Toxic 08 : Any material whose properties contain the inherent capacity to produce injury to a biological system, which is dependent on concentration, rate, method, and site of absorption
NFPA 306 Standard for the Control of Gas Hazards on Vessels, 2001 ed. https://www.nfpa.org/assets/files/AboutTheCodes/30 6/306-A2001-ROC.pdf, (Std: Contr of Gas Haz on Vssl - Amer) {294 NFC}