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| CAS No.: | 10043-67-1 |
|---|---|
| Name: | Potassium aluminum sulfate |
| Molecular Structure: | |
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| Formula: | Al.2H2O4S.K |
| Molecular Weight: | 258.21 |
| Synonyms: | Aluminumpotassium sulfate (AlK(SO4)2) (6CI);Alum;Alum potassium;Aluminium potassiumbis(sulfate);Aluminum potassium alum;Aluminum potassium disulfate;Aluminumpotassium sulfate;Aluminum potassium sulfate (KAl(SO4)2);Aluminum potassiumsulfate alum;Burnt alum;Burnt potassium alum;Conheal;Dialuminum dipotassiumsulfate;Exsiccated alum;Inheal;Potash alum;Potassium alum;Potassiumaluminum alum;Potassium aluminum sulfate (1:1:2);Tai-Ace K 150;Tai-Ace K 20; |
| EINECS: | 233-141-3 |
| Density: | 1.725 g/cm3 |
| Melting Point: | 770oC (with decomposition) |
| Boiling Point: | 330 °C at 760 mmHg |
| Flash Point: | N/A |
| Solubility: | g/100g H2O: 3.00 (0°C), 5.90 (20°C), 109 (90°C) [LAN05] |
| Appearance: | White Microgranular |
| Hazard Symbols: | N/A |
| Risk Codes: | N/A |
| Safety: | |
| Transport Information: | N/A |
| PSA: | 177.28000 |
| LogP: | -0.17690 |
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Reported in EPA TSCA Inventory.
The Potassium aluminum sulfate is an inorganics with the formula Al.2H2O4S.K. The IUPAC name of this chemical is aluminum potassium disulfate. With the CAS registry number 10043-67-1, it is also named as Alum, potassium. It is colorless block crystal or crystalline powder which is easily soluble in water and the aqueous solution is acidic. What's more, it can hydrolysis in water to obtain aluminum hydroxide gel precipitation. It also can slowly dissolve in glycerin and insoluble in ethanol. In addition, this chemical is commonly found in its dodecahydrate form as KAl(SO4)2·12(H2O). When heated to decomposition it emits toxic vapors of SOx.
The other characteristics of this product can be summarized as: (1)ACD/LogP: -1.03; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -5.53; (4)ACD/LogD (pH 7.4): -5.53; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)#H bond acceptors: 4; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 0; (10)Polar Surface Area: 82.98 Å2; (11)Enthalpy of Vaporization: 62.94 kJ/mol; (12)Vapour Pressure: 3.35E-05 mmHg at 25°C; (13)Exact Mass: 257.848704; (14)MonoIsotopic Mass: 257.848704; (15)Topological Polar Surface Area: 177; (16)Heavy Atom Count: 12; (17)Formal Charge: 0; (18)Complexity: 62.2.
Preparation of Potassium aluminum sulfate: Adding industrial aluminum potassium sulfate in water to dissolved. After purification, filtration, evaporation, crystallization, separation, drying and screening to get the product.
Uses of Potassium aluminum sulfate: It is used as purifying agent, fruits and vegetables crispping agent and leavening agent. China allows that it is used in fried food, chips, soy products, baking powder, saltine crackers, puffed food and aquatic products. What's more, it 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.
People can use the following data to convert to the molecule structure.
1. SMILES:[Al+3].[K+].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O
2. InChI:InChI=1/Al.K.2H2O4S/c;;2*1-5(2,3)4/h;;2*(H2,1,2,3,4)/q+3;+1;;/p-4
3. InChIKey:GRLPQNLYRHEGIJ-XBHQNQODAE
