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Q&A: Storage of DEF Fuel Additives

Recently, one of our subscribers asked the following question:

Are there any regulations regarding the storage of DEF fuel additives?

This was our answer:

Diesel exhaust fluid (DEF) is a urea-based additive used to meet the EPA’s motor carrier emission standards.

There are no DEF-specific standards for the storage of these products. However, the Agency’s hazard communication standard applies to DEF products. As such, containers of DEF require HazCom labeling that includes at least the identity of the material, appropriate hazard warnings, and the name and address of the manufacturer.

Other regulations that may apply for the handling of DEF products include 29 CFR Part 1910, Subpart I, Personal Protective Equipment, and 29 CFR 1910.1000, Air Contaminants.

This OSHA letter of interpretation offers more information DEF and how HazCom applies.