sodium

Calcium and sodium lactate.

These widely advertised products, which are used primarily for washing clothes, are based on high-sudsing, synthetic organic actives ( sodium alkylbenzenesulfonates ) and contain up to 50% by weight of sodium tripolyphosphate or a mixture of sodium tripolyphosphate and tetrasodium pyrophosphate.

Following reaction the cells were scratched with a file and opened under a 20% aqueous sodium iodide solution.

Carrier Af was added and the aqueous and organic phases were separated ( cells containing gaseous reactants were immersed in liquid air before opening under sodium iodide ).

It was possible to maintain aerobic conditions in the pond by regular additions of sodium nitrate until the temperature decreased and the algae population changed from blue-green to green algae.

The anaerobic conditions in the existing oxidation pond necessitated examination of other methods for supplying additional oxygen than by sodium nitrate.

Shortly after this study ended septic conditions resulted which required the addition of sodium nitrate.

Softener -- e.g. sodium metaphosphate or sodium hexametaphosphate ( if needed in hard water areas ).

Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate.

The alkali metals are lithium ( Li ), sodium ( Na ), potassium ( K ), rubidium ( Rb ), caesium ( Cs ), and francium ( Fr ).

A common application of the compounds of sodium is the sodium-vapour lamp, which emits very efficient light.

Table salt, or sodium chloride, has been used since antiquity.

(" Natrium " is sodium.

Some may suggest that it is probably advisable to use mouthwash at least an hour after brushing with toothpaste when the toothpaste contains sodium lauryl sulfate, since the anionic compounds in the SLS toothpaste can deactivate cationic agents present in the mouthrinse.

However, many would disagree with this hypothesis ; in fact, many of the popular mouthwashes contain sodium lauryl sulfate as an ingredient ( e. g., Listerine Total Care ).

Ingredients also include water, sweeteners such as sorbitol, sucralose, sodium saccharin, and xylitol ( which doubles as a bacterial inhibitor ).

Commercial mouthwashes usually contain a preservative such as sodium benzoate to preserve freshness once the container has been opened.

Improper irrigation of farm land can wick the sodium, calcium, and magnesium from the soil and water to the surface.

The density of voltage-gated sodium channels is much higher here than is found in the adjacent cell body, excepting the axon hillock.

These nodes are areas where the action potential is amplified using a high density of sodium ( Na < big >+</ big >) ions and is subsequently passed along the axon.

The compound resorcinol, hydrogenated with Raney nickel in presence of aqueous sodium hydroxide forms an enolate which is alkylated with methyl iodide to 2-methyl-1, 3-cyclohexandione:

A record cold temperature of 450 ± 80 pK in a Bose – Einstein condensate ( BEC ) of sodium atoms was achieved in 2003 by researchers at MIT.