Aluminium Sulphate

General Info

It is off white/ greenish hygroscopic granules or pieces. Capable to cake after moisture absorption, when laid in air for a long time. A little green because of Fe2+, yellow when Fe2+ is oxidized to Fe3+. Soluble in water easily, and aqueous solution is acidic.
Shelf Life: Long life is expected in airtight bags.

Chemical Identification

Chemical Formula : Al₂(SO₄)₃

Molecular Weight : 342.20

CAS No. : 10043-01-3

Specification

Parameters Average Chemical Analysis

Physical appearance : Off white/ greenish hygroscopic granules or pieces.

Alumina (Al₂O₃) : 13-15 %

Aluminium (Al) : 7.0-8.0%

Iron (Fe) : 0.5 % max.

Water insoluble : 0.2 % max.

pH (1% W/V solution) : 2.5 – 3.5

Application

Aluminium sulphate has major uses as following:
Treatment of industrial water, paper making, printing and dye, tanning leather, fire retardants; decolorizing agent in petroleum, deodorizer; firming agent; dyeing mordant; foaming agent in firefighting foams; fireproofing cloth; catalyst; pH control; waterproofing concrete; aluminum compounds, zeolites etc.

Packing & Storage

It is supplied in the packing of 50 kg Polypropylene bags, having polyethylene liner in bags.

The product is liable to absorb moisture and clot due to long term exposure, so shady, cool and ventilated environment is needed. It should be kept away from rain or damp. Protect against physical damage.

Handling & Safety Instruction

Avoid contact with eyes, skin, and breathing dust.
Harmful if swallowed, causes irritation to skin, eyes, and respiratory tract.
It should be kept away from rain or damp.
Protect against physical damage.
May cause allergic skin or respiratory reaction. Remove the victim to fresh air; if breathing is difficult.
Use safety goggles and rubber gloves.