materials ignite spontaneously in air. Since a wide variety of chemicals will burn if heated sufficiently, it is usual to define a pyrophoric material as one which will ignite spontaneously at temperatures below about 45 C. Reproductive Toxin, such as vinyl chloride or PCBs, is a chemical which may cause birth defects or sterility. Risk phrases, coded in the form R34, R61 etc are now included in MSDS sheets for chemicals purchased in the UK. Sensitizer is a chemical which may lead to the development of allergic reactions after repeated exposure. STEL (Short Term Exposure Limit) is the maximum permissible concentration of a material, generally expressed in ppm in air, for a defined short period of time (typically 5 minutes). These values, which may differ from country to country, are often backed up by regulation and therefore may be legally enforceable.
Describes materials that ignite spontaneously in air below 54ºC (130°F).| Search | Help | Comments | Home(empty)| Search | Help | Comments | Home
Any solid or liquid that has the property of spontaneous ignition in air.
This term denotes a substance that ignites in air at or below room temperature without supply of heat, friction or shock. To Top
Pyrophoric liquids are any liquids that ignite spontaneously in dry or moist air at or below 54.4 degrees Centigrade (130 degrees Fahrenheit). A pyrophoric solid is any solid material, other than one classed as an explosive, which under normal conditions is liable to cause fires through friction, retained heat from manufacturing or processing, or which can be ignited readily and when ignited burns so vigorously and persistently as to create a serious transportation, handling, or disposal hazard. Included are spontaneously combustible and water-reactive materials.
A chemical substance or mixture that will ignite spontaneously in dry or moist air below 130º Fahrenheit.
A chemical that will ignite spontaneously in air at a temperature less than or equal to 54.4°C (130°F).
A chemical that will ignite spontaneously in air at a temperature of 130°F (54.4°C) or below.
Materials that ignite spontaneously in air below 130•F (54•C).