetic ingredient in our database. CAS number: 71-55-6 (1,1,1-Trichloroethane) / 79-00-5 (1,1,2-Trichloroethane).

What is the Margin of Safety for Trichloroethane?

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.

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