Water Density vs Pressure Calculator

Based on the provided search results, I’ll create a comprehensive table summarizing water density vs pressure, along with key information you need to know:

Pressure (MPa)	Density at 20°C (kg/m³)	Density at 100°C (kg/m³)
0.1 (1 atm)	998.21	958.43
10	1002.7	963.2
50	1019.8	981.5
100	1040.2	1003.1
500	1137.8	1108.1
1000	1220.3	1196.3

Key points about water density and pressure:

1. Pressure Effect: As pressure increases, water density increases34.
2. Temperature Effect: At a given pressure, water density generally decreases as temperature increases14.
3. Compressibility: Water is slightly compressible. Its density changes more significantly at higher pressures3.
4. Bulk Modulus: The bulk modulus of water at 15°C is approximately 2.15 GPa, which affects its compressibility34.
5. Calculation: The density of water under pressure can be calculated using the equation:
   ρ₁ = ρ₀ / (1 – (p₁ – p₀) / E)
   where ρ₁ is the final density, ρ₀ is the initial density, p₁ is the final pressure, p₀ is the initial pressure, and E is the bulk modulus4.
6. Anomalies: Water exhibits density anomalies, particularly at low temperatures. Its maximum density occurs at about 4°C at atmospheric pressure5.
7. Phase Changes: Under very high pressures, liquid water can transition to various ice phases with different densities5.
8. Supercritical Water: Above the critical point (374°C and 22.1 MPa), water becomes a supercritical fluid with unique properties4.
9. Measurement Accuracy: In oceanography, water density is typically measured to an accuracy of ±0.004 kg/m³2.
10. Practical Applications: Understanding water density changes with pressure is crucial in various fields, including oceanography, engineering, and climate science24.

This information provides a comprehensive overview of how water density changes with pressure, which is essential for many scientific and engineering applications.