| MAGNESIUM
HYDROXIDE
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PRODUCT IDENTIFICATION |
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| CAS NO. | 1309-42-8 |
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| EINECS NO. | 215-170-3 | |
| FORMULA | Mg(OH)2 | |
| MOL WT. | 58.33 | |
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H.S. CODE |
2816.10 | |
| TOXICITY | Oral rat LD50: 8500 mg/kg | |
| SYNONYMS | Milk of Magnesia; Mint-O-Mag; Magnesia Magma; | |
| Magnesium Hydrate; | ||
| SMILES | ||
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | white powder, Odorless | |
| MELTING POINT | 350 C ( Decomposes) | |
| BOILING POINT | ||
| SPECIFIC GRAVITY | ||
| SOLUBILITY | Practically insoluble | |
| pH | 9.5-10.5 (aqueous slurry) | |
| VAPOR DENSITY | ||
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AUTOIGNITION |
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NFPA RATINGS |
Health: 1 Flammability: 0 Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT |
will not burn |
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| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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| Magnesium Hydroxide is a white powder; specific gravity 2.36; , very slightly soluble in water; decomposing at 350 C. It occurs naturally as the mineral called brucite or is prepared by reacting magnesium sulphate or chloride with sodium hydroxide. It is used in the refining of sugar, in extraction of magnesium metal, in the processing of uranium, and in the sulfite wood pulp process. It is an inert filler, flame retardant and smoke suppressant for plastics, synthetic rubber, reinforced polyesters, phenolics, and urethane foam. Magnesium hydroxide releases its 31% water when heated to above 325 C, which cools the product below flash point to reduce fire occurance. Medicinally it, in the form of a mixture (milk of magnesia), is also used as an antacid and as a osmotic laxative. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
white powder | |
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ASSAY |
96.0% min (dry) |
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LOSS ON IGNITION |
30.5% max |
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SOLUBLE SALTS |
0.5% max |
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CALCIUM OXIDE |
1.5% max |
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MOISTURE |
1.0% max |
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| PARTICLE SIZE |
99.7% min (325 mesh) |
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| TRANSPORTATION | ||
| PACKING | 50kgs in Bag | |
| HAZARD CLASS | not regulated | |
| UN NO. | ||
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Class of Flame Retardants
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