Seawater ·
Major Ions
un
seel
.com · salinity 35‰ · six ions ≈ 99.4% · constant proportions
Salinity
≈ 35 g/kg
Surface pH
≈ 8.1
phase
—
Cl⁻ chloride 55%
Na⁺ sodium 31%
SO₄²⁻ sulfate 8%
Mg²⁺ magnesium 4%
Ca²⁺ · K⁺ 2%
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Un
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.com · Seawater Composition