Magnesium Hydroxide

Grades

IP

BP

USP

Appearance of solution

Clear

Clear

Clear

Identification

Positive to tests of Magnesium & Hydroxide

Positive to tests of Magnesium & Hydroxide

Positive to tests of Magnesium & Hydroxide

Description

A White amorphous powder

A White amorphous powder

A White amorphous powder

Solubility

in-soluble in water, Soluble in Dilute Acids

in-soluble in water, Soluble in Dilute Acids

in-soluble in water, Soluble in Dilute Acids

Arsenic

Max 4 ppm

Max 4 ppm

-

Iron

Max 0.08 %

Max 0.07 %

-

Heavy Metals

Max 30 ppm

Max 30 ppm

Max. 20 g/gm

Chloride

0.1% Max.

0.1 % Max.

0.1 % Max.

Calcium

-

1.5 % Max.

1.5 % Max.

Lead

-

-

Max. 0.001 %

Soluble Substance

1 % Max.

2.0 % Max.

10.0 mg Max.

Carbonates

-

No effervescence

Substance In-soluble in Acetic Acid

0.1% Max.

0.1% Max.

-

Sulphate

0.5% Max.

0.5% Max.

-

Loss on Ignition

30.0 % to 32.5 % @ 900^oC

29.0 % to 32.0 % @ 900^oC

30.0 % to 33.0 % @ 800^oC

Loss on Drying

-

-

Max. 2.0 % @ 105oC for 2 hrs

Assay

95.0 % to 100.5 %

95.0 % to 100.5 %

95.0 % to 100.5 %