In HPLC analysis, water is essential for use in preparing mobile phases and samples. If impurities are present in a mobile phase, however, they can increase background signals that can increase baseline noise, drift, or cause other phenomena, such as negative peaks or unknown peaks during gradient elution.

Sodium tartrate dihydrate is the volumetric standard for Karl Fischer titration. Under normal conditions, it is stable and non-hygroscopic. Sodium tartrate dihydrate has a stoichiometric water content of 15.66% and is primarily used for titer determination in volumetry.

Vinylidene Chloride its chemical name is 1,1-dichloroethylene, a colourless, dense, toxic, volatile, flammable liquid belonging to the family of organic halogen compounds.

Vinylidene Chloride (VDC)

Some common applications of sodium carbonate (or washing soda) include: Sodium carbonate (or washing soda) is used as a cleansing agent for domestic purposes like washing clothes. Sodium carbonate is a component of many dry soap powders. It is used for removing temporary and permanent hardness of water.

As we know, anhydrous sodium carbonate has no water molecules. It's just Na2CO3. - When the hydrated sodium carbonate is strongly heated, it decomposes into water and anhydrous sodium carbonate.

Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the formula NaBH₄. This white solid, usually encountered as a powder, is a reducing agent that finds application in chemistry, both in the laboratory and on an industrial scale.

Sodium citrate is used as anticoagulant to prevent blood from clotting. Dispense 0.5 ml of sodium citrate into test tube. Add 4.5 ml blood and mix gently by inversion of the stoppered tube. Sodium citrate is effective as an anticoagulant due to its mild calcium-chelating properties.

Here follows the procedure to prepare your anticoagulant solution: Dissolve 3.80g Sodium citrate in 100.0ml Distilled water. (Stir until solids are no longer observed.)

Sodium carbonate (or washing soda) is used as a cleansing agent for domestic purposes like washing clothes. Sodium carbonate is a component of many dry soap powders. It is used for removing temporary and permanent hardness of water.

As we know, anhydrous sodium carbonate has no water molecules. It's just Na2CO3. - When the hydrated sodium carbonate is strongly heated, it decomposes into water and anhydrous sodium carbonate.

Sodium Bromide is not technically an algaecide, but is used with granular chlorine  as a catalyst to convert the bromides into the potent algae killer, hypobromous acid.  Bromides are usually used not for algae control, but to kill pool algae in out-of-control cases.

Sodium is a positively charged radical, which is very unstable because it is a highly reactive metal. Even to protect it for its reactivity, it is kept inside kerosene oil.

This reagent solution is often used to test the hardness of water. It is generally employed in textile industries for this purpose.

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Sodum bisulphite appears as white crystals or crystalline powder. Slight sulphurous odor. Specific gravity 1.48. 

Chemically, sodium bisulfite is a combination of sodium, hydrogen, sulfur and oxygen.

It is also called sodium hydrogen sulfite, and is classed as a sulfite, or sulfur-based chemical.

Its natural form is a white crystalline powder, but turns yellow in solution.