Sodium Sulfate
Na2SO4 FAQ
1.What is the properties of anhydrous sodium sulfate?
Sodium sulfate is in ...
2.What is the facts of sodium sulphate anhydrous?
Sodium sulphate is found ...
3.What is anhydrous sodium sulfate’s usage?
Sodium sulphate is mainly used in laundry detergents...
Sodium Sulfate BP
Name: Anhydrous Sodium Sulfate BP
Action and Use: Laxative.
Content: 98.5 per cent to 101.0 per cent (dried substance).
Characters
Appearance: White or almost white powder, hygroscopic.
Solubility: Soluble in water.
Identification
A. It gives the reactions of sulphates.
B. It gives the reactions of sodium.
C. It complies with the test for loss on drying (see Tests).
Appearance of Solution: Solution S is clear and colourless.
Acidity or Alkalinity:
To 10 ml of solution S add 0.1 ml of bromothymol blue solution R1 . Not more than 0.5 ml of 0.01M hydrochloric acid or 0.01M sodium hydroxide is required to change the colour of the indicator.
Chlorides: Maximum 450 ppm.
Calcium : Maximum 450 ppm, if intended for use in the manufacture of parenteral dosage forms.
Iron:Maximum 90 ppm, if intended for use in the manufacture of parenteral dosage forms.
Magnesium:Maximum 200 ppm, if intended for use in the manufacture of parenteral dosage forms. To 10 ml of solution S add 1 ml of glycerol (85 per cent), 0.15 ml of titan yellow solution, 0.25 ml of ammonium oxalate solution and 5 ml of dilute sodium hydroxide solution and shake. Any pink colour in the test solution is not more intense than that in a standard prepared at the same time in the same manner using a mixture of 5 ml of magnesium standard solution (10 ppm Mg) and 5 ml of water .
Heavy Metals:Maximum 45 ppm.
Loss On Drying