Document JNOOaX5YkydL7ZM3y81RYD7xv

534 G. W. JONES TABLE 4 (continued) Minimum ignition temperatures In air In oxygen Name Dimethyl ether 2,3-Dimethylpentane 2,2-Dimethylpropane Dimethyl sulfide Divinyl ether Ethane Ethyl alcohol Ethylamine Ethyl butyrate Ethyl chloride Ethylcyclobutane Ethylcyclohexane Ethylcyclopentane Ethylene Ethylenechlorohydrin Ethyleneimine Ethyl ether Ethyl mercaptan Ethyl propionate Furfuial.alQP.bol. Gasoline, motor Heptane Hexane Hydrazine Hydrazine hydrate Hydrogen ^ Hydrogen sulfide Isophorone Methane Methyl alcohol Methylamine Methyl isobutyl ketone Methylene chloride 2-Methylpentane Methyl propionate Naphthalene Neohexane Nicotine Isooctane Paraldehyde Pentane iBOpentane Phthalic anhydride ____ Formula CiH,0 CtH,| CiHn CiHiS CAO CjH, CAO CjHjN CtHisOa C,H,C1 CiH,i CjH,, C7H14 C3B4 . C,H,0C1 CIH4N C4H10O CiHjS C4H10O1 CiHiQi CjHn CHu ' NjH, NiH,-H,0 H, HiS CbHmO CH, CH.0 CH,N C*H0 CH1CI1 CeHu C^HaQii CjoH# CHu CioHuNj .CjH, C,HU C.HuO, CiH,t C,H,, C,H,0, 0 F. 662 639 842 403 680 959 738 723 865 921 . 414 504 504 914 797 612 345 570 824 736 691 433 453 518 558 1062 558 864' 1103 867 806 869 1188 583 876 959 797 471 ___99A 813 460 549 788 1076 0 C. 350 337 450 206 360 515 392 384 463 494 212 262 262 490 425 322 174 299 440 361: 366 223 234 270 292 572 292 462 595 464 430 465 642 306 469 515 425 244 434 238 287 420 580 Ref. no. 0 j. Ref. 0 C. no. 73 30 30 . 31 29 75 80 31 73 30 75 75 75 96 73 30 38 51 38 73 38 75 75 45 31 97 98 73 97 21 10 30 73 30 30 100 30 49 75 10 11 75 10 38 468 252 73 495 257 30 552 289 30 374 190 31 331 166 30 943 506 10' 624 329 82' 633 334 31 664 351 73 874 468 73 390 199 , 30 487 253 30: 462 242 30: 905 485 96 752 400 73-' 559 293 30: 336 169 38' 502 261 51' 601 316 38- 687 - .364___ .7: 500 260 408 209 437 225 399 204 424 218 1067 575 428 220 612 322 1033 556 862 461 752 400 541 283 1123 606 464 240 804 . 429 ' 918 492 520 271 455 235 541 410 496 561 1033 283 210 258 294 556 HAZARDS OF COMBUSTIBLE GASES AND VAPORS 535 TABLE 4 (continued) Minimum ignition temperature In air In oxygen Name jippane ?!ppyl acetate propyl acetate opyl alcohol .pylamine iropylamine pyl bromide ppylene ppylene glycol dpropyl ether ropyl formate opropyl formate t^reno ichloroethylene Jsthylamirie ethylene glycol imethylamine Hf4-Trimethylpentane Formula C,H, CiHioOj CHioOs C,H,0 C,H,N C.H.N C,H,Br C,H, CjHgOj C,H,,0 G.H.0 C,H,0 C.H, CiHCl, CHijN CJjHhO* CjHN C|Hia C10H11 Ref. Ref. F. C. no. F. 0 c. no. 920 493 73 874 468 73 842 450 73 730 388 73 881 476 10 838 448 73 822 439 73 622 328 86 604 318 31 640 282 31 756 402 30 698 370 30 914 490 73 491 255 73 856 458 42 793 423 30 790 421 73 738 392 73 781 416 10 306 162 10 851 455 10 594 312 10 905 485 10 774 412 10 914 490 73 842 450 73 865 463 73 786 419 73 450 232 31 388 198 31 700 371 31 471 244 31 374 190 31 347 176 31 813 434 10 542 283 10 491 255 21 464 240 107 ,91 the only measure of the fire and explosion hazards. Other important factors, |h as its minimum ignition temperature, flammable limits, temperature range ^flammability, density of the vapor, and chemical stability, are also of marked portance. The flash point is determined by "closed"- or "open"-cup methods. In either .e a given volume of the liquid is heated in a container at a definite rate, and fiodically a test flame or spark is passed across the surface of the liquid. The emperature at which, on ignition, a flame passes across the surface of the liquid the container is taken as the flash point. The container is open to the air in open-cup method, while in the closed-cup method the space above the liquid hovered. A small opening is.uncovered only at the time the test ,flame is intro- Lower values are obtained by the closed-cup method and it .gives more Urate indications of flammable-vapor hazards for a given temperature. The h points tabulated in Table 3 are for the closed-cup method. . ^ rV.--Temperature-Range-ofJElammability___:______:_________ Combustible gases, such as methane, hydrogen, and acetylene, when mixed !|h air in explosive proportions, are but slightly affected as to explosion hazards K. Bunte and A. Block, Goa- u. Wasserjach, 78, 326 (1935). | mH. Moore, J. Soc. Chem. Ind. {London), 36, 109 (1917). '' i 8 l r |