Pyrophoricity - Wikipedia
A substance is pyrophoric (from Ancient Greek: πυροφόρος, pyrophoros, 'fire-bearing') if it ignites spontaneously in air at or below 54 °C (129 °F) (for gases) or within 5 minutes after coming into contact with air (for liquids and solids). [1]
Know Your Hazard Symbols (Pictograms) | Office of Environmental …
2016年8月22日 · Flame: Flammable materials or substances liable to self ignite when exposed to water or air (pyrophoric), or which emit flammable gas. Flame Exclamation Mark: An immediate skin, eye or respiratory tract irritant, or narcotic.
13 Common Chemical Hazard Signs, Symbols, and Their Meanings
2024年12月17日 · Pyrophoric: Can ignite spontaneously when exposed to air. Self-Heating: Liable to self-heat and ignite without an external heat source. Emits Flammable Gas: In contact with water, releases flammable gases.
GHS Hazard Sign, Symbol & Pictogram Meanings - OSHA.com
2022年8月17日 · There are five GHS symbols used to warn about physical hazards, which are characteristics that can put both property and human safety at risk. The corrosive GHS pictogram represents substances that eat away at a material when they make contact.
Hazardous Materials Symbols and Their Meaning in Chemical ... - Seacole
The flame symbol alerts users that a chemical is flammable. It can also indicate a chemical may be pyrophoric, self-heating, self-reactive, or emit flammable gas. It may also indicate a chemical includes organic peroxides.
black circle. It looks like the circle is on fire. This symbol indicates: • Oxidizers Flame . The red frame around the white diamond contains a white flame within black flames above a black line. This symbol indicates: • Flammables • Pyrophoric • Self-Heating • …
CCOHS: WHMIS - Pictograms - Canadian Centre for Occupational …
Inside this border is a symbol that represents the potential hazard (e.g., fire, health hazard, corrosive, etc.). Together, the symbol and the border are referred to as a pictogram. Pictograms are assigned to specific hazard classes or categories.
PICTOGRAMS AND HAZARD CODES-ChemicalBook
Compared to the current EU system the most noticeable change are the pictograms (formerly: hazard symbols). While the most of the GHS pictograms have an equivalent in the old system, the pictograms GHS 04, GHS 07 and GHS 08 are completely new. 9 Pictograms.
A Guide to GHS Pictograms - BabelPlex
2019年2月1日 · A compliant GHS label must have a signal word, a precautionary statement, a hazard statement, and applicable hazard pictogram(s). Learn what the 9 GHS symbols are.
Pyrophoric materials react with air, or with moisture in air. Typical reactions which occur are oxidation and hydrolysis, and the heat generated by the reactions may ignite the chemical.