Occupational Exposure Limits Database

Occupational exposure limits (OELs) are regulatory values which indicate levels of exposure that are considered to be safe (health-based) for a chemical substance in the air of a workplace.

The OEL database provides core values such as 8-hour TWA (Time-Weighted Average), STEL (Short-Term Exposure Limit), and MAC (Maximum Allowable Concentration) in a single query. Some entries also include warning indicators for carcinogenicity, sensitization, skin absorption, and reproductive toxicity. Checking one substance allows you to clearly understand "whether it can be contacted, how long it can be contacted, and at what concentration it can be contacted."

The OEL database compiles authoritative data from over 40 countries and regions, including China, the EU, the US, Japan, South Korea, Australia, and Canada. This enables companies to instantly look up variations across countries, assess risks, develop control measures, and ensure full legal compliance for their products.