Non ferric alum imparts better brightness to paper when used with rosin for sizing. It forms a complex resinate that spreads evenly over the surface of paper.
It finds other uses in pharmaceutical and mordanting industry. In water purification the highly positively charged aluminum precipitates negative suspensions as sludge.
The raw material is cooked with sulphuric acid under suitable conditions. The resultant product is cooled in suitable moulds to slabs. It is available both, in solid and in liquid forms. At Orient Packagings Ltd. we have both products.
OPL Non Ferric Alum - Benefits
It is the most versatile and easily used material for sizing paper with rosin.