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Flammable Liquids

1 OSHA and HazCom article tagged "Flammable Liquids" — practical, CFR-cited guidance verified against primary sources.

Flammable Liquid Categories Decoded: Flash Point and Boiling Point Thresholds (Cat 1-4) - GHS article thumbnail
GHS

Flammable Liquid Categories Decoded: Flash Point and Boiling Point Thresholds (Cat 1-4)

GHS sorts flammable liquids into 4 categories by flash point and boiling point. See the exact Cat 1-4 thresholds in °C and °F, signal words, pictograms, and how OSHA HazCom classification drives the label.

Jun 25, 2026
11 min read
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