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Magnesium Oxide DC USP

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Product Description

PRODUCT

Magnesium Oxide DC USP

CAS #

1309-48-4

SYNONYM

Magnesia; Periclase; Magnesium oxide (MgO); Magnesium oxide (CI 77711)

FORMULA

MgO

Typical Product Specifications

PARTICLE SIZE - 60 MESH

No less than 90% retain (seive analysis)

ARSENIC

No more than 1 ppm

DESCRIPTION

Heavy, white, odorless granules

SOLUBILITY

Practically insoluble in water, dissolves in dilute acids with at most slight effervesence

LOSS ON IGNITION

Not more than 10 % (w/w)

FREE ALKALI & SOLUBLE SALTS

No more than 2%

ACID INSOLUBLE SUBSTANCES

No more than 0.1%

HEAVY METALS

No more than 20 ppm

CALCIUM

No more than 1.1% [w/w]

ASSAY

No less than 96.0 % & No more than 100.5% of MgO [Ignited Substance]

MICROBIAL TEST - TFC

No more than 100 CFU/g

PATHOGENS

Absent

PARTICLE SIZE - 30 MESH

100% pass (seive analysis)

BULK DENSITY

15 grams occupies a volume of 15 ml

IDENTIFICATION

By reaction of Magnesium

MICROBIAL TEST - TBC

No more than 1000 CFU/g

IRON

No more than 500 ppm

INSOLUBILITY

in alcohol

ODOR

wh. powd. or cryst., odorless

MELTING POINT

2800 c

MOLECULAR WEIGHT

40.31

BOILING POINT

3600 c

DENSITY

3.65-3.75

VERY SOLUBLE

in water

NOTES

Use: ABSORBENT, BUFFERING, OPACIFYING

FUNCTIONS

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