Poor Cosmetic Ingredient NOAEL Data GHS Classified

Thiram

INCI: THIRAM (TETRAMETHYLTHIURAM DISULFIDE) โ€” NO COSMETIC INCI ASSIGNMENT

CAS Number
137-26-8
Function
Fungicide / pesticide (agricultural use); rubber vulcanization accelerator
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Not permitted in cosmetics; EPA-regulated pesticide. FDA would consider adulterated if found in cosmetic products

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.

Toxicological Studies

8 study endpoints found for Thiram. 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 300 mg/kg bw/day dermal code:3484 dermal REACH
LOAEL 300 ppm oral mouse oral REACH
NOAEL 30 ppm oral rat oral REACH
NOAEL 30 ppm oral dog oral REACH
NOAEL 75 ppm oral dog oral REACH
NOAEL 50 ppm oral rat oral REACH
NOAEL 125 ppm oral dog oral REACH
NOAEL 1000 mg/kg bw/day oral rat oral REACH

GHS Hazard Classification

Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.

Short-term Exposure Effects
The substance is irritating to the eyes, skin and respiratory tract.
Long-term Exposure Effects
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the thyroid and liver.
Routes of Exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

Expert Verdict

CMR concerns (reproductive toxicity); strong skin sensitizer; prohibited substance in EU cosmetics; banned pesticide in EU since 2019

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Concern Level: High

Regulatory Flags

potential-allergen endocrine_disruptor

Frequently Asked Questions

Is Thiram safe in cosmetics?

CMR concerns (reproductive toxicity); strong skin sensitizer; prohibited substance in EU cosmetics; banned pesticide in EU since 2019 The EU classifies Thiram as "prohibited". Safety rating: POOR. 8 toxicological study endpoint(s) are available in our database.

Is Thiram allowed in the EU?

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

What does Thiram do in cosmetics?

Thiram functions as: Fungicide / pesticide (agricultural use); rubber vulcanization accelerator. It is classified as a cosmetic ingredient in our database. CAS number: 137-26-8.

What is the Margin of Safety for Thiram?

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 Thiram?

The NOAEL (No Observed Adverse Effect Level) for Thiram is 300 mg/kg bw/day based on a dermal study via dermal route in code:3484. A total of 8 study endpoints are available. Source: REACH.

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