Examples: Where Lfl:Lower Flamable Limit; LEL: Lower Explosive Limit; UEL: Upper Explosive Limit; NFPA : NFPA Class; FP: Flash Point; MIE: Minimum ignition energyin mJ - expressed as percent by volume in air (Note, for many chemicals it takes the least amount of ignition energy midpoint between the LEL and UEL); AIT: Autoignition temperature: Substance: Acetaldehyde, LFL/LEL: 4. 0, UFL/UEL: 57. 0, NFPA : IA, FP: -39°C, MIE: 0. 37, AIT: 175°C; Substance: Acetic acid (glacial), LFL/LEL: 4, UFL/UEL: 19. 9, NFPA : II, FP: 39°C to 43°C, MIE: No Report, AIT: 463°C; Substance: Acetic anhydride, LFL/LEL: No Report, UFL/UEL: No Report, NFPA : II, FP: 54°C, MIE: No Report, AIT: No Report; Substance: Acetone, LFL/LEL: 2. 6–3, UFL/UEL: 12. 8–13, NFPA : IB, FP: -17°C, MIE: 1. 15 @ 4. 5%, AIT: 465°C, 485°C; Substance: Acetonitrile, LFL/LEL: No Report, UFL/UEL: No Report, NFPA : IB, FP:, MIE: 2°C, AIT: 524°C; Substance: Acetyl chloride, LFL/LEL: 7. 3, UFL/UEL: 19, NFPA : IB, FP: 5°C, MIE: No Report, AIT: 390°C; Substance: Acetylene, LFL/LEL: 2. 5, UFL/UEL: 82, NFPA : IA, FP: -18°C, MIE: 0. 017 @ 8. 5% (in pure oxygen 0. 0002 @ 40%), AIT: 305°C; Substance: Acrolein, LFL/LEL: 2. 8, UFL/UEL: 31, NFPA : IB, FP: -26°C, MIE: 0. 13, AIT: No Report; Substance: Acrylonitrile, LFL/LEL: 3. 0, UFL/UEL: 17. 0, NFPA :, FP:, MIE:, AIT:No Report; Substance: No Report, LFL/LEL: No Report, UFL/UEL: No Report, NFPA : IB, FP: 0°C, MIE: 0. 16 @ 9. 0%, AIT: No Report; Substance: Allyl chloride, LFL/LEL: 2. 9, UFL/UEL: 11. 1, NFPA : IB, FP: -32°C, MIE: 0. 77, AIT: No Report; Substance: Ammonia, LFL/LEL: 15, UFL/UEL: 28, NFPA : IIIB, FP: 11°C, MIE: 680, AIT: 651°C