Celtic Sea Salt (Light Grey) - Complete Element List
At a glance
Light Grey Celtic® Sea Salt is predominantly chloride and sodium with smaller amounts of magnesium, calcium, and potassium. Many additional elements are present at trace or ultra-trace levels, often reported below a lab's stated detection threshold.
Chloride ≈ 54.0-54.3%
Sodium ≈ 33.96-34.50%
Magnesium ≈ 0.40-0.50%
Calcium ≈ 0.14-0.15%
Potassium ≈ 0.13-0.14%
pH ≈ 8.1
Values shown as ranges reflect multiple published lab reports. The table below preserves the reported percent-by-weight values from the source documents.
How to read this
Values below are listed as percent by weight of the original sample unless noted otherwise. "<" indicates the result was below the stated reporting threshold or near the lab's detection limit.
Major & trace minerals (percent of original sample)
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| Element | Symbol | % by Weight | Notes |
|---|---|---|---|
| Chloride | Cl | 54.00-54.30 | Dominant anion |
| Sodium | Na | 33.96-34.50 | Dominant cation |
| Sulfur | S | 1.17 | Trace macro |
| Magnesium | Mg | 0.396-0.504 | Key trace macro |
| Calcium | Ca | 0.141-0.151 | Trace macro |
| Potassium | K | 0.129-0.144 | Trace macro |
| Silicon | Si | 0.27 | From clay bed contact |
| Iron | Fe | 0.0143-0.0284 | Trace |
| Bromine | Br | 0.0403 | Halogen trace |
| Strontium | Sr | 0.0050 | Alkaline-earth trace |
| Phosphorus | P | <0.0395 | Below reporting threshold |
| Aluminum | Al | <0.0500 | Trace; clay contribution |
| Titanium | Ti | <0.0015 | Ultra-trace |
| Vanadium | V | <0.0006 | Ultra-trace |
| Chromium | Cr | <0.0004 | Ultra-trace |
| Manganese | Mn | <0.0003 | Ultra-trace |
| Cobalt | Co | <0.0002 | Ultra-trace |
| Nickel | Ni | <0.0001 | Ultra-trace |
| Copper | Cu | <0.0001 | Ultra-trace |
| Zinc | Zn | 0.000787-<0.0001 | Method dependent |
| Iodine | I | <0.0002 | Ultra-trace |
| Rubidium | Rb | <0.0007 | Ultra-trace |
| Zirconium | Zr | <0.0007 | Ultra-trace |
| Niobium | Nb | <0.0006 | Ultra-trace |
| Molybdenum | Mo | <0.0007 | Ultra-trace |
| Palladium | Pd | <0.0019 | Ultra-trace |
| Silver | Ag | <0.0025 | Ultra-trace |
| Cadmium | Cd | <0.0035 | Ultra-trace |
| Tin | Sn | <0.0059 | Ultra-trace |
| Antimony | Sb | <0.0074 | Ultra-trace |
| Tellurium | Te | <0.0537 | Ultra-trace |
| Cesium | Cs | <0.0059 | Ultra-trace |
| Gallium | Ga | <0.0001 | Ultra-trace |
| Germanium | Ge | <0.0001 | Ultra-trace |
| Barium | Ba | <0.0048 | Ultra-trace |
| Lanthanum | La | <0.0034 | Ultra-trace |
| Cerium | Ce | <0.0023 | Ultra-trace |
| Praseodymium | Pr | <0.0017 | Ultra-trace |
| Neodymium | Nd | <0.0014 | Ultra-trace |
| Samarium | Sm | <0.0010 | Ultra-trace |
| Europium | Eu | <0.0009 | Ultra-trace |
| Gadolinium | Gd | <0.0007 | Ultra-trace |
| Terbium | Tb | <0.0013 | Ultra-trace |
| Dysprosium | Dy | <0.0015 | Ultra-trace |
| Holmium | Ho | <0.0006 | Ultra-trace |
| Erbium | Er | <0.0007 | Ultra-trace |
| Thulium | Tm | <0.0006 | Ultra-trace |
| Ytterbium | Yb | <0.0005 | Ultra-trace |
| Lutetium | Lu | <0.0005 | Ultra-trace |
| Yttrium | Y | <0.0004 | Ultra-trace |
| Hafnium | Hf | <0.0004 | Ultra-trace |
| Tantalum | Ta | <0.0004 | Ultra-trace |
| Rhenium | Re | <0.0004 | Ultra-trace |
| Osmium | Os | <0.0004 | Ultra-trace |
| Iridium | Ir | <0.0003 | Ultra-trace |
| Ruthenium | Ru | <0.0013 | Ultra-trace |
| Rhodium | Rh | <0.0016 | Ultra-trace |
| Platinum | Pt | <0.0004 | Ultra-trace |
| Gold | Au | <0.0004 | Ultra-trace |
| Indium | In | <0.0044 | Ultra-trace |
| Thallium | Tl | <0.0004 | Ultra-trace |
| Lead | Pb | <0.00004 | Very low; see safety note |
| Mercury | Hg | <0.000001 | Not detected in some tests |
| Arsenic | As | <0.0001 | Not detected in some tests |
| Selenium | Se | <0.0002 | Ultra-trace |
| Technetium | Tc | <0.0009 | Interpret cautiously |
| Thorium | Th | <0.0007 | Ultra-trace |
| Uranium | U | <0.00009 | Ultra-trace |
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