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Assay of Ammonium chloride Pharmaceutical Analysis I Practical


Pharmaceutical Analysis I Practical: Limit test for (1) Chloride (2) Sulphate (3) Iron (4) Arsenic Preparation and standardisation of (1) Sodium hydroxide (2) Sulphuric acid (3) Sodium thiosulfate (4) Potassium permanganate (5) Ceric ammonium sulphate Assay (1) Ammonium chloride (2) Ferrous sulphate(3) Copper sulphate (4) Calcium gluconate (5) Hydrogen peroxide (6) Sodium benzoate (7) Sodium Chloride Determination of Normality (1) Conductometric titration of strong acid against a strong base (2) Conductometric titration of strong acid and weak acid against a strong base (3) Potentiometric titration


Aim

To determine the percent content of Ammonium chloride in the given sample.

Principle

It is estimated by the alkalimetry method. An accurately weighed quantity of the sample is dissolved in water to liberate HCl which is directly titrated with 0.1M NaOH using phenolphthalein solution as an indicator. Neutralized formaldehyde solution is added to fix the ammonia as Hexamine, otherwise, it will interfere with titrant (Alkali).

Standard

Ammonium Chloride contains not less than 99.0 per cent and not more than 100.5 per cent of NH4Cl, calculated on a dried basis.

Procedure

Weigh accurately about 0.1 g, dissolve in 20 ml of water and add a mixture of 5 ml of formaldehyde solution, previously neutralised to dilute phenolphthalein solution, and 20 ml of water.

After 2 minutes, titrate slowly with 0.1 M sodium hydroxide using a further 0.2 ml of dilute phenolphthalein solution as an indicator.


First Year B Pharm Notes, Syllabus, Books, PDF Subjectwise/Topicwise

F Y B Pharm Sem-IS Y B Pharm Sem-II
BP101T Human Anatomy and Physiology I TheoryBP201T Human Anatomy and Physiology II – Theory
BP102T Pharmaceutical Analysis I TheoryBP202T Pharmaceutical Organic Chemistry I Theory
BP103T Pharmaceutics I TheoryBP203T Biochemistry – Theory
BP104T Pharmaceutical Inorganic Chemistry TheoryBP204T Pathophysiology – Theory
BP105T Communication skills TheoryBP205T Computer Applications in Pharmacy Theory
BP106RBT Remedial BiologyBP206T Environmental sciences – Theory
BP106RMT Remedial Mathematics TheoryBP207P Human Anatomy and Physiology II Practical
BP107P Human Anatomy and Physiology PracticalBP208P Pharmaceutical Organic Chemistry I Practical
BP108P Pharmaceutical Analysis I PracticalBP209P Biochemistry Practical
BP109P Pharmaceutics I PracticalBP210P Computer Applications in Pharmacy Practical
BP110P Pharmaceutical Inorganic Chemistry Practical
BP111P Communication skills Practical
BP112RBP Remedial Biology Practical

Suggested readings:

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  • Preparation and standardization of Ceric ammonium sulfate standard solution
  • BP104T Pharmaceutical Inorganic Chemistry Theory Syllabus
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