Seven industrial water magnesium sulfate

Molecular formula: MgSO4 · 7 h2o

Molecular weight: 246.48 international relative atomic weight (1991)

Sex to pledge: white fine acicular or inclined columnar crystal. Odorless, bitter taste, easy weathering in dry air. The proportion of 1.68. Soluble in water, slightly soluble in alcohol and glycerin. The crystallization of the water in the 67.5 ℃ dissolve in itself. Thermal decomposition, 70-80 ℃ when lose four molecules of crystal water. About 200 ℃ lost all crystallization water into water.

Use: mainly used in fertilizer, tanning, printing and dyeing, catalyst, paper making, plastic, porcelain, pigment, match, explosives and fire prevention materials manufacturing. Can be used for dyeing and printing of thin cotton cloth, silk, cotton silk as fillers and kapok products packing; Medicine, used as Epsom salt.

Pack pack: 25 kg, 40 kg, 50 kg plastic woven bags with inner plastic bags.

Storage: store in a cool, dry place, prevent weathered, moisture proof.

Technical indicators:

The index name

Grade a

seconds

The main content (MgSO4 · 7 h2o) %

99.5 or higher

95.0 or higher

Iron (Fe) %

0.005 or less

0.01 or less

Chloride (as Cl) %

0.30 or less

0.50 or less

Water insolubles %

0.10 or less

0.15 or less

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