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Potash Alum, also known as potassium aluminum sulfate, is a chemical compound with the formula (KAl(SO4)2.12H2O). It's a type of alum that's commonly used in medicine, water purification, and other applications.
Potassium alum, also called potash alum or potassium aluminium sulphate, is the dodecahydrate KAl(SO4)2·12H2O. The same compound is often written K2SO4·Al2(SO4)3·24H2O, which is simply the formula doubled. In South Asian markets it is sold as fitkari or phitkari.
Where it is used: clarifying water, leather tanning, as a mordant that fixes dye on wool and other fibres, fire-retardant treatment of textiles, baking powder (food additive E522), and in deodorant and aftershave blocks. Other coagulants for water treatment are aluminium sulphate and poly aluminium chloride; see our water treatment page. A laboratory (LR) grade is listed separately.
| Formula | KAl(SO4)2·12H2O (also written K2SO4·Al2(SO4)3·24H2O) |
|---|---|
| Molar mass | 474.4 g/mol (dodecahydrate); 258.21 g/mol (anhydrous) |
| CAS number | 7784-24-9 (dodecahydrate); 10043-67-1 (anhydrous) |
| Food additive number | E522 |
| Other names | Potash alum, alum, fitkari, phitkari, aluminium potassium sulphate |
Fitkari is potash alum, KAl(SO4)2·12H2O. Older books write it K2SO4·Al2(SO4)3·24H2O.
Yes. Both names mean potassium aluminium sulphate dodecahydrate.
No. In water treatment "alum" often refers to aluminium sulphate, which contains no potassium. Check the formula on the data sheet before you order.
Potassium alum is commonly used in water purification, Leather Tanning, Dyeing, Fireproof Textiles, and Baking Powder.
Potash alum is a chemical compound widely used as the potassium sulfate dodecahydrate. It is double salt that is used commonly in medicine and the water treatment process. Potash alum is also known as potassium alum or potassium aluminium sulfate. The chemical formula of potash alum is K2SO4.Al2(SO4)3.24H2O. It is also commonly referred to as ‘fitkari.’
Potassium Aluminum Sulfate, Fitkari
Agricultural Application : Potash Alum also used to balance pHof SOIL. When Soil is ALKALINE, then use approx 1 Kg Fitkari Diluted solution per Acre basis. NEVER use Fitkari for ACIDIC SOIL and Neutral pH soil. Fitkari, also known as alum, is used in agriculture to improve soil fertility, plant health, and crop production. It can also be used as a pesticide to kill insects and treat fungal and bacterial infections.
Soil fertility
Fitkari can improve soil structure, pH, and nutrient availability.
Plant health
Fitkari can help plants absorb nutrients, strengthen cell structure, and promote robust growth.
Pesticides
Fitkari can be be used as a pesticide to kill insects like aphids, cabbageworms, and cutworms.
Fungal and bacterial infections
Fitkari's antiseptic properties can help protect plants from fungal and bacterial infections
Oman. Stocked at our warehouse in Barka, South Al Batinah, and supplied to Muscat, Ruwi, Mutrah, Seeb, Rusayl, Barka, Sohar, Shinas, Saham, Buraimi, Nizwa, Ibri, Sur, Salalah, Duqm, Khasab and every other governorate.
Ports and free zones. Port Sultan Qaboos (Mutrah), Mina Al Fahal, Sohar Port and Freezone, Port of Salalah and Salalah Free Zone, Port of Duqm and the Duqm Special Economic Zone, Port of Sur, Khasab Port and Al Mazunah Free Zone.
Industrial areas. Rusayl, Sohar, Barka (Sanaya), Raysut (Salalah), Nizwa, Sur, Buraimi and Duqm industrial estates, Knowledge Oasis Muscat, and oil and gas sites across Oman.
Beyond Oman. We have branches in the UAE (including Fujairah) and in India (Kandla, Kolkata, Visakhapatnam, Chennai and Mumbai), and we also supply to South Africa.