U. S. DEPARTMENT OF COMMERCE

W. Averell Harriman, Secretary

NATIONAL BUREAU OF STANDARDS

E. U. Condon, Director

National Bureau of Standards

Miscellaneous Publication M183

Issued April 10, 1947

(Supersedes M126)

TEMPERATURE INTERCONVERSION TABLES (°C<—>°F) AND MELTING POINTS

OF THE CHEMICAL ELEMENTS

TABLE 1.Conversion table: degrees centigrade to degrees Fahrenheit

° c 10 20 30 40 50 60 70 80 90 F F F F F F F F F F

-200 -328 -346 -364 -382 -400 -418 -436 -454

-100 -148 -166 -184 -202 -220 -238 -256 -274 -292 -310

-0 + 32 +14 —4 -22 -40 -58 -76 -94 -112 -130

°C O 32 50 68 86 104 122 140 158 176 194 100 212 230 248 266 284 302 320 338 356 374 1 1. 8 200 392 410 428 446 464 482 500 518 536 554 2 3. 6 300 572 590 608 626 644 662 680 698 716 734 3 5. 4 400 752 770 788 806 824 842 860 878 896 914 4 7. 2 500 932 950 968 986 1004 1022 1040 1058 1076 1094 5 9. uuu 1112 1 1 3ft X X O vj 1148 X X uu 1184 1202 1220 1 938 1274 «o in c

700 1292 1310 1328 1346 1364 1382 1400 1418 1436 1454 7 12. 6 800 1472 1490 1508 1526 1544 1562 1580 1598 1616 1634 8 14. 4 900 1652 1670 1688 1706 1724 1742 1760 1778 1796 1814 9 16. 2

1 839 1 8tD 1x 8fi8 ouo X oou 1 Q04 1 Q99 1 Q4ft x yjo 1 Q7fi 1994

10 18. 1100 2012 2030 2048 2066 2084 2102 2120 2138 2156 2174

1200 2192 2210 2228 2246 2264 2282 2300 2318 2336 2354

1300 2372 2390 2408 2426 2444 2462 2480 2498 2516 2534

1400 2552 2570 2588 2606 2624 2642 2660 2678 2696 2714

1500 2732 2750 2768 2786 2804 2822 2840 2858 2876 2894 Ojj! C 1 fifift 9Q1 9 9Q3ft 9Q48 9Q84 3ftf)9 3ft9ft 3ft38 3D74

1700 3092 3110 3128 3146 3164 3182 3200 3218 3236 3254

12ft

1. 11

1. 67 1800 3272 3290 3308 3326 3344 3362 3380 3398 3416 3434 3 1900 3452 3470 3488 3506 3524 3542 3560 3578 3596 3614

2000 3632 3650 3668 3686 3704 3722 3740 3758 3776 3794 4 2. 22 2100 3812 3830 3848 3866 3884 3902 3920 3938 3956 3974 5 2. 78 2200 3992 4010 4028 4046 4064 4082 4100 4118 4136 4154 6 3. 33 2300 4172 4190 4208 4226 4244 4262 4280 4298 4316 4334

7 3. 89 2400 4352 4370 4388 4406 4424 4442 4460 4478 4496 4514 8 4. 44 2500 4532 4550 4568 4586 4604 4622 4640 4658 4676 4694 9 5. 00 AUUU 4.71 9 4.74.8 4784 48ft9 4890 •4838 48 c foOQlfi 4874

10 5. 56 2700 4892 4910- 4928 4946 4964 4982 5000 5018 5036 5054 11 6. 11 2800 5072 5090 5108 5126 5144 5162 5180 5198 5216 5234 12 6. 67 2900 5252 5270 5288 5306 5324 5342 5360 5378 5396 5414

1314

7. 22

7. 78 3000 5432 5450 5468 5486 5504 5522 5540 5558 5576 5594

3100 5612 5630 5648 5666 5684 5702 5720 5738 5756 5774 15 8. 33 3200 5792 5810 5828 5846 5864 5882 5900 5918 5936 5954

3300 5972 5990 6008 6026 6044 6062 6080 6098 6116 6134 16

17

8. 89

9. 44

3400 6152 6170 0188 6206 6224 6242 6260 6278 6296 6314

3500 6332 6350 6368 6386 6404 6422 6440 6458 6476 6494 18 10. 00 3600 6512 6530 6548 6566 6584 6602 6620 6638 6656 6674

3700 6692 6710 6728 6746 6764 6782 6800 6818 6836 6854

3800 6872 6890 6908 6926 6944 6962 6980 6998 7016 7034

3900 7052 7070 7088 7106 7124 7142 7100 7178 7196 7214

° C 10 20 30 40 50 60 70 80 90

Examples: 1347° C = 2444° F + 12.6° F = 2456.0° F. 33G7° F = 1850° C + 2.78° C = 1852.78° C.

(1)

I
2

TABLE 2.

Conversion table: degrees Fahrenheit to degrees centigrade

(Single boldface figures indicate recurring decimals) p 10 20 30 40 50 60 70 80 90

-400

c

-240. c

-245. 5 C-251. 1 C-256. 6 C - 262. 2 C-267. 7 C C C C

-300

-200

-184. 4 -128. 8 -190.

-134. 4 -195. 5 -140.

-201. 1 - 145. 5 - 206. 6 -151. 1 -212. 2 -156. 6 -217. 7 -162. 2 -223. 3 - 167. 7 -228. 8 - 173. 3 -234. 4 - 17S. 8 -100

-0

-73. 3 -17. 7 -78. 8 -23. 3 -84. 4 -28. 8 -90.

-34. 4 -95. 5 -40.

-101. 1 -45. 5 -106. 6 -51. 1 -112. 2 -56. 6 -117. 7 -62. 2 -123. 3 -67. 7 -17. 7 -12. 2 -6. 6 -1.1 + 4. 4 + 10. + 15. 5 + 21. 1 + 26. 6 + 32. 2

100 200

300

37. 7

93. 3

148. 8

43. 3

98. 8

154. 4

48. 8

104. 4

160.

54. 4

110.

165. 5

60. 115. 5

171. 1

65. 5

121. 1

176. 6

71. 1

126. 6

182. 2

76. 6

132. 2

187. 7

82. 2

137. 7

193. 3

87. 7

143. 3

198. 8

400

500

600

204. 4

260. 315. 5

210. 265. 5

321. 1

215. 5

271. 1

326. 6

221. 1

276. 6

332. 2

226. 6

282. 2

337. 7

232. 2

287. 7 343. 3

237. 7 293. 3

348. 8

243. 3

298. 8

354. 4

248. 8

304. 4

360.

254. 4

310.

365. 5

700 800

900

371. 1

426. 6

482. 2

376. 6

432. 2

487. 7

382. 2

437. 7 493. 4

387. 7 443. 3

498. 8

393. 3

448. 8

504. 4

398. 8

454. 4

510.

404. 4

460.

515. 5

410.

465. 5

521. 1

415. 5

471. 1

526. 6

421. 1

476. 6

532. 2 1000 537. 7 543. 3 548. 8 554. 4 560. 565. 5 571. 1 576. 6 582. 2 587. 7

1100

1200

1300

593. 3

648. 8

704. 4

598. 8

654. 4

710.

604. 4

660.

715. 5

610. 665. 5

721. 1

615. 5

671. 1

726. 6

621. 1

676. 6

732. 2

626. 6

682. 2

737. 7

632. 2

687. 7 743. 3

637. 7 693. 3

748. 8

643. 3

698. 8

754. 4

1400

1500

1600

760.

815. 5

871. 1

765. 5

821. 1

876. 6

771. 1

826. 6

882. 2

776. 6

832. 2

887. 7

782. 2

837. 7 893. 3

787. 7 843. 3

898. 8

793. 3

848. 8

904. 4

798. 8

854. 4

910.

804. 4

860. 915. 5

810.

865. 5

921. 1

1700

1800

1900

926. 6

982. 2

1037. 7

932. 2

987. 7 1043. 3

937. 7 993. 3

1048. 8

943. 3

998. 8

1054. 4

948. 8

1004. 4

1060.

954. 4

1010.

1065. 5

960. 1015. 5

1071. 1

965. 5

1021. 1 1076. 6

971. 1

1026. 6

1082. 2

976. 6

1032. 2

1087. 7 2000 1093. 3 1098. 8 1104. 4 1110. 1115. 5 1121. 1 1126. 6 1132. 2 1137. 7 1143. 3 2100

2200

2300

1148. 8

1204. 4

1260.

1154. 4

1210.

1265. 5

1160.

1215. 5

1271. 1

1 1 65. 5

1221. 1 1276. 6

1171. 1

1226. 6

1282. 2

1176. 6

1232. 2

1287. 7

1182. 2

1237. 7 1293. 3

1187. 7 1243. 3

1298. 8

1193. 3

1248. 8

1304. 4

1198. 8

1254. 4

1310. 2400

2500

2600

1315. 5

1371. 1

1426. 6

1321. 1

1376. 6

1432. 2

1326. 6

1382. 2

1437. 7

1332. 2

1387. 7 1443. 3

1337. 7 1393. 3

1448. 8

1343. 3

1398. 8

1454. 4

1348. 8

1404. 4

1460.

1354. 4

1410. 1465. 5

1360.

1415. 5

1471. 1

1365. 5

1421. 1 1476. 6 2700

2800

2900

1482. 2

1537. 7 1593. 3

1487. 7 1543. 3

1598. 8

1493. 3

1548. 8

1604. 4

1498. 8

1554. 4

1610.

1504. 4

1560. 1615. 5

1510.

1565. 5

1621. 1

1515. 5

1571. 1 1626. 6

1521. 1

1576. 6

1632. 2

1526. 6

1582. 2

1637. 7

1532. 2

1587. 7 1643. 3 3000 1648. 8 1654. 4 1660. 1665. 5 1671. 1 1676. 6 1682. 2 1687. 7 1693. 3 1698. 8 3100

3200

3300

1704. 4

1760.

1815. 5

1710.

1765. 5

1821. 1

1715. 5

1771. 1 1826. 6

1721. 1 1776. 6

1832. 2

1726. 6

1782. 2

1837. 7

1732. 2

1787. 7 1843. 3

1737. 7 1793. 3

1848. 8

1743. 3

1798. 8

1854. 4

1748. 8

1804. 4

1860.

1754. 4

1810. 1865. 5 3400

3500

3600

1871. 1

1926. 6

1982. 2

1876. 6

1932. 2

1987. 7

1882. 2

1937. 7 1993. 3

1887. 7 1943. 3

1998. 8

1893. 3

1948. 8

2004. 4

1898. 8

1954. 4

2010.

1904. 4

1960. 2015. 5

1910.

1965. 5

2021. 1

1915. 5

1971. 1 2026. 6

1921. 1 1976. 6

2032. 2 p 10 20 30 40 50 60 70 80 90

°c

0. 5

1. 1

1. 6

3. 3

3. 8

4. 4

5.

Examples: -246.0° F = -151.11° C-3.33 C = -154.44° C.

3702° F = 2071.1° C + 1.1° C = 2072.2° C.

242:5.5° F = 1326.66° C + 1.66° C + 0.27° C = 1328.61° C.
3

TABLE 2.—Continued

°F to °C

10 20 30 40 50 60 70 80 90

3700

3800

3900

c

2037. 7 2093. 3

2148. 8

c

2043. 3

209S. 8

2154. 4

C

1048. 8

2104. 4

2160.

C

1054. 4

2110.

2165. 5

C

2060. 2115. 5

2171. 1

C

2065. 5

2121. 1 2176. 6

C

2071. 1

2126. 6

2182. 2

C

2076. 6

2132. 2

2187. 7

C

2082. 2 2137. 7 2193. 3

C

20S7. 7 2143. 3

2198. 8 4000 2204. 4 2210. 2215. 5 2221. 1 2226. 6 2232. 2 2237. 7 2243. 3 2248. 8 2254. 4 4100

4200

4300

2260.

2315. 5

2371. 1

2265. 5

2321. 1 2376. 6

2271. 1 2326. 6 23S2. 22276. 6

2332. 2

2387. 7

2282. 2 2337. 7 2393. 32287. 7 2343. 3

2398. 8

2293. 3 234S. 8

2404. 4

2298. 8

2354. 4

2410.

2304. 4

2360.

2415. 5

2310.

2365. 5 2421. 1 4400

4500

4600

2426. 6

24S2. 2 2537. 7

2432. 2

2487. 7

, 2543. 3

2437. 7 2493. 3

254S. 8

2443. 3

2498. 8

2554. 4

2448. 8

2504. 4

2560.

2454. 4

2510. 2565. 5

2460. 2515. 5 2571. 1

2465. 5

2521. 1 2576. 6

2471. 1 2526. 6

2582. 2

2476. 6

2532. 2

2587. 7 4700

4800

4900

2593. 3

2648. 8 2704. 4

2598. 8

2654. 4

2710.

2604. 4

2660. 2715. 5

2610. 2665. 5

2721. 1

2615. 5

2671. 1 2726. 6

2621. 1 2676. 6

2732. 2

2626. 6

2682. 2

2737. 7

2632. 2

2687. 7 2743. 3

2637. 7 2693: 3

2748. 8

2643. 3 2698. 8 2754. 4

5000 2760. 2765. 5 2771. 1 2776. 6 27S2. 2 2787. 7 2793. 3 279S. 8 2804. 4 2810.

O Jl o

5100

5200

5300

2S15. 5

2871. 1 2926. 6

2821. 1 2876. 6

2932. 2

2S26. 6

2882. 2

2937. 7

2S32. 2

2S87. 7 2943. 3

2837. 7 2893. 3

294S. 8

2843. 3

2898. 8

2954. 4

2848. 8 2904. 4

2960.

2854. 4

2910.

2965. 5

2860.

2915. 5

2971. 1

2865. 5

2921. 1 2976. 6

1230.

1.1.

5

16

5400

5500

5600

29S2. 2

3037. 7 3093. 3

2987. 7 3043. 3

3098. 8

2993. 3

3048. 8

3104. 4

299S. 8

3054. 4

3110.

3004. 4

3060.

3115. 5

3010.

3065. 5

3121. 1

3015. 5

3071. 1 3126. 6

3021. 1 3076. 6

3132. 2

3026. 6

3082. 2

3137. 7

3032. 2

3087. 7 3143. 3

4

56

2.

2.

3.

£13

5700

5800

5900

3148. 8

3204. 4

3260.

3154. 4

3210.

3265. 5

3160. 3215. 5

3271. 1

3165. 5

3221. 1 3276. 6

3171. 1 3226. 6 3282. 2

3176. 6

3232. 2

32S7. 7

3182. 2

3237. 7 3293. 3

3187. 7 3243. 3

3298. 8

3193. 3

3248. 8 3304. 4

3198. 8 3254. 4 3310.

7

8

9

3.

4.

5.

S4

0'

6000 3315. 5 3321. 1 3326. 6 3332. 2 3337. 7 3343. 3 3348. 8 3354. 4 3360. 3365. 5

6100

6200

6300

3371. 1 3426. 6

3482. 2

3376. 6

3432. 2 34S7. 7

3382. 2

3437. 7 3493. 3

33S7. 7 3443. 3

3498. 8

3393. 3

3448. 8

3504. 4

3398. 8

3454. 4

3510.

3404. 4

3460. 3515. 5

3410.

3465. 5

3521. 1

3415. 5

3471. 1 3526. 6

3421. 1 3476. 6

3532. 2

6400

6500

6600

3537. 7 3593. 3

364S. 8

3543. 3

3598. 8

3654. 4

3548. 8

3604. 4 3660.

3554. 4

3610.

3665. 5

3560.

3615. 5

3671. 1

3565. 5

3621. 1 3676. 6

3571. 1

3626. 6

3682. 2

3576. 6

3632. 2 3687. 7

3582. 2

3637. 7 3693. 3

3587. 7 3643. 3 3698. 8

6700

6800

6900

3704. 4

3760.

3815. 5

3710.

3765. 5

3821. 1

3715. 5

3771. 1

3826. 6

3721. 1 3776. 6

3832. 2

3726. 6

3782. 2 3S37. 7

3732. 2 3787. 7 3843. 3

3737. 7 3793. 3

3848. 8

3743. 3

379S. 8

3854. 4

3748. 8

3804. 4

3860.

3754. 4

3810.

3865. 5 7000 3871. 1 3876. 6 3882. 2 38S7. 7 3893. 3 3898. 8 3904. 4 3910. 3915. 5 3921. 1

7100

7200

7300

3926. 6

3982. 2

4037. 7

3932. 2

3987. 7 4043. 3

3937. 7 3993. 3

404S. 8

3943. 3

3998. 8

4054. 4

3948. 8 4004. 4

4060.

3954. 4

4010.

4065. 5

3960. 4015. 5

4071. 1

3965. 5

4021. 1 4076. 6

3971. 1 4026. 6

4082. 2

3976. 6

4032. 2

4087. 7 7400

7500

7600

4093. 3

4148. 8

4204. 4

4098. 8

4154. 4

4210.

4104. 4

4160. 4215. 5

4110.

4165. 5

4221. 1

4115. 5

4171. 1 4226. 6

4121. 1 4176. 6 4232. 24126. 6

4182. 2

4237. 7

4132. 2

4187. 7 4243. 3

4137. 7 4193. 3 4248. 84143. 3

419S. 8 4254. 4

7700

7800

7900

4260. 4315. 5 4371. 14265. 5 4321. 1 4376. 6

4271. 1 4326. 6 4382. 2

4276. 6

4332. 2 4387. 7

4282. 2 4337. 7 4393. 3

4287. 7 4343. 3

4398. 8

4293. 3

4348. 8 4404. 4

4298. 8

4354. 4

4410.

4304. 4

4360.

4415. 5

4310.

4365. 5

4421. 1 F 10 20 30 40 50 60 70 80 1 90

\
4

Table 3.The chemical elements: Their atomic numbers, symbols, and weights, and their melting

points on the International Temperature Scale

(For International Temperature Scale, see BS J. Research 1, 635 (1928) RP22)

Temperatures below —190° C are on the Centigrade Thermodynamic Scale. The atomic weights given constitute the complete list of the International Weights of 1941 as approved and

reported by the Committee on Atomic Weights of the International Union of Chemistry.

< a

89

13

51

1833

56

4

83

535

48

20

658

55

172427

4129

6668

63

964

3132

79

72

267

1

6149

53

7726

36

57

82

3

71122543

80

•so

° &

Ac

AlSb

A

AsBa

Be

Bi

B

BrCd

Ca

C

Ce

Cs

CICr

Co

Cb

Cu

Dy

ErEu

F

Gd

Ga

Ge

Au

Hf

He

Ho

H

IIIn

IIrFe

Kr

La

Pb

LiLu

Mg

Mn

Ma

gg

Name of element

Actinium

Aluminum

Antimony

Argon

Arsenic Barium

Beryllium

Bismuth

Boron Bromine

Cadmium

Calcium

Carbon

Cerium

Cesium

Chlorine

Chromium

Cobalt.... Columbium

Copper

Dysprosium

Erbium.... Europium

Fluorine Gadolinium

Gallium

Germanium

Gold

Hafnium

Helium

Holmium

Hydrogen

H2 (normal).

HD.

D'2 (normal).

Illinium .. Indium

Iodine Iridium

Iron Krypton

Lanthanum

Lead

Lithium

Lutecium

Magnesium

Manganese

Masurium

Mercury..

Melting point

223 ±10

29. 958

1063. 1700 -271.

78 ± 0. 02 ±10

±0.

4 ±.2

-259.

-259.

-256.

-254.

±. 1 ±. 1 ±. 2 ±. 2

156

114 2454

1539 -157

826

327

186

.

±. 1 ±1

±3

±3

±0. 5 ±5

±0. 1 ±5

650

1260 2700

-38.

±2

±20

87 ±0.02

°C

* 1600

660. ±0. 1 26. 97

630. 5 ±. 1 121. 76 -189. 4 ±. 2 39. 944

b 814 74. 91 704 ±20 137. 36

1280 ±40 9. 02

271. 3 ±0. 1 209. 00 2040 ±50 10. 82 -7. 2 ±0. 2 79. 916

320. 9 ±. 1 112. 41 850 ±20 40. 08

3700 ±100 12. 010

600 ±50 140. 13 28 ±2 132. 91 -101 ±2 35. 457

1800 ±50 52. 01 1495 ±2 58. 94 2500 ±50 92. 91

1083. 2 ±0. 1 63.57

Atomic

weight

162. 46

167. 2

152.

19. 00

156. 9

69. 72

72. 60

197. 2

178. 6

4. 003

164. 94

1.0080

114. 76

126. 92

193. 1 55. 85

83. 7

138. 92

207.21

6. 940

174. 99

24. 32

54. 93

200. 61

.rt CD

42

60

1028

776

8 46

15

78

84

1959

918886

75

45

3744

62

2134

1447

1138

16

7352

65

8190

6950

22

7492

2354

70

39

3040

8587

.a o s £ <! to Mo

Nd

Ne

Ni

N

Os

O

Pd

P

PtPo

K

PrPa

Ra

Rn

Re

Rh

Rb

Ru

Sm

Sc

Se

SiAg

Na"

SrS

Ta

Te

Tb

TlTh

Tm

Sn

TiW

U

V

Xe

Yb

Y

Zn

Zr

Name of element

Molybdenum

Neodymium

Neon..

Nickel

Nitrogen

Osmium

Oxygen

Palladium

Phosphorus, Y... Phosphorus, R... Platinum

Polonium

Potassium

PraseodymiumProtactinium

Radium

Radon

Rhenium

Rhodium

Rubidium..

Ruthenium

Samarium

Scandium

Selenium

Silicon

Silver Sodium

Strontium

Sulfur: Monoclinic

Rhombic

Tantalum. _. Tellurium

Terbium

Thallium

Thorium

Thulium

Tin

Titanium

Tungsten

Uranium

Vanadium

Xenon

Ytterbium

Yttrium

Zinc Zirconium

Element 85 Element 87

Melting point

°C

2625

840 - 248. 6 1455 -210.

2700

-218. 8 1554

44. 1

d 590

1773. 5 600

63 940

* 3000

700

-71

3170

1966

39 2500

>1300

1200 220

1415

960. 5

97. 7 770

119. 2

112. 8 3000

450

327

300

1800

231. 9 1820 3410

1133 1735 -112

1800 1490

419. 5 1750 250

a 23

±50

±40

±0. 3 ±1

±0. 1 ±200

±0. 1 ±1

±0. 1 ±1

±0. 2 ±. 2 ±100

±10

±5

±3

±150

±0. 1 ±100

±20

±3

±50

±1

±200

±0. 1 ±700

±1 39. 096

±50 140. 92

231

226. 05 222 ±60 186. 31 ±3 102. 91 ±1 85. 48 ±100 101. 7

150. 43

45. 10 ±5 78. 96 ±20 28. 06 ±0. 107. 880 ±. 2 22. 997 ±10 87. 63

32. 06

1 Computed. k At 3G atmospheres. 1 At 30 atmospheres. d At 43 atmospheres.

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