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Introduction to the common salt: NACL

Introduction to the common salt: NACL. By: Ecem Dilmaç 10/B. Introduction.

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Introduction to the common salt: NACL

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  1. Introduction to the common salt: NACL By: Ecem Dilmaç 10/B

  2. Introduction • Common salt is a mineral substance composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of ionic salts; salt in its natural form as a crystalline mineral is known as rock salt. Salt is present in vast quantities in the sea where it is the main mineral constituent. Salt is essential for animal life, and saltiness is one of the basic human tastes.

  3. PHYSICAL DATA • Melting point: 801oC
Boiling point: 1439oC
(decomposes)Water solubility: 3570 g/l water

  4. Properties • Sodium chloride is readily soluble in water and insoluble or only slightly soluble in most other liquids. • It forms small, transparent, colorless to white cubic crystals. • Sodium chloride is odorless but has a characteristic taste. • It is an ionic compound, being made up of equal numbers of positively charged sodium and negatively charged chloride ions. • When it is melted or dissolved in water the ions can move about freely, so that dissolved or molten sodium chloride is a conductor of electricity; it can be decomposed into sodium and chlorine by passing an electrical current through it.

  5. DaILY LIFE USES • used directly for snow and ice control • as a food preservative and flavoring agent • as a reagent for water softening • as a mineral in animal diets

  6. INDUSTRIAL USES • In metal cleaners • To bleachpaper • Used to manufacture glass, soaps, paper, and water softeners.

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