Syttyvien
Syttyvien is a Finnish term formed from the verb syttyä, meaning to catch fire. In everyday and technical usage, syttyvä describes something that is easily ignited, and syttyvien is the genitive plural form used in phrases like “syttyvien aineiden” to mean “of the flammable substances.” The related noun syttyvyys denotes flammability, the property of being able to ignite.
In Finnish safety language, the phrase syttyviä aineita or syttyviä nesteitä is common on labels, safety data
The term is widely applied in occupational safety, industrial hygiene, and fire safety contexts in Finland.
See also: flammability, fire hazard, hazard classification, safety data sheet, CLP regulation.