Moderate Cosmetic Ingredient NOAEL Data

Diiodomethyltolylsulfone

INCI: DIIODOMETHYLTOLYLSULFONE

CAS Number
20018-09-1
Function
Preservative (fungicide); antimicrobial agent approved by CFTA/INCI for cosmetic preservation
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 0.1%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no specific CFR restriction for cosmetics; EPA-registered for industrial use

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

4 study endpoints found for Diiodomethyltolylsulfone. 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 5 mg/kg bw/day oral rat Subchronic COSMOS_DB
LOAEL 20 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 2 mg/kg bw/day oral dog Subchronic COSMOS_DB
LOAEL 10 mg/kg bw/day oral dog Subchronic COSMOS_DB

Expert Verdict

Skin sensitizer (H317) and irritant (H315); causes irreversible eye damage; iodine-releasing agent with extremely low water solubility requiring particulate dispersion for formulation.

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Concern Level: Moderate

Regulatory Flags

potential-allergen preservative

Frequently Asked Questions

Is Diiodomethyltolylsulfone safe in cosmetics?

Skin sensitizer (H317) and irritant (H315); causes irreversible eye damage; iodine-releasing agent with extremely low water solubility requiring particulate dispersion for formulation. The EU classifies Diiodomethyltolylsulfone as "restricted". Safety rating: MODERATE. 4 toxicological study endpoint(s) are available in our database.

Is Diiodomethyltolylsulfone allowed in the EU?

Diiodomethyltolylsulfone EU regulatory status: restricted. Maximum allowed concentration: 0.1%. This is based on EU Regulation 1223/2009 and its amendments.

What does Diiodomethyltolylsulfone do in cosmetics?

Diiodomethyltolylsulfone functions as: Preservative (fungicide); antimicrobial agent approved by CFTA/INCI for cosmetic preservation. It is classified as a cosmetic ingredient in our database. CAS number: 20018-09-1.

What is the Margin of Safety for Diiodomethyltolylsulfone?

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.

What is the NOAEL for Diiodomethyltolylsulfone?

The NOAEL (No Observed Adverse Effect Level) for Diiodomethyltolylsulfone is 5 mg/kg bw/day based on a Subchronic study via oral route in rat. A total of 4 study endpoints are available. Source: COSMOS_DB.

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