D

Dermal Toxicity

flux = Kp × C_skin
Quick Reference
Formula / Notationflux = Kp × C_skin
Also Known AsSkin absorption toxicity, percutaneous toxicity, contact toxicity, topical toxicity

What is Dermal Toxicity?

The capacity of a substance to cause harmful effects when it contacts or penetrates the skin. Dermal toxicity assessments evaluate skin irritation, sensitization, and systemic toxicity from skin absorption. It is an important factor in occupational safety and product safety evaluation.

Formula & Notation

flux = Kp × C_skin

Other Names / Synonyms: Skin absorption toxicity, percutaneous toxicity, contact toxicity, topical toxicity

Properties & Characteristics

Dermal toxicity refers to the adverse health effects caused by a chemical absorbed through the skin (percutaneous absorption), or by direct skin contact. The skin is a barrier but is permeable to many organic solvents, organophosphates, and lipophilic compounds. Damage can be local (irritation, corrosion, allergy) or systemic (absorbed into bloodstream). Log P (octanol-water partition coefficient) predicts skin permeability.

Uses & Applications

Dermal toxicity data is used to set occupational exposure limits (dermal OELs), to design skin-protective PPE, in transdermal drug delivery (nicotine patches, hormone patches exploit controlled percutaneous absorption), and in cosmetic and pesticide safety assessment.

Safety Information

For chemicals with significant dermal absorption (e.g., organophosphate pesticides, dimethyl sulfoxide DMSO, hydrofluoric acid), gloves alone may be insufficient — full protective clothing is required. Dermal LD₅₀ values guide hazard classification. Skin exposure must be minimised for Category 1 dermal sensitisers.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Dermal Toxicity
Formula flux = Kp × C_skin
Synonyms Skin absorption toxicity, percutaneous toxicity, contact toxicity, topical toxicity

Frequently Asked Questions

The capacity of a substance to cause harmful effects when it contacts or penetrates the skin. Dermal toxicity assessments evaluate skin irritation, sensitization, and systemic toxicity from skin absorption. It is an important factor in occupational safety and product safety evaluation.

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