Sodium Chloride

Grades

IP

BP/EP

USP

Description

Colorless crystal or white, crystalline powder

White or almost white, crystalline powder or colorless crystals or white or almost white pearls

Colorless, cubic crystals or white crystalline powder

Identification

It gives the reactions of chloride and gives the reactions of sodium salts

It gives the reactions of chlorides and gives the reactions of sodium

It gives the reactions of chlorides and gives the reactions of sodium

Solubility

Freely soluble in water, slightly more soluble in boiling water ; insoluble in ethanol

Freely soluble in water,  insoluble in  anhydrous ethanol

Freely  soluble in water, slightly more soluble in boiling water ; soluble in glycerin ; slightly soluble in alcohol

Alkalinity/Acidity

NMT 0.5 ml of 0.01 M NaOH or 0.01 M HCl

NMT 0.5 ml of 0.01M HCl or 0.01 M NaOH

NMT 0.5 ml of 0.01 N HCl or 0.01 N NaOH

Arsenic

1 ppm

Max 1 ppm

Max 1 ppm

Magnesium and alkaline earth metals

Max 50 ppm

Max 100 ppm

Max 100 ppm

Barium

No turbidity produced within 2 h

Any opalescence in the test solution is not more intense than that in the reference solution.

Any opalescence in the test solution is not more intense than that in the reference solution.

Iron

20 ppm

Max 2 ppm

Max 2 ppm             

Aluminium

Max 0.2 ppm

Max 0.2 ppm

Max 0.2 ppm

Heavy Metals

Max 5 ppm

Max 5 ppm (EP)

-

Iodide

No blue color

No blue color

No blue color

Clarity of Solution

Clear and colorless

Clear and colorless

Clear and colorless

Potassium

Max 0.1%

Max 500 ppm

Max 500 ppm

Nitrites

-

Max 0.01

Max 0.01

Phosphates

-

Max 25 ppm

Max 25 ppm

Bromide

0.1%

Max 100 ppm

Max 100 ppm

Ferrocyanide

No blue color is produced in 10 min

No blue color is develops in 10 min

No blue color is develops in 10 min

Bacterial endotoxins

-

Less than 5 IU/g

-

Sulfates

300 ppm

Max 200 ppm

Max 200 ppm

Loss on drying

Max 1.0%

Max 0.5%

Max 0.5%

Assay Dry Basis

99.0% to 100.5%

99.0% to 100.5%

99.0% to 100.5%