Atomic methane gas.
If you think to bases as hydroxides some example are: sodium hydroxides, potassium hydroxides, calcium hydroxides, uranium hydroxides etc.
Sodium hydroxide = NaOH Calcium hydroxide = Ca(OH)2
Sodium and potassium hydroxides are used in the preparation of soaps.
Hydrochloric acid Sulfuric acid Phosphoric acid Sodium hydroxide Calcium hydroxide Potassium hydroxide
Not all salts have sodium in them. So a salinity hazard could mean different salts.
For example hydroxides as calcium, sodium or potassium hydroxide.
Soluble hydroxides are hydroxide compounds that can dissolve in water to form a basic solution. Some common examples include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2). These hydroxides dissociate into ions in water, increasing the concentration of hydroxide ions and making the solution basic.
Sodium chloride hasn't a hazard symbol or a risk phrase. See also the link below.
Metallic hydroxides are formed when a metal reacts with water or a base to produce a metal cation and hydroxide anion (OH-). For example, when sodium metal reacts with water, it forms sodium hydroxide and hydrogen gas. The metal hydroxide then dissociates in solution to release hydroxide ions.
Sodium symbol is 'Na'. This comes from the Latin for sodium , which is 'NADIUM'. Similary Potassium , symbol is 'K' . which comes from Latin for potassium , which is 'KALIUM'. Historically the hydroxides of these metals where known as ' Caustic Soda' , and 'Caustic Potash'.
An antacid contains hydroxides of magnesium and aluminium, bicarbonates of calcium and sodium.
Metal hydroxides make alkaline solutions.(e.g sodium hydroxide) Pascal