GBZ2.1-2007 - OELs for hazardous chemical agents (CN)
MAC CN (mg/m3) 0.03
H: 220Extremely flammable gas
H: 280Contains gas under pressure; may explode if heated
H: 330Fatal if inhaled.
H: 373May cause damage to organs (state all organs affected, if known) through prolonged or repeated exposure (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) .
H: 410Very toxic to aquatic life with long lasting effects