N.H. Code Admin. R. Lab 1402.07
“Category III flammable” means a liquid with a flashpoint at or above 73.4 °F and at or below 140 °F. When a category III liquid with a flashpoint at or above 100 °F is heated for use to within 30 °F of its flashpoint, the liquid needs to be handled in accordance with the requirements for a category III liquid with a flashpoint below 100 °F.
Source. #14431, eff 11-22-25, EXPIRES: 11-22-35