# ความดันไอของธาตุ (หน้าข้อมูล)
เวเปอร์เพรสเชอร์ 
  1 Pa 10 Pa  100 Pa  1 kPa  10 kPa  100 kPa 1 H ไฮโดรเจน use (T/K)     15  20 CRC (T/°C)     -258.6  -252.8  2 He ฮีเลียม use (T/K)     3  4 CRC (T/°C)     -270.6  -268.9  3 Li ลิเทียม use (T/K) 797  885  995  1144  1337  1610 CRC (T/°C) 524.3  612.3  722.1  871.2  1064.3  1337.1 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.673 - 8310 / (T/K) CR2  liquid, m.p. to 1000 K: log (P/Pa) = 10.061 - 8023 / (T/K) 797.4  885.4  995.3      4 Be เบริลเลียม use (T/K) 1462  1608  1791  2023  2327  2742 CRC (T/°C) 1189 (s)  1335  1518  1750  2054  2469 CR2  solid, 298 K to m.p.: log (P/Pa) = 13.048 - 17020 / (T/K) - 0.4440 log (T/K) 1461.8       CR2  liquid, m.p. to 1800 K: log (P/Pa) = 10.792 - 15731 / (T/K)  1606.5  1789.2      5 B โบรอน use (T/K) 2348  2562  2822  3141  3545  4072 CRC (T/°C) 2075  2289  2549  2868  3272  3799  6 C คาร์บอน (แกรไฟต์) use (T/K)  2839  3048  3289  3572  3908 CRC (T/°C)  2566 (s)  2775 (s)  3016 (s)  3299 (s)  3635 (s)  7 N ไนโตรเจน use (T/K) 37  41  46  53  62  77 CRC (T/°C) -236 (s)  -232 (s)  -226.8 (s)  -220.2 (s)  -211.1 (s)  -195.9  8 O ออกซิเจน use (T/K)    61  73  90 CRC (T/°C)    -211.9  -200.5  -183.1  9 F ฟลูออรีน use (T/K) 38  44  50  58  69  85 CRC (T/°C) -235 (s)  -229.5 (s)  -222.9 (s)  -214.8  -204.3  -188.3  10 Ne นีออน use (T/K) 12  13  15  18  21  27 CRC (T/°C) -261 (s)  -260 (s)  -258 (s)  -255 (s)  -252 (s)  -246.1  11 Na โซเดียม use (T/K) 554  617  697  802  946  1153 CRC (T/°C) 280.6  344.2  424.3  529  673  880.2 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.304 - 5603 / (T/K) CR2  liquid, m.p. to 700 K: log (P/Pa) = 9.710 - 5377 / (T/K) 553.8  617.3  697.4      12 Mg แมกนีเซียม use (T/K) 701  773  861  971  1132  1361 CRC (T/°C) 428 (s)  500 (s)  588 (s)  698  859  1088 CR2  solid, 298 K to m.p.: log (P/Pa) = 13.495 - 7813 / (T/K) - 0.8253 log (T/K) 700.9  772.7  861.2      13 Al อะลูมิเนียม use (T/K) 1482  1632  1817  2054  2364  2790 CRC (T/°C) 1209  1359  1544  1781  2091  2517 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.465 - 17342 / (T/K) - 0.7927 log (T/K) CR2  liquid, m.p. to 1800 K: log (P/Pa) = 10.917 - 16211 / (T/K) 1484.9  1634.7  1818.0      14 Si ซิลิคอน use (T/K) 1908  2102  2339  2636  3021  3537 CRC (T/°C) 1635  1829  2066  2363  2748  3264  15 P ฟอสฟอรัส (ขาว) use (T/K) 279  307  342  388  453  549 CRC (T/°C) 6 (s)  34 (s)  69  115  180  276  15 P ฟอสฟอรัส (แดง) use (T/K) 455  489  529  576  635  704 CRC (T/°C) 182 (s)  216 (s)  256 (s)  303 (s)  362 (s)  431 (s)  16 S กำมะถัน use (T/K) 375  408  449  508  591  717 CRC (T/°C) 102 (s)  135  176  235  318  444  17 Cl คลอรีน use (T/K) 128  139  153  170  197  239 CRC (T/°C) -145 (s)  -133.7 (s)  -120.2 (s)  -103.6 (s)  -76.1  -34.2  18 Ar อาร์กอน use (T/K)  47  53  61  71  87 CRC (T/°C)  -226.4 (s)  -220.3 (s)  -212.4 (s)  -201.7 (s)  -186.0  19 K โพแทสเซียม use (T/K) 473  530  601  697  832  1029 CRC (T/°C) 200.2  256.5  328  424  559  756.2 CR2  solid, 298 K to m.p.: log (P/Pa) = 9.967 - 4646 / (T/K) CR2  liquid, m.p. to 600 K: log (P/Pa) = 9.408 - 4453 / (T/K) 473.3  529.6  601.1      20 Ca แคลเซียม use (T/K) 864  956  1071  1227  1443  1755 CRC (T/°C) 591 (s)  683 (s)  798 (s)  954  1170  1482 CR2  solid, 298 K to m.p.: log (P/Pa) = 15.133 - 9517 / (T/K) - 1.4030 log (T/K) 864.2  956.4  1071.5      21 Sc สแคนเดียม use (T/K) 1645  1804  (2006)  (2266)  (2613)  (3101) CRC (T/°C) 1372 (s)  1531 (s)  1733 (i)  1993 (i)  2340 (i)  2828 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 11.656 - 19721 / (T/K) + 0.2885 log (T/K) - 0.3663 (T/K)-3 CR2  liquid, m.p. to 2000 K: log (P/Pa) = 10.801 - 17681 / (T/K)  22 Ti ไทเทเนียม use (T/K) 1982  2171  (2403)  2692  3064  3558 CRC (T/°C) 1709  1898  2130 (e)  2419  2791  3285 CR2  solid, 298 K to m.p.: log (P/Pa) = 16.931 - 24991 / (T/K) - 1.3376 log (T/K) CR2  liquid, m.p. to 2400 K: log (P/Pa) = 11.364 - 22747 / (T/K) 2001.7  2194.8       23 V วาเนเดียม use (T/K) 2101  2289  2523  2814  3187  3679 CRC (T/°C) 1828 (s)  2016  2250  2541  2914  3406 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.750 - 27132 / (T/K) - 0.5501 log (T/K) 2099.6       CR2  liquid, m.p. to 2500 K: log (P/Pa) = 11.935 - 25011 / (T/K)  2287.2  2517.5      24 Cr โครเมียม use (T/K) 1656  1807  1991  2223  2530  2942 CRC (T/°C) 1383 (s)  1534 (s)  1718 (s)  1950  2257  2669 CR2  solid, 298 K to 2000 K: log (P/Pa) = 11.806 - 20733 / (T/K) + 0.4391 log (T/K) - 0.4094 (T/K)-3  25 Mn แมงกานีส use (T/K) 1228  1347  1493  1691  1955  2333 CRC (T/°C) 955 (s)  1074 (s)  1220 (s)  1418  1682  2060 CR2  solid, 298 K to m.p.: log (P/Pa) = 17.811 - 15097 / (T/K) - 1.7896 log (T/K) 1229.2  1346.6  1490.0      26 Fe เหล็ก use (T/K) 1728  1890  2091  2346  2679  3132 CRC (T/°C) 1455 (s)  1617  1818  2073  2406  2859 CR2  solid, 298 K to m.p.: log (P/Pa) = 12.106 - 21723 / (T/K) + 0.4536 log (T/K) - 0.5846 (T/K)-3 CR2  liquid, m.p. to 2100 K: log (P/Pa) = 11.353 - 19574 / (T/K)  1890.7  2092.8      27 Co โคบอลต์ use (T/K) 1790  1960  2165  2423  2755  3198 CRC (T/°C) 1517  1687  1892  2150  2482  2925 CR2  solid, 298 K to m.p.: log (P/Pa) = 15.982 - 22576 / (T/K) - 1.0280 log (T/K) CR2  liquid, m.p. to 2150 K: log (P/Pa) = 11.494 - 20578 / (T/K) 1790.3  1960.9  2167.5      28 Ni นิกเกิล use (T/K) 1783  1950  2154  2410  2741  3184 CRC (T/°C) 1510  1677  1881  2137  2468  2911 CR2  solid, 298 K to m.p.: log (P/Pa) = 15.563 - 22606 / (T/K) - 0.8717 log (T/K) CR2  liquid, m.p. to 2150 K: log (P/Pa) = 11.672 - 20765 / (T/K) 1779.0  1945.7  2146.9      29 Cu ทองแดง use (T/K) 1509  1661  1850  2089  2404  2836 CRC (T/°C) 1236  1388  1577  1816  2131  2563 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.129 - 17748 / (T/K) - 0.7317 log (T/K) CR2  liquid, m.p. to 1850 K: log (P/Pa) = 10.855 - 16415 / (T/K) 1512.2  1665.7  1853.8      30 Zn สังกะสี use (T/K) 610  670  750  852  990  (1185) CRC (T/°C) 337 (s)  397 (s)  477  579  717  912 (e) CR2  solid, 298 K to m.p.: log (P/Pa) = 11.108 - 6776 / (T/K) 610.0  670.4      CR2  liquid, m.p. to 750 K: log (P/Pa) = 10.384 - 6286 / (T/K)   749.8      31 Ga แกลเลียม use (T/K) 1310  1448  1620  1838  2125  2518 CRC (T/°C) 1037  1175  1347  1565  1852  2245 CR2  solid, 298 K to m.p.: log (P/Pa) = 11.663 - 14208 / (T/K) CR2  liquid, m.p. to 1600 K: log (P/Pa) = 11.760 - 13984 / (T/K) - 0.3413 log (T/K) 1307.4  1444.4  1613.8      32 Ge เจอร์เมเนียม use (T/K) 1644  1814  2023  2287  2633  3104 CRC (T/°C) 1371  1541  1750  2014  2360  2831  33 As สารหนู use (T/K) 553  596  646  706  781  874 CRC (T/°C) 280 (s)  323 (s)  373 (s)  433 (s)  508 (s)  601 (s)  34 Se ซีลีเนียม use (T/K) 500  552  617  704  813  958 CRC (T/°C) 227  279  344  431  540  685  35 Br โบรมีน use (T/K) 185  201  220  244  276  332 CRC (T/°C) -87.7 (s)  -71.8 (s)  -52.7 (s)  -29.3 (s)  2.5  58.4  36 Kr คริปทอน use (T/K) 59  65  74  84  99  120 CRC (T/°C) -214.0 (s)  -208.0 (s)  -199.4 (s)  -188.9 (s)  -174.6 (s)  -153.6  37 Rb รูบิเดียม use (T/K) 434  486  552  641  769  958 CRC (T/°C) 160.4  212.5  278.9  368  496.1  685.3 CR2  solid, 298 K to m.p.: log (P/Pa) = 9.863 - 4215 / (T/K) CR2  liquid, m.p. to 550 K: log (P/Pa) = 9.318 - 4040 / (T/K) 433.6  485.7  552.1      38 Sr สตรอนเชียม use (T/K) 796  882  990  1139  1345  1646 CRC (T/°C) 523 (s)  609 (s)  717 (s)  866  1072  1373 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.232 - 8572 / (T/K) - 1.1926 log (T/K) 795.7  882.0  989.9      39 Y อิตเทรียม use (T/K) 1883  2075  (2320)  (2627)  (3036)  (3607) CRC (T/°C) 1610.1  1802.3  2047 (i)  2354 (i)  2763 (i)  3334 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.741 - 22306 / (T/K) - 0.8705 log (T/K) CR2  liquid, m.p. to 2300 K: log (P/Pa) = 10.801 - 20341 / (T/K) 1883.3  2075.4       40 Zr เซอร์โคเนียม use (T/K) 2639  2891  3197  3575  4053  4678 CRC (T/°C) 2366  2618  2924  3302  3780  4405 CR2  solid, 298 K to m.p.: log (P/Pa) = 15.014 - 31512 / (T/K) - 0.7890 log (T/K) CR2  liquid, m.p. to 2500 K: log (P/Pa) = 11.812 - 30295 / (T/K)  41 Nb ไนโอเบียม use (T/K) 2942  3207  3524  3910  4393  5013 CRC (T/°C) 2669  2934  3251  3637  4120  4740 CR2  solid, 298 K to 2500 K: log (P/Pa) = 13.828 - 37818 / (T/K) - 0.2575 log (T/K)  42 Mo โมลิบดีนัม use (T/K) 2742  2994  3312  3707  4212  4879 CRC (T/°C) 2469 (s)  2721  3039  3434  3939  4606 CR2  solid, 298 K to 2500 K: log (P/Pa) = 16.535 - 34626 / (T/K) - 1.1331 log (T/K)  43 Tc เทคนีเชียม use (T/K) (2727)  (2998)  (3324)  (3726)  (4234)  (4894) CRC (T/°C) 2454 (e)  2725 (e)  3051 (e)  3453 (e)  3961 (e)  4621 (e)  44 Ru รูทีเนียม use (T/K) 2588  2811  3087  3424  3845  4388 CRC (T/°C) 2315 (s)  2538  2814  3151  3572  4115 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.761 - 34154 / (T/K) - 0.4723 log (T/K) 2597.6        45 Rh โรเดียม use (T/K) 2288  2496  2749  3063  3405  3997 CRC (T/°C) 2015  2223  2476  2790  3132  3724 CR2  solid, 298 K to m.p.: log (P/Pa) = 15.174 - 29010 / (T/K) - 0.7068 log (T/K) CR2  liquid, m.p. to 2500 K: log (P/Pa) = 11.808 - 26792 / (T/K) 2269.0  2478.9       46 Pd แพลเลเดียม use (T/K) 1721  1897  2117  2395  2753  3234 CRC (T/°C) 1448 (s)  1624  1844  2122  2480  2961 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.508 - 19813 / (T/K) - 0.9258 log (T/K) 1721.0       CR2  liquid, m.p. to 2100 K: log (P/Pa) = 10.432 - 17899 / (T/K)  1897.7       47 Ag เงิน use (T/K) 1283  1413  1575  1782  2055  2433 CRC (T/°C) 1010  1140  1302  1509  1782  2160 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.133 - 14999 / (T/K) - 0.7845 log (T/K) CR2  liquid, m.p. to 1600 K: log (P/Pa) = 10.758 - 13827 / (T/K) 1285.3  1417.0  1578.8      48 Cd แคดเมียม use (T/K) 530  583  654  745  867  1040 CRC (T/°C) 257 (s)  310 (s)  381  472  594  767 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.945 - 5799 / (T/K) 529.8  583.1      CR2  liquid, m.p. to 650 K: log (P/Pa) = 10.248 - 5392 / (T/K)   653.7      49 In อินเดียม use (T/K) 1196  1325  1485  1690  1962  2340 CRC (T/°C) 923  1052  1212  1417  1689  2067 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.997 - 12548 / (T/K) CR2  liquid, m.p. to 1500 K: log (P/Pa) = 10.380 - 12276 / (T/K) 1182.7  1308.7  1464.9      50 Sn ดีบุก use (T/K) 1497  1657  1855  2107  2438  2893 CRC (T/°C) 1224  1384  1582  1834  2165  2620 CR2  solid, 298 K to m.p.: log (P/Pa) = 11.042 - 15710 / (T/K) CR2  liquid, m.p. to 1850 K: log (P/Pa) = 10.268 - 15332 / (T/K) 1493.2  1654.3  1854.4      51 Sb พลวง use (T/K) 807  876  1011  1219  1491  1858 CRC (T/°C) 534 (s)  603 (s)  738  946  1218  1585  52 Te เทลลูเรียม use (T/K)   (775)  (888)  1042  1266 CRC (T/°C)   502 (e)  615 (e)  768.8  992.4  53 I ไอโอดีน (รอมบิก) use (T/K) 260  282  309  342  381  457 CRC (T/°C) -12.8 (s)  9.3 (s)  35.9 (s)  68.7 (s)  108 (s)  184.0  54 Xe ซีนอน use (T/K) 83  92  103  117  137  165 CRC (T/°C) -190 (s)  -181 (s)  -170 (s)  -155.8 (s)  -136.6 (s)  -108.4  55 Cs ซีเซียม use (T/K) 418  469  534  623  750  940 CRC (T/°C) 144.5  195.6  260.9  350.0  477.1  667.0 CR2  solid, 298 K to m.p.: log (P/Pa) = 9.717 - 3999 / (T/K) CR2  liquid, m.p. to 550 K: log (P/Pa) = 9.171 - 3830 / (T/K) 417.6  468.7  534.1      56 Ba แบเรียม use (T/K) 911  1038  1185  1388  1686  2170 CRC (T/°C) 638 (s)  765  912  1115  1413  1897 CR2  solid, 298 K to m.p.: log (P/Pa) = 17.411 - 9690 / (T/K) - 2.2890 log (T/K) 911.0       CR2  liquid, m.p. to 1200 K: log (P/Pa) = 9.013 - 8163 / (T/K)  1018.7  1164.0      57 La แลนทานัม use (T/K) (2005)  (2208)  (2458)  (2772)  (3178)  (3726) CRC (T/°C) 1732 (i)  1935 (i)  2185 (i)  2499 (i)  2905 (i)  3453 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 12.469 - 22551 / (T/K) - 0.3142 log (T/K) CR2  liquid, m.p. to 2450 K: log (P/Pa) = 10.917 - 21855 / (T/K) 2001.9  2203.8  2450.9      58 Ce ซีเรียม use (T/K) 1992  2194  2442  2754  3159  3705 CRC (T/°C) 1719  1921  2169  2481  2886  3432 CR2  solid, 298 K to m.p.: log (P/Pa) = 11.145 - 21752 / (T/K) CR2  liquid, m.p. to 2450 K: log (P/Pa) = 10.617 - 21200 / (T/K) 1996.8  2204.4  2460.3      59 Pr เพรซีโอดิเมียม use (T/K) 1771  1973  (2227)  (2571)  (3054)  (3779) CRC (T/°C) 1497.7  1699.4  1954 (i)  2298 (i)  2781 (i)  3506 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 13.865 - 18720 / (T/K) - 0.9512 log (T/K) CR2  liquid, m.p. to 2200 K: log (P/Pa) = 9.778 - 17315 / (T/K) 1770.8  1972.5       60 Nd นีโอดิเมียม use (T/K) 1595  1774  1998  (2296)  (2715)  (3336) CRC (T/°C) 1322.3  1501.2  1725.3  2023 (i)  2442 (i)  3063 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.002 - 17264 / (T/K) - 0.9519 log (T/K) CR2  liquid, m.p. to 2000 K: log (P/Pa) = 9.918 - 15824 / (T/K) 1595.5  1774.4  1998.5      62 Sm ซาแมเรียม use (T/K) 1001  1106  1240  (1421)  (1675)  (2061) CRC (T/°C) 728 (s)  833 (s)  967 (s)  1148 (i)  1402 (i)  1788 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.994 - 11034 / (T/K) - 1.3287 log (T/K) 1002.5  1109.2  1242.2      63 Eu ยูโรเพียม use (T/K) 863  957  1072  1234  1452  1796 CRC (T/°C) 590 (s)  684 (s)  799 (s)  961  1179  1523 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.246 - 9459 / (T/K) - 1.1661 log (T/K) 874.6  968.8  1086.5      64 Gd แกโดลิเนียม use (T/K) (1836)  (2028)  (2267)  (2573)  (2976)  (3535) CRC (T/°C) 1563 (i)  1755 (i)  1994 (i)  2300 (i)  2703 (i)  3262 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 13.350 - 20861 / (T/K) - 0.5775 log (T/K) CR2  liquid, m.p. to 2250 K: log (P/Pa) = 10.563 - 19389 / (T/K) 1835.6  2027.5  2264.3      65 Tb เทอร์เบียม use (T/K) 1789  1979  (2201)  (2505)  (2913)  (3491) CRC (T/°C) 1516.1  1706.1  1928 (i)  2232 (i)  2640 (i)  3218 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.516 - 20457 / (T/K) - 0.9247 log (T/K) CR2  liquid, m.p. to 2200 K: log (P/Pa) = 10.417 - 18639 / (T/K) 1789.3  1979.3  2214.4      66 Dy ดิสโพรเซียม use (T/K) 1378  1523  (1704)  (1954)  (2304)  (2831) CRC (T/°C) 1105 (s)  1250 (s)  1431 (i)  1681 (i)  2031 (i)  2558 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.585 - 15336 / (T/K) - 1.1114 log (T/K) 1382.3  1526.5       67 Ho โฮลเมียม use (T/K) 1432  1584  (1775)  (2040)  (2410)  (2964) CRC (T/°C) 1159 (s)  1311 (s)  1502 (i)  1767 (i)  2137 (i)  2691 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.791 - 15899 / (T/K) - 1.1753 log (T/K) 1434.8  1585.2       68 Er เออร์เบียม use (T/K) 1504  1663  (1885)  (2163)  (2552)  (3132) CRC (T/°C) 1231 (s)  1390 (s)  1612 (i)  1890 (i)  2279 (i)  2859 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 14.922 - 16642 / (T/K) - 1.2154 log (T/K) 1504.7  1663.0      CR2  liquid, m.p. to 1900 K: log (P/Pa) = 9.674 - 14380 / (T/K)   1873.9      69 Tm ทูเลียม use (T/K) 1117  1235  1381  1570  (1821)  (2217) CRC (T/°C) 844 (s)  962 (s)  1108 (s)  1297 (s)  1548 (i)  1944 (i) CR2  solid, 298 K to 1400 K: log (P/Pa) = 13.888 - 12270 / (T/K) - 0.9564 log (T/K) 1118.3  1235.5  1381.0      70 Yb อิตเทอร์เบียม use (T/K) 736  813  910  1047  (1266)  (1465) CRC (T/°C) 463 (s)  540 (s)  637 (s)  774 (s)  993 (i)  1192 (i) CR2  solid, 298 K to 900 K: log (P/Pa) = 14.117 - 8111 / (T/K) - 1.0849 log (T/K) 737.0  814.4       71 Lu ลูทีเชียม use (T/K) 1906  2103  2346  (2653)  (3072)  (3663) CRC (T/°C) 1633 (s)  1829.8  2072.8  2380 (i)  2799 (i)  3390 (i) CR2  solid, 298 K to m.p.: log (P/Pa) = 13.799 - 22423 / (T/K) - 0.6200 log (T/K) 1905.9       CR2  liquid, m.p. to 2350 K: log (P/Pa) = 10.654 - 20302 / (T/K)  2103.0  2346.0      72 Hf แฮฟเนียม use (T/K) 2689  2954  3277  3679  4194  4876 CRC (T/°C) 2416  2681  3004  3406  3921  4603 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.451 - 32482 / (T/K) - 0.6735 log (T/K)  73 Ta แทนทาลัม use (T/K) 3297  3597  3957  4395  4939  5634 CRC (T/°C) 3024  3324  3684  4122  4666  5361 CR2  solid, 248 K to 2500 K: log (P/Pa) = 21.813 - 41346 / (T/K) - 3.2152 log (T/K) + 0.7437 (T/K)-3  74 W ทังสเตน use (T/K) 3477  3773  4137  4579  5127  5823 CRC (T/°C) 3204 (s)  3500  3864  4306  4854  5550 CR2  solid, 298 K to 2350 K: log (P/Pa) = 7.951 - 44094 / (T/K) + 1.3677 log (T/K) CR2  solid, 2200 K to 2500 K: log (P/Pa) = -49.521 - 57687 / (T/K) - 12.2231 log (T/K)  75 Re รีเนียม use (T/K) 3303  3614  4009  4500  5127  5954 CRC (T/°C) 3030 (s)  3341  3736  4227  4854  5681 CR2  solid, 298 K to 2500 K: log (P/Pa) = 16.549 - 40726 / (T/K) - 1.1629 log (T/K)  76 Os ออสเมียม use (T/K) 3160  3423  3751  4148  4638  5256 CRC (T/°C) 2887 (s)  3150  3478  3875  4365  4983 CR2  solid, 298 K to 2500 K: log (P/Pa) = 14.425 - 41198 / (T/K) - 0.3896 log (T/K)  77 Ir อิริเดียม use (T/K) 2713  2957  3252  3614  4069  4659 CRC (T/°C) 2440 (s)  2684  2979  3341  3796  4386 CR2  solid, 298 K to 2500 K: log (P/Pa) = 15.512 - 35099 / (T/K) - 0.7500 log (T/K)  78 Pt แพลทินัม use (T/K) 2330  (2550)  2815  3143  3556  4094 CRC (T/°C) 2057  2277 (e)  2542  2870  3283  3821 CR2  solid, 298 K to m.p.: log (P/Pa) = 9.888 - 29387 / (T/K) + 1.1039 log (T/K) - 0.4527 (T/K)-3 CR2  liquid, m.p. to 2500 K: log (P/Pa) = 11.392 - 26856 / (T/K) 2357.4        79 Au ทอง use (T/K) 1646  1814  2021  2281  2620  3078 CRC (T/°C) 1373  1541  1748  2008  2347  2805 CR2  solid, 298 K to m.p.: log (P/Pa) = 14.158 - 19343 / (T/K) - 0.7479 log (T/K) CR2  liquid, m.p. to 2050 K: log (P/Pa) = 10.838 - 18024 / (T/K) 1663.0  1832.1  2039.4      80 Hg ปรอท use (T/K) 315  350  393  449  523  629 CRC (T/°C) 42.0  76.6  120.0  175.6  250.3  355.9 CR2  liquid, 298 K to 400 K: log (P/Pa) = 10.122 - 3190 / (T/K) 315.2  349.7  392.8      81 Tl แทลเลียม use (T/K) 882  977  1097  1252  1461  1758 CRC (T/°C) 609  704  824  979  1188  1485 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.977 - 9447 / (T/K) CR2  liquid, m.p. to 1100 K: log (P/Pa) = 10.265 - 9037 / (T/K) 880.4  975.4  1093.4      82 Pb ตะกั่ว use (T/K) 978  1088  1229  1412  1660  2027 CRC (T/°C) 705  815  956  1139  1387  1754 CR2  solid, 298 K to m.p.: log (P/Pa) = 10.649 - 10143 / (T/K) CR2  liquid, m.p. to 1200 K: log (P/Pa) = 9.917 - 9701 / (T/K) 978.2  1087.9       83 Bi บิสมัท use (T/K) 941  1041  1165  1325  1538  1835 CRC (T/°C) 668  768  892  1052  1265  1562  84 Po พอโลเนียม use (T/K)    (846)  1003  1236 CRC (T/°C)    573 (e)  730.2  963.3  85 At แอสทาทีน use (T/K) 361  392  429  475  531  607 CRC (T/°C) 88 (s)  119 (s)  156 (s)  202 (s)  258 (s)  334  86 Rn เรดอน use (T/K) 110  121  134  152  176  211 CRC (T/°C) -163 (s)  -152 (s)  -139 (s)  -121.4 (s)  -97.6 (s)  -62.3  87 Fr แฟรนเซียม use (T/K) (404)  (454)  (519)  (608)  (738)  (946) CRC (T/°C) 131 (e)  181 (e)  246 (e)  335 (e)  465 (e)  673 (e)  88 Ra เรเดียม use (T/K) 819  906  1037  1209  1446  1799 CRC (T/°C) 546 (s)  633 (s)  764  936  1173  1526  90 Th ทอเรียม use (T/K) 2633  2907  3248  3683  4259  5055 CRC (T/°C) 2360  2634  2975  3410  3986  4782 CR2  solid, 298 K to m.p.: log (P/Pa) = 13.674 - 31483 / (T/K) - 0.5288 log (T/K) CR2  liquid, m.p. to 2500 K: log (P/Pa) = -13.447 - 24569 / (T/K) + 6.6473 log (T/K)  91 Pa โพรแทกทิเนียม CR2  solid, 298 K to m.p.: log (P/Pa) = 15.558 - 34869 / (T/K) - 1.0075 log (T/K) CR2  liquid, m.p. to 2500 K: log (P/Pa) = 11.183 - 32874 / (T/K)  92 U ยูเรเนียม use (T/K) 2325  2564  2859  3234  3727  4402 CRC (T/°C) 2052  2291  2586  2961  3454  4129 CR2  solid, 298 K to m.p.: log (P/Pa) = 5.776 - 27729 / (T/K) + 2.6982 log (T/K) - 1.5471 (T/K)-3 CR2  liquid, m.p. to 2500 K: log (P/Pa) = 25.741 - 28776 / (T/K) - 4.0962 log (T/K) 2422.6        93 Np เนปทูเนียม use (T/K) 2194  2437      CR2  solid, 298 K to m.p.: log (P/Pa) = 24.649 - 24886 / (T/K) - 3.9991 log (T/K) CR2  liquid, m.p. to 2500 K: log (P/Pa) = 15.082 - 23378 / (T/K) - 1.3250 log (T/K) 2194.1  2436.6       94 Pu พลูโทเนียม use (T/K) 1756  1953  2198  2511  2926  3499 CRC (T/°C) 1483  1680  1925  2238  2653  3226 CR2  solid, 500 K to m.p.: log (P/Pa) = 23.864 - 18460 / (T/K) - 4.4720 log (T/K) CR2  solid, 298 K to 600 K: log (P/Pa) = 31.166 - 19162 / (T/K) - 6.6675 log (T/K) CR2  liquid, m.p. to 2450 K: log (P/Pa) = 8.672 - 16658 / (T/K) 1920.9  2171.3       95 Am อะเมริเซียม use (T/K) 1239  1356      CR2  solid, 298 K to m.p.: log (P/Pa) = 16.317 - 15059 / (T/K) - 1.3449 log (T/K) 1238.7  1356.1       96 Cm คูเรียม use (T/K) 1788  1982      CR2  solid, 298 K to m.p.: log (P/Pa) = 13.375 - 20364 / (T/K) - 0.5770 log (T/K) CR2  liquid, m.p. to 2200 K: log (P/Pa) = 10.229 - 18292 / (T/K) 1788.2  1982.0     

 Notes 
 Values are given in terms of temperature necessary to reach the specified pressure.
 Ref. CRC: Uncertainties of several degrees should generally be assumed. (e) Indicates extrapolated values beyond the region of experimental data, subject to greater uncertainty. (i) Indicates values calculated from ideal gas thermodynamic functions. (s) Indicates the substance is solid at this temperature.
 Ref. CR2: The equations reproduce the observed pressures to an accuracy of ±5% or better.
 A conversion factor of log 101325 is included into the original first coefficient of the equations on this page to provide the pressure in pascals. Valid results within the quoted ranges from most equations are included in the table for comparison.

 References 
 CRC 
As quoted from various sources in an online version of:
 David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition. CRC Press. Boca Raton, Florida, 2003; Section 6, Fluid Properties; Vapor Pressure

 CR2 
Vapor pressure equation and coefficients from this source in an online version of: David R. Lide (ed), CRC Handbook of Chemistry and Physics, 84th Edition. CRC Press. Boca Raton, Florida, 2003; Section 4, Properties of the Elements and Inorganic Compounds; Vapor Pressure of the Metallic Elements
 Alcock, C. B., Itkin, V. P., and Horrigan, M. K., Canadian Metallurgical Quarterly, 23, 309, 1984.