NON FERRIC ALUM -40 KG PACKET

Description

Non Ferric Alum is a purer form of aluminum sulphate. It is used in better grades of paper for loading and sizing purposes. Non Ferric Alum is manufactured from aluminium trihydrate whereas ferric alum uses bauxite as the raw material. The raw material is cooked with sulphuric acid under suitable conditions. The resultant product is cooled in suitable moulds to slabs. It is available in solid forms.
Product Specification
1. Insoluble matter % by mass, Max 0.30
2. pH (of 5% Solution), min 2.8
3. Heavy metals (as pb), parts per million, max –
4. Iron (as Fe), percent by mass, max 0.01
5. Chlorides –
6. Arsenic (as As2O3) parts per million –
7. Ammonium Salts (as NH3), percent by mass, max –
8. Aluminium (as Al2O3), percent by mass 17 min
9. Sodium (as Na) percent by mass, max –
10. Potassium (as K) percent by mass, max –

Uses
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.
It is the most versatile and easily used material for sizing paper with rosin.