Frequent H2O accompanier

• It's present in the sea's H2O
• Salt, to a chemist
• Chemist's salt
• What a chemist brings to the table?
• Salt's symbol
• Sodium chloride, chemically
• Salty letters
• Seawater component, to a chemist
• Salt, symbolically

Wiktionary Word definitions in Wiktionary
n. sodium chloride#English; table salt.