La densidad (me) del agua a una determinada temperatura (tem) puede calcularse con la formula de Heggen (1983):
me = 1000 – 1.9549 · 10-2 · /tem - 4/1.68
En la cual:
me = densidad del agua en kg/m3
tem = temperatura del agua en º centigrados
ºC kg/m3 ºC kg/m3 ºC kg/m3 ºC kg/m3 ºC kg/m3
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0 999.80 1 999.88 2 999.94 3 999.98 4 1000.00
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5 999.98 6 999.94 7 999.88 8 999.80 9 999.71
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10 999.60 11 999.49 12 999.36 13 999.22 14 999.06
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15 998.90 16 998.73 17 998.55 18 998.35 19 998.15
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20 997.94 21 997.72 22 997.49 23 997.25 24 997.00
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25 996.75 26 996.48 27 996.21 28 995.93 29 995.64
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30 995.34 31 995.04 32 994.72 33 994.40 34 994.08
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35 993.74 36 993.40 37 993.05 38 992.69 39 992.32
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40 991.95 41 991.57 42 991.19 43 990.79 44 990.39
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45 989.99 46 989.57 47 989.15 48 988.72 49 988.29
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50 987.85 51 987.40 52 986.95 53 986.49 54 986.02
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55 985.55 56 985.07 57 984.59 58 984.09 59 983.60
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60 983.09 61 982.58 62 982.07 63 981.54 64 981.01
_______________________________________________________________
65 980.48 66 979.94 67 979.39 68 978.84 69 978.28
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70 977.72 71 977.15 72 976.57 73 975.99 74 975.40
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75 974.81 76 974.21 77 973.61 78 973.00 79 972.38
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80 971.76 81 971.13 82 970.50 83 969.86 84 969.22
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85 968.57 86 967.91 87 967.25 88 966.59 89 965.92
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90 965.24 91 964.56 92 963.87 93 963.18 94 962.48
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95 961.78 96 961.07 97 960.36 98 959.64 99 958.91
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100 958.18 101 957.45 102 956.71 103 955.97 104 955.22
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Si utilizamos la formula de McCutcheon, Martin y Barnwell tendremos estos otros resultados:
ºC kg/m3 ºC kg/m3 ºC kg/m3 ºC kg/m3 ºC kg/m3
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0 999.87 1 999.93 2 999.97 3 999.99 4 1000.00
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5 999.99 6 999.97 7 999.93 8 999.88 9 999.81
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10 999.73 11 999.63 12 999.53 13 999.41 14 999.27
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15 999.13 16 998.97 17 998.80 18 998.62 19 998.43
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20 998.23 21 998.02 22 997.80 23 997.57 24 997.33
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25 997.08 26 996.81 27 996.54 28 996.26 29 995.98
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30 995.68 31 995.37 32 995.06 33 994.73 34 994.40
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35 994.06 36 993.72 37 993.36 38 993.00 39 992.63
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40 992.25 41 991.86 42 991.47 43 991.07 44 990.66
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45 990.24 46 989.82 47 989.39 48 988.96 49 988.51
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50 988.06 51 987.61 52 987.14 53 986.67 54 986.20
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55 985.72 56 985.23 57 984.73 58 984.23 59 983.72
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60 983.21 61 982.69 62 982.17 63 981.63 64 981.10
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65 980.55 66 980.00 67 979.45 68 978.89 69 978.32
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70 977.75 71 977.17 72 976.59 73 976.00 74 975.40
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75 974.80 76 974.20 77 973.59 78 972.97 79 972.35
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80 971.72 81 971.09 82 970.45 83 969.81 84 969.16
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85 968.51 86 967.85 87 967.19 88 966.52 89 965.84
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90 965.16 91 964.48 92 963.79 93 963.10 94 962.40
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95 961.69 96 960.98 97 960.27 98 959.55 99 958.83
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100 958.10 101 957.36 102 956.62 103 955.88 104 955.13
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