Laboratory Safety-Flammable Liquids
Flammable Liquids and Fire Codes for Laboratories
Laboratory Safety-Flammable Liquids
Properties of Flammable Liquids
Invisible Vapor is the Main Concern!
Laboratory Safety-Flammable Liquids
Properties of Flammable Liquids
Definitions: FLASH POINT
The temperature at which a liquid gives off sufficient vapors to form an ignitable mixture with air…near the surface of the liquid.
Laboratory Safety-Flammable Liquids
Properties of Flammable Liquids
Definitions: Ignition Temperature
The minimum temperature required to initiate or cause self-sustained combustion without ignition from an external source. Also called auto-ignition temp.
Laboratory Safety-Flammable Liquids
Properties of Flammable Liquids
Definitions: Upper and Lower Explosive Limits
The range of concentration of a flammable gas or vapor (% volume in air) in which a explosion can occur upon ignition in a confined area.
Laboratory Safety-Flammable Liquids
Compound FP (°F)LEL(%)
UEL
Acetone 0 2.6 13
Benzene 12 1.5 8
CS2 -22 1 50
Ethanol 55 3 19
Et. Oxide 0 3.6 100
Ether -49 2 36
Octane 60 0.5 3
Hydrogen 4 75
Laboratory Safety-Flammable Liquids
CompoundIgnition Temp
Vapor Density
Vapor Pressure
Acetone 1000°F 2 240 mm
Benzene 1044 2.77 100
CS2 212 2.64 400
Ethanol 793 1.59 40
Ether 356 2.56 442
Octane 428 3.86 10
Hydrogen 1075 0.0069
Laboratory Safety-Flammable Liquids
Energy Source Fuel
Oxygen or Oxidizer
Chain Reaction
The Phenomenon of Fire
Laboratory Safety-Flammable Liquids
Fire CodesWho Regulates Flammables?
•State Fire Marshal (NFPA, OBBC, and Ohio Fire Code)•OSHA (Occupational Safety)•DOT (Transportation)•EPA (Flammable Waste)
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA
•Flammable liquids have a flash-point of less than 100°F
•Combustible liquids have a flash-point of 100°F or greater
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Classification
Class IA- FP<73°F, BP<100°FClass IB- FP<73°F, BP>100°FClass IC- 73°F >FP<100°F
Class II- 100°F >FP<140°FClass IIIA- 140°F >FP<200°FClass IIIB- FP > 200°F
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid ClassificationCommon Class IA Solvents
•Acetaldehyde•Ethyl Ether•Ethylene Oxide •Pentane
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid ClassificationCommon Class IB Solvents
Acetone
Benzene
Acetonitrile
Ethanol THF Ethyl AcetateHexane Gasolin
eCarbon Disulfide
Methanol
MEK Cyclohexane
Toluene Pyridine
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Hazardous chemicals stored in the open shall be kept to the minimum necessary for the work being done.
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage-Safety Cabinets
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA-Flammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA-Flammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA-Flammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA-Flammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPAFlammable Liquid Storage
Laboratory Safety-Flammable Liquids
Fire Codes-NFPA-Flammable Liquid Storage
Laboratory Safety-Flammable Liquids
Laboratory Safety-Flammable Liquids
Laboratory Safety-Flammable Liquids
Bonding
And
Grounding
Laboratory Safety-Flammable Liquids
Flammable Liquid Storage in Refrigerators
Laboratory Safety-Flammable Liquids
Accidents Involving Flammable Liquids
Laboratory Safety-Flammable Liquids
Flammable Liquid Transport