Setting surface wipe limits for skin sensitizers

Area of Science:

• Toxicology
• Occupational Health
• Industrial Hygiene

Background:

• Historically, managing dermal exposure to skin sensitizers relied on qualitative guidance like DSEN notations.
• Quantitative methods for establishing surface wipe limits for skin sensitizers were lacking.

Purpose of the Study:

• To propose and validate a quantitative method for setting surface wipe guidelines for skin sensitizers.
• To utilize the murine local lymph node assay (LLNA) EC3 values for developing these guidelines.

Main Methods:

• Correlating LLNA EC3 values with human repeat insult patch testing no-effect levels.
• Developing a quantitative method to derive surface wipe limits from LLNA EC3 data.
• Establishing occupational exposure bands and handling guidance based on sensitizer potency.

Main Results:

• A quantitative method for setting surface wipe limits for skin sensitizers was developed.
• The method leverages the quantitative dose-response information from the LLNA EC3 value.
• A table of suggested surface wipe limits (mg/100 cm²) for chemical sensitizers is provided.

Conclusions:

• The proposed quantitative method allows for the establishment and use of surface wipe limits for skin sensitizers.
• These limits support exposure assessment and control strategies within industrial hygiene programs.
• Implementing these guidelines can minimize skin exposure and sensitization risks in the workplace.