To prepare and submit magnesium carbonate (MgCO3) .

 OBJECT: To prepare and submit magnesium carbonate (MgCO3) .

REFERENCE 

1. Singh H.R., Kapoor V.K. “Practical Pharmaceutical chemistry”, Vallabh Prakashan, Ed I st, 2008, pp 23-24.

 2. Chatwal G.R, “Pharmaceutical chemistry inorganic” Himalaya publishing house, Ed 5 th, 2010, pp 164-165.

REQUIRMENTS

 Chemical required:  Magnesium sulphate(MgSO4), Sodium carbonate (Na2CO3) 

Apparatus required: - Beaker, glass rod, measuring cylinder, funnel. 

THEORY 

Synonyms: Epsom salt Chemical formula: MgCO3 

Molecular weight: 84.31

 Magnesium carbonate is hydrated basic magnesium carbonate containing the equivalent of 40-50% of magnesium oxide. It occurs in two form, light and heavy magnesium carbonate. Dosage form is in form of oral suspension, tablets (200mg). Heavy Magnesium carbonate is different from light magnesium carbonate in density. 15g of heavy magnesium carbonate occupies a volume of 30 mL while light Magnesium carbonate occupies a volume of 125 mL. It is obtained by the double decomposition from magnesium sulphate and sodium carbonate. 

MgSO4 + Na2CO3 → MgCO3 + Na2SO4

PROCEDURE

 Take 2.5g of Magnesium sulphate and 2.1g of sodium carbonate and dissolved separately in distilled water in 100mL beaker. When both are completely dissolved, the solution are mixed and concentrated. The residue is digested with boiling water for 30 minutes with water and the insoluble magnesium carbonate is filtered on calico cloth, washed until it becomes free from sulphate ions and dried in an oven.



PROPERTIES 

  • It is a white granular powder

  • It is odourless and tasteless

  • It is insoluble in water and alcohol

  • It is soluble in dilute acids with effervescence. 

 USES 

  • Magnesium carbonate used as an antacid and a laxative.
  • It is used as source of magnesium
  • It is used as anti-caking agent in cooking salt.
  • It is used as carbonate sources in soft drink. In dentistry, 
  • magnesium carbonate is used as gypsum impression from which dental plates are made 
RESULT Magnesium carbonate was prepared and submitted.

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