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1、的常数A、B、C。其公式如下lgP=A-B/(t+C)(1)式中：P物质的蒸气压，毫米汞柱；t温度，C公式(1)适用于大多数化合物；而对于另外一些只需常数B与C值的物质，则可采用(2)公式进行计算lgP=-52.23B/T+C(2)式中：P物质的蒸气压，毫米汞柱；表1不同物质的蒸气压名称分子式范围(C)AB1,1,2-三氯乙烷C2H3C136.851891262.5701,1,2一三氯乙烯C2HC137.028081315.0401,2一丁二烯C4H6-60+807.161901121.0001,3一丁二烯C4H6-80+656.85941935.5312-甲基丙烯-1C4H86.841349
2、23.2002-甲基丁二烯-1,3C5H8-50+956.903341080.966a-甲基綦C11H107.068991852.674a-萘酚C10H8O7.284212077.5600-甲基萘C11H107.068501840.2680-萘酚C10H8O7.347142135.000氨NH3-83+607.554661002.711氨基甲酸乙酯C3H7O2N7.421641758.210钡Ba9301130公式(2)350.000苯C6H66.905651211.033苯胺C6H7N7.241791675.300苯酚C6H6O7.136171518.100苯甲醇C7H8O201137.81
3、8441950.300苯甲醇C7H8O1133006.959161461.640苯甲醚C7H8O6.989261453.600苯甲酸C7H6O260110公式(2)63.820C205.170230.000251.000239.554240.000234.668197.716184.000198.395183.000247.885205.00015.765220.790200.000175.000194.360153.000200.0009.033苯甲酸甲酯C8H8O2251007.431201871.500213.900苯甲酸甲酯C8H8O21002607.078321656.25095.2
4、30苯乙烯C8H86.924091420.000206.000铋Bi12101420公式(2)200.0008.876蓖C14H10100160公式(2)72.0008.910蓖C14H10223342公式(2)59.2197.910蓖醌C14H3O2224286公式(2)110.05012.305蓖醌C14H3O2285370公式(2)63.9858.002丙酸C3H6O20607.715531690.000210.000丙酸C3H6O2601857.350271497.775194.120丙酮C3H6O7.024471161.000224.000丙烷C3H86.82973813.20024
5、8.000丙烯C3H66.81960785.000247.000丙烯腈C3H3N-20+1407.038551232.530222.470铂Pt14251765公式(2)486.0007.786草酸C2H2O455105公式(2)90.50312.223臭氧O36.72602566.950260.000醋酸甲酯C3H6O27.202111232.830228.000氮N2-210-1806.86606308.365273.200碲化氢H2Te-460公式(2)22.7607.260碘I27.263041697.870204.000碘化钾KI8431028公式(2)157.6008.096碘化钾
6、KI10631333公式(2)155.7007.949碘化钠Nal10631307公式(2)165.1008.371碘化氢HI-97-51公式(2)24.1608.259碘化氢HI-50-34公式(2)21.5807.630丁烯-1C4H86.84290926.100240.000氡Rn6.69640717.986250.000对二甲苯C8H106.990521453.43000215.307对甲酚C7H8O7.005921493.000160.000对硝基苯胺C6H6O2N2190260公式(2)77.3459.560对硝基甲苯C7H7O2N80240公式(2)49.9507.982二苯胺C
7、12H11N278284公式(2)57.3508.008二苯基甲烷C13H12217283公式(2)52.3607.967二苯醚C12H10O251477.453102115.200206.800二苯醚C12H10O1473257.098941871.920185.840二甲胺C2H7N-80-307.420611085.700233.000二甲胺C2H7N-30+657.185531008.400227.353二甲替甲酰胺C3H7ON15607.343801624.700216.200二甲替酰胺C3H7ON603506.996081437.840199.830二硫化碳CS2-10+1606.
8、851451122.500236.460二氧化硅SiO218602230公式(2)506.00013.430二氧化硫SO27.327761022.800240.000二氧化氯C1O2-59+11公式(2)27.2607.893二氧化碳CO29.641771284.070268.432二氧化硒SeO26.577811879.810179.000二乙胺C4H11N-30+1006.831881057.200212.000二乙基酮C5H10O6.857911216.300204.000顺-2-丁烯C4H86.86926960.100237.000反-2-丁烯C4H86.86952960.800240
9、.000非C14H10203347公式(2)57.2477.771咲喃C4H4O-35+906.975331010.851227.740氟苯C6H5F-40+1806.936671736.350220.000氟化钾KF12781500公式(2)207.5009.000氟化锂LiF13981666公式(2)218.4008.753氟化钠NaF15621701公式(2)218.2008.640氟化氢HF-55+1058.380361952.550335.520钙Ca500700公式(2)195.0009.697钙Ca9601100公式(2)370.00016.240镉Cd150320.9公式(2)
10、109.0008.564镉Cd500840公式(2)99.9007.897汞Hg1002007.469051771.898244.831汞Hg2003007.732403003.680262.482汞Hg3004007.690592958.841258.460汞Hg4008007.753103068.195273.438钻Co2374公式(2)309.0007.571光气COCI2-68+686.84297941.250230.000硅Si12001320公式(2)170.0005.950过氧化氢H2O21090公式(2)48.5308.853氦He16.13130282.126290.000
11、环戊烷C5H106.886761124.162231.361环氧丙烷(1,2)C3H6O-35+1307.064921113.600232.000环氧乙烷C2H4O-70+1007.407831181.310250.600环已烷C6H12-502006.844981203.526222.863甲胺CH5N-93-456.91831883.054223.122甲胺CH5N-45+506.91205838.116224.267甲苯C7H86.954641341.800219.482甲醇CH4O-20+1407.878631473.110230.000甲硅烷SiH4-160112公式(2)12.6906.996甲醚C2H6O6.73669791.184230.000甲酸CH2O26.944591295.260218.000甲酸甲酯C2H4O27.136231111.000229.200甲酸乙酯C3H6O2-30+2357.117001176.600223.400甲烷CH47.69540532.200275.000甲烷液体6.61184339.93000266
