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Mubychem Group, established in 1976, is the pioneer manufacturer of Zinc Chloride, Ammonium Chloride, Calcium Chloride, Potassium Chloride, Sodium Acetate, Sodium Thiosulphate, Magnesium Hydroxide, Pharmaceutical, Fragrance & Flavor chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India. |
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Magnesium Hydroxide BP Magnesium Hydroxide USP Magnesium Hydroxide Manufacturers
also FCC IP
CAS No.: 1309-42-8, Molecular Weight: 58.32, Chemical Formula: Mg(OH)2
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Magnesium Hydroxide
Technical & Pure
Also IP BP Ph. Eur. USP ACS AR LR FCC Food Grades
Magnesium Hydroxide BP
DEFINITIONContent
95.0 per cent to 100.5 per cent of Mg(OH)2.
CHARACTERS
Appearance
White, fine, amorphous powder.
Solubility
Practically insoluble in water. It
dissolves in dilute acids.
A. Dissolve about 15 mg in 2 ml of dilute nitric acid and neutralize with dilute sodium hydroxide solution. The solution gives the reaction of magnesium.
B. It complies with the test for loss on ignition (see Tests).
TESTS
Solution S
Dissolve 5.0 g in a mixture of 50 ml of acetic acid and 50 ml
of distilled water. Not more than slight effervescence is
produced. Boil for 2 min, cool and dilute to 100 ml with dilute
acetic acid. Filter, if necessary, through a previously ignited and
tarred porcelain or silica filter crucible of
suitable porosity to give a clear filtrate.
Appearance of solution
Solution S is not more intensely coloured
than reference solution.
Soluble substances
Maximum 2.0 per cent.
Substances insoluble in acetic acid
Maximum 0.1 per cent.
Chlorides
Maximum 0.1 per cent.
Sulphates
Maximum 0.5 per cent.
0.6 ml of solution S diluted to 15 ml with distilled water complies with the limit test for
sulphates.
Arsenic
Maximum 4 ppm.
Calcium
Maximum 1.5 per cent.
Iron
Maximum 0.07 per cent.
Heavy metals
Maximum 30
ppm.
Loss on ignition
29.0 per cent to 32.5 per cent. Heat 0.5 g gradually to 900 °C and
ignite to constant mass.
Magnesium Hydroxide USP
Magnesium HydroxideMg(OH)2 58.32
Magnesium hydroxide.
Magnesium hydroxide [1309-42-8].
Magnesium Hydroxide, dried at 105 for 2 hours, contains not less than 95.0 percent and not more than 100.5 percent of Mg(OH)2.
Identification—
A 1 in 20 solution
in 3 N hydrochloric acid responds to the
tests for Magnesium.
Microbial limits— It meets the requirements of the test for
absence of Escherichia coli.
Loss on drying— Dry it at 105 for 2 hours: it loses not more than
2.0% of its weight.
Loss on ignition—
Ignite it at 800 ,
increasing the heat gradually, to constant weight: it loses between
30.0% and 33.0% of its weight.
Soluble salts— Boil 2.0 g with 100 mL
of water for 5 minutes in a covered beaker, filter while hot, cool, and
dilute the filtrate with water to 100 mL.
Titrate 50 mL of the diluted filtrate
with 0.10 N sulfuric acid, using methyl red
TS as the indicator: not more than 2.0 mL of
the acid is consumed.
Evaporate 25 mL of the diluted filtrate to
dryness, and dry at 105 for 3 hours: not more than 10 mg of residue
remains.
Carbonate—
Boil a mixture of 0.10 g with 5 mL of water, cool, and add 5
mL of 6
N acetic acid: not more than a slight effervescence is observed.
Limit of calcium— the
limit is 1.5%.
Heavy metals—the limit is 20 <g per g.
Lead— limit is 0.001%.
Magnesium Hydroxide FCC
Mg(OH)2 Formula wt 58.32INS: 528 CAS: [1309-42-8]
DESCRIPTION
Magnesium Hydroxide occurs as a white, bulky powder. It is soluble
in dilute acids but practically insoluble in water and in alcohol.
Function: pH control; drying agent; color-retention agent.
REQUIREMENTS
Identification: A 1:20 aqueous solution in 2.7 N
hydrochloric acid gives positive tests for.
Assay: Not less than 95.0% and not more than 100.5% of
Mg(OH)2 after drying.
Alkalies (Free) and Soluble Salts: Passes test.
Calcium Oxide: Not more than 1%.
Lead: Not more than 2 mg/kg.
Loss on Drying: Not more than 2.0%.
Loss on Ignition: Between 30.0% and 33.0%.
Magnesium hydroxide BP
Magnesium Hydroxide USP
Magnesium Hydroxide
Manufacturers:
MUBY CHEMICALS
S-8, SARIFA MANSION, 2ND FLANK ROAD, CHINCHBUNDER, MUMBAI 400009, INDIATEL: (OFFICE) 91-22-23770100, 23726950, 23774610, 23723564. FAX: 91-22-23728264
e-mail: info@mubychem.com
Cell Call
to Anmol: +91-9821870100
USA & Canadian Customers may Call
773-829-5811
Copyright and Usual Disclaimer is
Applicable.
Last updated
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