Dimethylol Ethylene Thiourea

INCI: DIMETHYLOL ETHYLENE THIOUREA

CAS Number
15534-95-9
Function
Antimicrobial preservative, hair conditioning
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Permitted under current CFR; however, formaldehyde-releaser classification may subject it to upcoming FDA/state-level bans (Washington State already banned formaldehyde releasers).

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Formaldehyde donor requiring labeling if free formaldehyde โ‰ฅ10 ppm per EU 2022/1181; thiourea derivatives raise thyroid disruptor concerns; regulatory trend globally toward phase-out of formaldehyde releasers.

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Concern Level: Moderate

Regulatory Flags

preservative eu_cosing_listed

Frequently Asked Questions

Is Dimethylol Ethylene Thiourea safe in cosmetics?

Formaldehyde donor requiring labeling if free formaldehyde โ‰ฅ10 ppm per EU 2022/1181; thiourea derivatives raise thyroid disruptor concerns; regulatory trend globally toward phase-out of formaldehyde releasers. The EU classifies Dimethylol Ethylene Thiourea as "prohibited". Safety rating: MODERATE.

Is Dimethylol Ethylene Thiourea allowed in the EU?

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

What does Dimethylol Ethylene Thiourea do in cosmetics?

Dimethylol Ethylene Thiourea functions as: Antimicrobial preservative, hair conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 15534-95-9.

What is the Margin of Safety for Dimethylol Ethylene Thiourea?

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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