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Magnesium Stearate

Test Specification...BP
Characters It occurs as a white, very fine, light powder, greasy to touch
Identification

Test A

Test B

Test C

Test D

(a)Freezing point: Minimum 530C

(b)Acid Value: 195 to 210

(c)Specified test

(d) Specified Test. A white crystalline precipitate is formed

Solubility Practically insoluble in water and in anhydrous ethanol
Acidity or alkalinity Specified test
Chlorides Not more than 0.1%
Sulfates Not more than 1.0%
Cadmium Not more than 3 ppm
Lead Not more than 10 ppm
Nickel Not more than 5ppm
Loss on drying Not more than 6.0%
Assay:

(a) Stearic Acid in Fatty acid fraction

(b)Magnesium

(c)Stearic acid + palmitic acid

(a)Not less than 40.0%

(b)Not less than 4.0% and not more than 5.0% (dried substances)

(c)Not less than 90%

Test Specification...IP
Appearance A very fine, light, white powder; odorless or with a very faint odor of stearic acid; unctuous and free from grittiness.
Solubility Practically insoluble in water and in ethanol
Appearance of the solution The solution is not more colored than the reference solution
Appearance of solution of fatty acids The solution is clear and not more intensely colored than the reference solution.
Acidity or alkalinity Passes test
Acid value of fatty acids 195 to 210
Free stearic acid Not more than 3%
Zinc stearate Passes test
Heavy metals Maximum 20ppm
Chlorides Maximum 250ppm
Sulphates Maximum 0.6%
Loss on drying Maximum 6%
Assay Not less than 3.8% and not more than 5% of Mg
Test Specification...USP
Characters It occurs as a very fine, light, white powder, slippery to touch
Identification

Test(A)

Test (B)

(A)The solution responds to the test for magnesium

(B) Specified test

Solubility It is insoluble in water, in alcohol, and in ether.
Acidity or alkalinity Specified Test
Loss on drying Not more than 6.0%
Specific surface area Specified Test
Chloride Not more than 0.1%
Sulfate Not more than 1.0%
Limit of Cadmium Not more than 3 ppm
Limit of Lead Not more than 10 ppm
Limit of Nickel Not more than 5 ppm
Relative content of stearic acid and palmitic acid Specified Test
Residual solvents Meets the requirements
Assay Not less than 4.0% and not more than 5.0% of on dried basis

Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.

Other
GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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