Current Industrial Reports U.S. Department of Commerce Economics and Statistics Administration Bureau of the Census Industrial Gases - 1997 MA28C(97)-1 Issued September 29, 1998 Information about the scope of the survey, methodology, explanation of terms and historical notes for this survey may be found in the introduction of the 1996 Manufacturing Profiles, issued July, 1998. These data are also available through the U.S. Department of Commerce and STAT-USA Electronic Bulletin Board by subscription. To access, dial 202-482-3870 and follow the prompts to register. Also, you may call 202-482-1986 or 1-800-STAT-USA, for further information. The Internet address is: stat-usa.gov/. For fax or mail copies of the publication, contact the Manufacturing and Construction Division Information Center, 301-457-4673. Address inquiries concerning these data to U.S. Department of Commerce, Bureau of the Census, Manufacturing and Construction Division, Washington, DC 20233, or call Suzanne Conard, 301-457-4791. Table 1. Production and Shipments of Selected Industrial Gases: 1994 to 1997 [Value in Millions of dollars] Shipments Product Product Unit code and year of measure Production Quantity Value 28132 00 Acetylene: 1997......... Bil. cu. ft..... 5.2 3.1 147.3 1996......... .....do......... 5.5 3.3 158.7 1995......... .....do......... 5.9 3.4 155.0 1994......... .....do......... 5.3 2.9 143.3 28133 00 Carbon dioxide: Gas: 1997....... 1,000 short tons 5,268.9 4,575.9 51.6 1996....... .....do......... 4,899.7 4,462.9 51.3 1995....... .....do......... 5,633.2 5,282.4 59.9 1994....... .....do......... 6,944.7 6,530.4 67.1 Liquid: 1997....... 1,000 short tons 6,659.2 6,610.4 306.2 1996....... .....do......... 6,661.6 6,528.6 r/313.9 1995....... .....do......... 6,409.6 6,057.2 369.0 1994....... .....do......... 5,898.4 5,728.9 238.7 Solid (dry ice 1997....... 1,000 short tons 377.7 378.6 37.3 1996....... .....do......... 320.0 300.2 r/33.4 1995....... .....do......... 300.4 297.9 35.1 1994....... .....do......... 288.0 288.1 30.9 28135 00 Nitrogen: 1997......... Bil. cu. ft..... 809.3 786.9 1,103.8 1996......... .....do......... 823.5 792.9 1,123.9 1995......... .....do......... 808.9 806.1 1,139.4 1994......... .....do......... 823.6 752.0 1,057.6 28136 00 Oxygen: 1997......... Bil. cu. ft..... 735.7 681.0 998.0 1996......... .....do......... 682.2 649.1 947.9 1995......... .....do......... 629.8 597.7 968.5 1994......... .....do......... 605.0 564.5 881.9 28137 pt. Hydrogen: 1997......... Bil. cu. ft..... 469.1 206.6 420.7 1996......... .....do......... r/385.7 r/165.9 r/365.3 1995......... .....do......... 351.7 138.4 310.8 1994......... .....do......... 331.0 126.6 273.4 pt. Part. r/ Revised by 5 percent or more from previously published data. Table 2. Quantity of Primary Production of Specified Industrial Gases: 1997 and 1996. [Quantity in million cubic feet, unless otherwise noted. Value in thousands of dollars] 1997 1996 Product description Shipments Shipments Product code Production Quantity Value Production Quantity Value 2813- -- Industrial gases.................. (X) (X) 3,657,162 (X) (X) 3,585,651 28132 00 Acetylene/1....................... 5,248 3,080 147,280 5,512 3,264 158,682 28132 11 Produced for compression, including cylinder and pipeline................... 808 838 68,235 947 920 80,754 28132 21 Produced for pipeline shipment, excluding that shipped to be compressed, and for consumption in same plant...... 4,440 2,242 79,045 4,565 2,344 77,928 28133 00 Carbon dioxide (short tons)/2..... 12,305,794 11,564,966 395,087 11,881,366 11,291,676 r/398,634 28133 01 Gas, including amounts produced and liquefied (short tons)..... 5,268,818 4,575,941 51,558 4,899,728 4,462,891 51,293 28133 02 Liquid, including amounts produced and used to make dry ice (short tons)........... 6,659,243 6,610,417 306,218 6,661,626 6,528,559 r/313,917 28133 31 Solid, (dry ice) (short tons)... 377,733 378,608 37,311 320,012 300,226 r/33,424 28135 00 Nitrogen/3........................ 809,292 786,935 1,103,844 823,467 792,916 1,123,868 Gas produced by: 28135 22 Cryogenic on-site and pipeline/4.................... (D) (D) (D) (D) (D) (D) 28135 23 Non cryogenic processes (psa, vpsa, membranes, etc.)/4..... 520,177 522,369 398,499 r/533,523 r/529,765 429,503 Captive uses for consumption in same plant: 28135 24 Cryogenic processes/5......... (D) (X) (X) (D) (X) (X) 28135 26 Non cryogenic processes (psa, vpsa, membranes, etc.)/5..... (D) (X) (X) (D) (X) (X) Liquid produced for: 28135 12 Merchant shipment............. 240,067 244,619 640,799 247,189 247,117 635,087 28135 32 Consumption in same plant/5... 26,936 (X) (X) r/26,433 (X) (X) 28135 34 Supplemental shipments or uses....................... 22,112 19,947 64,546 16,322 16,034 59,278 28136 00 Oxygen............................ 735,732 681,011 998,032 682,234 649,144 947,869 Gas produced by: 28136 22 Cryogenic on-site and pipeline/6................ (D) (D) (D) (D) (D) (D) 28136 23 Non cryogenic processes (psa, vpsa, membranes, etc.)/6..... 576,859 553,183 558,667 528,735 524,661 570,670 Captive uses for consumption in same plant: 28136 24 Cryogenic processes/7......... (D) (X) (X) (D) (X) (X) 28136 26 Non cryogenic processes (psa, (D) (X) (X) (D) (X) (X) vpsa, membranes, etc.)/7..... Liquid produced for: 28136 12 Merchant shipment............. 111,278 111,780 386,554 112,225 111,485 334,980 28136 32 Consumption in this plant/7... 30,958 (X) (X) 26,537 (X) (X) 28136 34 Supplemental shipments or uses....................... 16,637 16,048 52,811 14,737 12,998 42,219 28137 00 Elemental gases and other industrial gases, n.e.c.......... (X) (X) 965,786 (X) (X) 911,834 Argon........................... (D) (D) (D) (D) (D) (D) 28137 11 Argon, crude.................. (D) (D) (D) (D) (D) (D) 28137 15 Argon, high purity, produced for cylinder and bulk delivery, pipeline shipments, and for consumption in same plant.... 17,672 17,286 311,249 r/17,243 r/16,817 r/317,759 Helium/8........................ (X) 3,854 (X) (X) 3,414 (X) Hydrogen/9...................... 469,140 206,640 420,672 r/385,660 r/165,897 r/365,281 Gas produced for: 28137 22 Merchant shipment/10........ (D) (D) (D) (D) (D) (D) 28137 32 Pipeline and on-site use/10. (D) (D) (D) (D) (D) (D) 28137 42 Consumption in same plant... 247,414 (X) (X) 207,101 (X) (X) Liquid produced for: 28137 52 Merchant shipment/10........ (D) (D) (D) (D) (D) (D) Supplemental shipments or 28137 62 uses/10..................... 221,726 206,640 420,672 r/178,559 r/165,897 r/365,281 28137 90 Other elemental gases........... (X) (X) (D) (X) (X) (D) 28137 71 Nitrous oxide/11.................. (D) (D) (D) (D) (D) (D) 28137 98 Other compressed and liquefied gases/11/12........... (X) (X) 153,212 (X) (X) r/158,852 28130 00 Industrial gases, n.s.k........... (X) (X) 47,133 (X) (X) 44,764 D Withheld to avoid disclosing data for individual companies. n.e.c. Not elsewhere classified. n.s.k. Not specified by kind. r/ Revised by 5 percent or more from previously published data. X Not applicable. 1/ Excludes information from railroad ships, shipyards, welding shops, and small establishments using portable generators. 2/ Excludes quantities produced and consumed in plants manufacturing soda ash or urea. Carbon dioxide gas data should be used with caution since it includes data for gas produced in the production of petroleum, whose data is difficult to measure. 3/ Excludes amounts produced and consumed in the manufacturing of synthetic ammonia or ammonia derivatives. 4/ Product code 28135 22 has been combined with product code 28135 23 to avoid disclosing data for individual companies. 5/ Product codes 28135 24 and 28135 26 are combined with product code 28135 32 to avoid disclosing data for individual companies. 6/ Product code 28136 22 has been combined with product code 28136 23 to avoid disclosing data for individual companies. 7/ Product codes 28136 24 and 28136 26 are combined with product code 28136 32 to avoid disclosing data for individual companies. 8/ Source: United States Geological Surveys 9/ Excludes amounts vented, used as fuel, etc., and amounts produced and consumed in the manufacturing of synthetic ammonia and methanol, but includes an unspecified amount produced for sale or interplant transfer to plants consuming this gas in the production of ammonia. Also excludes amounts produced by the ammonia dissociation process {cracking of ammonia). Also excludes amounts produced in petroleum refineries for captive use. 10/ Product codes 28137 22, 28137 32, 28137 52 and 28137 62 are combined to avoid disclosing data for individual companies. 11/ Product codes 28137 71 and 28137 98 are combined to avoid disclosing data for individual companies. 12/ Excludes hydrocarbon gases such as propane, butane, and propylene, or halogenated hydrocarbons and cyclopropane. Also excludes sulpher dioxide and chlorine data, which are shown in the Current Industrial Reports Series MA28A(97)-1 Inorganic Chemicals. Note: N.s.k. represents the value of shipments for establishments which did not provide detailed information by type of product. These establishments, typically with less than 5 employees, are not included on the MA28C mailing panel. The n.s.k. value has been estimated based on the rate of change for the reporting establishments applied to the previous years' data. Table 3. Production and Shipments of Acetylene by Geographic Area: 1997 and 1996 [Quantity in million cubic feet. Value in thousands of dollars] 1997 1996 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total............. 5,248 3,080 147,280 5,512 3,264 158,682 Northeast Region........ 113 112 10,598 94 96 9,149 North Central Region.... 193 243 18,064 231 222 22,455 East North Central.... 129 122 12,913 156 149 16,382 West North Central.... 64 121 5,151 75 73 r/6,073 South Region............ 4,825 2,609 105,887 5,031 2,789 109,930 South Atlantic/ East South Central.... 742 722 47,056 737 717 47,268 West South Central.... 4,083 1,887 58,831 4,294 2,072 62,662 West Region............. 117 116 12,731 156 157 17,148 Mountain.............. 26 25 2,957 32 33 3,355 Pacific............... 91 91 9,774 124 124 13,793 r/ Revised by 5 percent or more from previously published data. See note at end of Table 6 for explanation of geographic areas. Table 4. Production and Shipments of Carbon Dioxide by Geographic Area: 1997 and 1996 [Quantity in short tons. Value in thousands of dollars] Liquid Solid Geographic area Shipments Shipments Production Quantity Value Production Quantity Value 1997 Total............. 6,659,243 6,610,417 306,218 377,733 378,608 37,311 Northeast Region/1...... (D) (D) (D) (D) (D) (D) North Central Region.... 1,874,503 1,826,863 82,603 172,309 172,148 15,220 East North Central/1.. 1,318,164 1,297,341 63,459 83,390 84,585 7,785 West North Central.... 556,339 529,522 19,144 88,919 87,563 7,435 South Region............ 3,668,635 3,692,111 172,219 106,975 106,469 12,399 South Atlantic/ East South Central.... 2,135,561 2,168,129 90,910 53,727 53,241 5,698 West South Central.... 1,533,074 1,523,982 81,309 53,248 53,228 6,701 West Region............. 1,116,105 1,091,443 51,396 98,449 99,991 9,692 Mountain.............. 363,457 337,159 19,460 20,631 21,222 1,602 Pacific............... 752,648 754,284 31,936 77,818 78,769 8,090 1996 Total............. 6,661,626 6,528,559 313,917 320,012 300,226 r/33,424 Northeast Region/1...... (D) (D) (D) (D) (D) (D) North Central Region.... 1,890,058 1,824,423 80,838 152,359 144,344 15,658 East North Central/1.. 1,272,812 1,241,962 60,587 86,021 79,936 10,411 West North Central.... 617,246 582,461 20,251 66,338 64,408 5,247 South Region............ r/3,666,768 r/3,618,045 r/174,653 r/111,746 r/101,199 r/11,443 South Atlantic/ East South Central.... r/2,156,476 r/2,133,295 r/105,485 63,239 53,729 5,789 West South Central.... 1,510,292 1,484,750 69,168 r/48,507 r/47,470 r/5,654 West Region............. 1,104,800 1,086,091 58,426 r/55,907 r/54,683 r/6,323 Mountain.............. r/301,870 r/275,838 r/17,935 r/15,287 r/15,287 r/886 Pacific............... 802,930 810,253 40,491 40,620 39,396 5,437 D Withheld to avoid disclosing data for individual companies. r/ Revised by 5 percent or more from previously published data. 1/ Totals for Northeast region are combined with East North Central to avoid disclosing data for individual companies. See note at end of Table 6 for explanation of geographic areas. Table 5. Production and Shipments of Argon and Hydrogen by Geographic Area: 1997 and 1996 [Quantity in million cubic feet. Value in thousands of dollars] Argon 1997 1996 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total............. (D) (D) (D) (D) (D) (D) Northeast Region........ 1,726 1,759 31,769 1,641 1,643 27,978 North Central Region ... (D) (D) (D) (D) (D) (D) East North Central.... 6,448 6,463 113,922 r/6,973 r/6,988 r/119,256 West North Central.... (D) (D) (D) (D) (D) (D) South Region............ 9,313 8,889 153,020 8,542 8,134 145,105 South Atlantic........ 1,695 1,701 33,594 1,655 1,647 31,811 East South Central.... 1,324 1,325 26,926 1,458 1,458 24,129 West South Central.... 6,294 5,863 92,500 5,429 5,029 89,165 West Region............. 1,622 1,645 28,724 1,538 1,505 36,514 Hydrogen 1997 1996 Shipments Shipments Production Quantity Value Production Quantity Value Total............. 469,140 206,640 420,672 r/385,660 r/165,897 r/365,281 Northeast Region........ 10,299 10,386 36,114 9,893 9,753 32,142 North Central Region ... 53,666 4,608 16,767 48,878 3,428 11,080 East North Central.... (D) (D) (D) (D) (D) (D) West North Central.... (D) (D) (D) (D) (D) (D) South Region............ 350,828 (D) (D) 308,630 (D) (D) South Atlantic........ 9,470 2,192 6,623 r/16,713 r/13,465 r/20,103 East South Central.... 7,280 (D) (D) r/6,976 (D) (D) West South Central.... 334,078 183,176 327,019 284,941 r/132,981 267,902 West Region............. 54,347 (D) (D) 18,259 (D) (D) D Withheld to avoid disclosing data for individual companies. r/ Revised by 5 percent or more from previously published data. See end of Table 6 for explanation of geographic areas. Table 6. Production and Shipments of Liquid Nitrogen and Oxygen Produced for Merchant Shipment by Geographic Area: 1997 and 1996 [Quantity in million cubic feet. Value in thousands of dollars] Nitrogen 1997 1996 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total............ 240,067 244,619 640,799 247,189 247,117 635,087 Northeast Region....... 49,212 48,846 124,767 46,899 47,903 114,158 North Central Region... 80,298 80,142 159,176 69,554 69,509 r/ 163,969 East North Central... (D) (D) (D) (D) (D) (D) West North Central... (D) (D) (D) (D) (D) (D) South Region........... 74,953 80,028 211,222 87,361 87,381 235,833 South Atlantic....... 34,198 39,442 90,766 39,778 39,773 100,360 East South Central... 12,539 12,525 31,781 r/17,490 r/17,264 46,495 West South Central... 28,216 28,061 88,675 30,093 30,344 88,978 West Region............ 35,604 35,603 145,634 43,375 42,324 121,127 Oxygen 1997 1996 Shipments Shipments Production Quantity Value Production Quantity Value Total............ 111,278 111,780 386,554 112,225 111,485 334,980 Northeast Region....... 21,042 21,061 63,158 20,821 20,843 60,734 North Central Region... 35,257 35,545 87,658 36,515 36,489 91,665 East North Central... (D) (D) (D) (D) (D) (D) West North Central... (D) (D) (D) (D) (D) (D) South Region........... 42,872 42,919 130,033 41,720 41,876 132,919 South Atlantic....... 17,649 17,759 52,325 20,355 20,453 59,889 East South Central... 6,515 6,512 19,000 9,433 9,396 28,658 West South Central... 18,708 18,648 58,708 11,932 12,027 44,372 West Region............ 12,107 12,255 105,705 13,169 12,277 49,662 D Withheld to avoid disclosing data for individual companies. r/ Revised by 5 percent or more from previously published data. Note: Northeast Region: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, and Pennsylvania. North Central Region: East North Central Division: Ohio, Indiana, Illinois, Michigan, and Wisconsin. West North Central Division: Minnesota, Iowa, Missouri, North Dakota, South Dakota, Nebraska, and Kansas. South Region: South Atlantic Division: Delaware, Maryland, District of Columbia, Virginia, West Virginia, North Carolina, South Carolina, Georgia, and Florida. East South Central Division: Kentucky, Tennessee, Alabama, and Mississippi. West South Central Division: Arkansas, Louisiana, Oklahoma, and Texas. West Region: Mountain Division: Montana, Idaho, Wyoming, Colorado, New Mexico, Arizona, Utah, and Nevada. Pacific Division: Washington, Oregon, California, Hawaii, and Alaska. Table 7. Quantity of Primary Production by Quarter, of Specified Industrial Gases: 1997 and 1996 [Production in million cubic feet, except where otherwise noted] Product First Second Third Fourth code Product description Year Total quarter quarter quarter quarter 28132 00 Acetylene/1........................... 1997 5,248 1,301 1,200 1,254 1,493 1996 5,512 1,342 1,368 1,359 1,443 28132 11 Produced for compression, including cylinder and pipeline.... 1997 808 212 204 185 207 1996 947 246 227 218 256 28132 21 Produced for pipeline shipment, excluding that shipped to be compressed, and for consumption in same plant...................... 1997 4,440 1,089 996 1,069 1,286 1996 4,565 1,096 1,141 1,141 1,187 Carbon dioxide:/2 28133 01 Gas including amounts produced and liquefied, (short tons)........ 1997 5,268,818 (S) (S) (S) (S) 1996 4,899,728 (S) (S) (S) (S) 28133 02 Liquid including amounts produced and used to make dry ice, (short tons).............. 1997 6,659,243 1,414,001 1,575,533 1,703,669 1,966,040 1996 6,661,626 1,525,513 1,665,407 1,791,977 1,678,729 28133 31 Solid, dry ice, (short tons)........ 1997 377,733 73,147 79,642 112,092 112,852 1996 320,012 73,602 76,802 89,604 80,004 Argon, high purity: 28137 15 Produced for cylinder and bulk delivery and pipeline shipments, and forconsumption in same plant... 1997 17,672 4,277 4,440 4,405 4,550 1996 r/17,243 r/4,139 r/4,311 r/4,311 r/4,482 Hydrogen/3............................ 1997 469,140 105,549 112,268 123,667 127,656 1996 r/385,660 r/86,916 r/92,560 r/89,916 r/116,268 Gas produced for: 28137 22 Merchant shipment/4............... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28137 32 Pipeline and on-site use/4........ 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28137 42 Consumption in same plant......... 1997 247,414 62,565 59,028 64,184 61,637 1996 207,101 47,633 49,705 43,491 66,272 Liquid produced for: 28137 52 Merchant shipment/4............... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28137 62 Other shipments or uses/4......... 1997 221,726 42,984 53,240 59,483 66,019 1996 r/178,559 r/39,283 r/42,855 r/46,425 r/49,996 28135 00 Nitrogen5/............................ 1997 809,292 201,512 200,064 202,755 204,931 1996 823,467 200,043 202,623 209,275 211,526 Gas produced by: 28135 22 Cryogenic on-site and pipeline/6.................... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28135 23 Non cryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies/6...................... 1997 520,177 130,929 128,380 129,004 131,864 1996 r/533,523 r/128,045 r/133,301 r/133,462 r/138,715 Captive uses for consumption in same plant (user owned): 28135 24 Cryogenic processes/7........... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28135 26 Non cryogenic processes (psa, vpsa, membrane etc.)/7......... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) Liquid produced for: 28135 12 Merchant shipment................. 1997 240,067 58,695 60,199 61,282 59,891 1996 247,189 61,798 59,325 64,269 61,797 28135 32 Consumption in same plant/7....... 1997 26,936 6,574 6,625 6,986 6,751 1996 r/26,433 r/6,609 r/6,080 r/7,137 r/ 6,607 28135 34 Other shipments or uses........... 1997 22,112 5,314 4,860 5,483 6,455 1996 16,322 3,591 3,917 4,407 4,407 28136 00 Oxygen................................ 1997 735,732 179,823 181,775 187,284 186,850 1996 682,234 163,736 170,558 170,559 177,381 Gas produced by: 28136 22 Cryogenic on-site and pipeline/8.................... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28136 23 Non cryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies/8...................... 1997 576,859 140,734 143,230 146,561 146,334 1996 528,735 126,897 132,184 137,471 132,183 Captive uses for consumption in same plant (user owned): 28136 24 Cryogenic processes/9........... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) 28136 26 Non cryogenic processes (psa, vpsa membrane etc.)/9.......... 1997 (D) (D) (D) (D) (D) 1996 (D) (D) (D) (D) (D) Liquid produced for: 28136 12 Merchant shipment................. 1997 111,278 27,161 27,367 28,210 28,540 1996 112,225 29,178 28,057 26,934 28,056 28136 32 Consumption in same plant/9....... 1997 30,958 7,544 7,128 8,323 7,963 1996 26,537 (S) (S) (S) (S) 28136 34 Other shipments or uses........... 1997 16,637 4,384 4,050 4,190 4,013 1996 14,737 3,536 3,389 3,536 4,276 D Withheld to avoid disclosing data for individual companies. r/ Revised by 5 percent or more from previously published data. S Does not meet publication standards. 1/ Excludes information from railroad ships, shipyards, welding shops, and small establishments using portable generators. 2/ Excludes quantities produced and consumed in plants manufacturing soda ash and urea. 3/ Excludes amounts vented, used as fuel, etc., and amounts produced and consumed in the manufacturing of synthetic ammonia and methanol, but includes an unspecified amount produced for sale or interplant transfer to plants consuming this gas in the production of ammonia. Also excludes amounts produced by the ammonia dissociation process (cracking of ammonia). Also excludes amounts produced in petroleum refineries for captive use. 4/ Product codes 28137 22, 28137 32, 28137 52, and 28137 62 are combined to avoid disclosing data for individual companies. 5/ Excludes amounts produced and consumed in the manufacturing of synthetic ammonia derivatives. 6/ Product code 28315 22 and 28135 23 are combined to avoid disclosing data for individual companies. 7/ Product code 28315 24, 28135 26 and 28135 32 are combined to avoid disclosing data for individual companies. 8/ Product code 28316 22 and 28136 23 are combined to avoid disclosing data for individual companies. 9/ Product code 28316 24, 28136 26 and 28136 32 are combined to avoid disclosing data for individual companies. Table 8. Production, Exports, Imports, and Apparent Consumption of Industrial Gases: 1997 and 1996 [Quantity in million cubic meters, unless otherwise noted] Percent Exports exports Percent Product Product of to manu- Imports imports code description Manu- domestic facturers' for Apparent to facturers' merchan- net con- con- apparent Year production dise/1 production sumption/2 sumption/3 consumption 28133 01 Carbon dioxide 28133 02 (gas, liquid and 28133 31 solid) (metric tons).. 1997 11,171,200 100,224 0.9 22,119 11,093,095 0.2 1996 10,785,904 70,461 0.7 18,946 10,734,389 0.2 28137 15 Argon, high purity.... 1997 500 263 52.6 27 264 10.2 1996 r/488 193 39.5 27 322 8.4 28137 22 28137 32 28137 42 Hydrogen.............. 1997 13,286 298 2.2 141 13,129 1.1 28137 52 1996 10,922 246 2.3 155 10,831 1.4 28137 62 28135 00 Nitrogen.............. 1997 22,919 80 0.3 171 23,010 0.7 1996 r/23,321 49 0.2 74 23,346 0.3 28136 00 Oxygen................ 1997 20,836 154 0.7 55 20,737 0.3 1996 19,321 143 0.7 14 19,192 0.1 r/ Revised by 5 percent or more from previously published data. 1/ Source: Bureau of the Census report EM 545, U.S. Exports. 2/ Source: Bureau of the Census report IM 145, U.S. Imports for Consumption. 3/ Apparent consumption is derived by subtracting exports from the total of production plus imports. Note: For comparison of Standard Industrial Classification (SIC)-Based product codes, Schedule B export numbers, and HTSUSA import numbers, see Table 9. Table 9. Comparison of Standard Industrial Classification-Based Product Codes with Schedule B Export Numbers, and HTSUSA Import Numbers: 1997 Product Export Import code Product description number/1 number/2 28133 01 Carbon dioxide 28133 02 (gas, liquid and solid) 28133 31 [metric tons]............ 2811.21.0000 2811.21.000 28137 15 Argon, high purity........ 2804.21.0000 2804.21.000 28137 22 28137 32 28137 42 Hydrogen.................. 2804.10.0000 2804.10.000 28137 52 28137 62 28135 00 Nitrogen.................. 2804.30.0000 2804.30.000 28136 00 Oxygen.................... 2804.40.0000 2804.40.000 1/ Source: 1997 edition, Harmonized System-Based Schedule B, Statistical Classification of Domestic and Foreign Commodities Exported from the United States. 2/ Source: Harmonized Tariff Schedule of the United States, Annotated (1997).