nietontvlambare

Nietontvlambare is a Dutch term meaning non-flammable. It is used to describe substances that do not ignite easily or sustain combustion under normal conditions. In Dutch safety language, the term appears on product labels, risk assessments, and safety data sheets (SDS) to indicate that a material is not considered flammable. The spelling may be niet ontvlambaar or niet-ontvlambaar depending on grammatical usage.

How it is determined varies with flammability criteria such as flash point and ignition temperature. A substance may be deemed niet ontvlambaar if it lacks a flammable range in air, has a very high flash point, or does not support combustion under standard test conditions. Regulations differ by country, and labeling often aligns with international conventions, including EU or other regional classifications.

Limitations should be noted: non-flammable does not imply overall safety. Such materials can still be reactive, oxidizing, explosive, or toxic, and they can pose other hazards. Some substances may ignite only under specific conditions, such as when finely divided as dust or in the presence of strong accelerants.

Examples commonly described as niet ontvlambare include water, concrete, glass, many inorganic salts, and most bulk metals. By contrast, many organic solvents and fuels are flammable. Understanding a material’s flammability status requires consulting its safety data sheet and following local regulatory guidelines.