A flammable solid would fall into Division 4.1
flammable solid
A hazardous material that is a flammable solid is classified in Division 4.1
flammable solid
Division 4.1 is for flammable solids.
Flammable Solid
Division 4.1 is for flammable solids. The 4.1 Hazard warning label is used on the outside of packages intended for shipping materials that meet the definition of a flammable solid. These will be things like magnesium and aluminum dust, but not wooden planks.
Class 1 - ExplosivesClass 2, Division 1 - Flammable gasClass 2, Division 2 - Non-flammable, non-toxic, non-poisonus gasClass 2, Division 3 - Poisonus gasClass 3 - Flammable Liquid - tolueneClass 4, Division 1 - Flammable solidClass 4, Division 2 - Spontaneiously combustible materialClass 4, Division 3 - Dangerous when wet materialClass 5 - Oxidizers and Organic PeroxidesClass 6, Division 1 - Poisonous - ArsenicClass 6, Division 2 - Infectious Agents - AnthraxClass 7 - Radioactive materials - Uranium hexafluorideClass 8 - Corrosives - Sulfuric acidClass 9 - Miscellaneous Hazardous Materials - Solid Caron Dioxide (Dry Ice)
Flammable solids are classified as Class 4 in the Hazardous Materials Regulations. This class includes materials that can easily ignite and burn, such as certain metals, sulfur, and some organic compounds. They are further divided into three divisions: Division 4.1 for flammable solids, Division 4.2 for substances that are spontaneously combustible, and Division 4.3 for materials that emit flammable gases when in contact with water. Proper handling and storage are crucial to minimize fire hazards associated with these materials.
Phosphorus is classified as a DOT Hazard Class 4.2, which designates it as a flammable solid. Specifically, it is categorized as a spontaneous combustible material, meaning it can ignite spontaneously in air under certain conditions. Proper precautions and safe handling are essential when transporting or storing phosphorus due to its reactive nature.
There are a number of chemicals that are very flammable. Some are even explosive. That makes it hard to pick one. Volatile substances that have light molecules are probably the most flammable, and there are a number of things that could compete for the title "most flammable" or something similar.
Area classification is an engineering study that defines the regions where an explosive atmosphere can occur. It is done considering the flammable substances' characteristics, the process' pressure, flow and temperature, and ventilation aspects. Where the possibility of an explosive atmosphere is related with the normal operation of the plant, the place is "Zone 1"; if the possibility is only related to abnormal operations, the place is "Zone 2"; if a continuous emission of flammable atmosphere occurs, the place is classified as "Zone 0" , as defined by IEC 60079-10 standard. In the US, a hazardous area resulting from a gas is Class 1 and resulting from a solid particle or dust is Class 2. If the hazard may be present during normal operations it is Division 1; during abnormal conditions only, it is Division 2.
A flammable solid is classified as a material that can readily catch fire and burn when exposed to a heat source. These solids can ignite spontaneously and pose a fire hazard if not stored and handled properly.