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Potassium Alum,Potash Alum Big Lump
MF:KAl(SO4)2.12(H2O)
CAS no.:7784-24-9
Purity:99.2%
Potassium Aluminum Sulfate Food grade
High purity Potassium Alum big lump Food Grade 99.2%
Other Name: aluminum potassium sulfate
CAS no.: 7784-24-9
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1. Introduction
Potassium alum, potash alum, tawas, or aluminum potassium sulfate is a chemical compound: the potassium double sulfate of aluminium. Its chemical formula is KAl(SO4)2 and it is commonly found in its dodecahydrate form as KAl(SO4)2·12(H2O). It is commonly used in water purification, leather tanning, dyeing, fireproof textiles, and baking powder. It also has cosmetic uses as a deodorant, as an aftershave treatment and as a styptic for minor bleeding from shaving.
2.Characteristics
Potassium alum crystallizes in regular octahedra with flattened corners, and is very soluble in water. The solution reddens litmus and is an astringent .
3.Specifications
Potash alum Project Content
Aluminum potassium sulfate (dry basis) ≥ 99.2%
Moisture ≤ 1.0%
iron (Fe) ≤ 0.01%
heavy metals (Pb) ≤ 0.002%
arsenic (As) ≤ 0.0002%
water insoluble matter ≤ 0.2%
4. Usages
A.Industrial Grade
(1). Potassium alum is an astringent/styptic and antiseptic. For this reason, it can be used as a natural deodorant by inhibiting the growth of the bacteria responsible for body odor. Use of mineral salts in such a fashion does not prevent perspiration.
(2). It is frequently used topically and internally in traditional systems of medicine including Ayurveda, where it is called phitkari or saurashtri, and Traditional Chinese Medicine .
(3). It is also used as a hardener for photographic emulsions (films and papers), usually as part of the fixer, although modern materials are adequately hardened and this practice has fallen out of favor. It is also used in tanning of leather.
(4). Potassium alum is also can be used in the preparation of aluminum salt, baking powder, paint, tanning, clarifying agent, mordant, papermaking, waterproofing agent.
B. Food Grade
In addition, alum is the traditional food improvers and leavening agents, commonly used for fritters, noodles, rice and other food additives production. However, due to the chemical composition of alum is potassium aluminum sulfate, containing aluminum ions, so excessive intake may affect body iron, calcium absorption components, leading to osteoporosis, anemia, and even affect the development of nerve cells. Therefore, some nutrition experts, to try to eat foods containing alum. Alum is the traditional purifying agent, has been widely used.
5. Package
*Net weight 50kg plastic woven bag with plastic inner bag.
*Customized package is welcome.