Aluminium potassium sulfate dodecahydrate
- CAS No.
- 7784-24-9
- Chemical Name:
- Aluminium potassium sulfate dodecahydrate
- Synonyms
- POTASSIUM ALUM;ALUM;ALUMINUM POTASSIUM SULFATE;ALUMINIUM POTASSIUM SULFATE;ALUMINUM POTASSIUM SULFATE DODECAHYDRATE;POTASSIUM ALUMINUM SULFATE DODECAHYDRATE;Aluminum Potassium Sulfate Hydrate;POTA;kalinite;AlH8KO5S
- CBNumber:
- CB0314947
- Molecular Formula:
- AlH8KO5S
- Molecular Weight:
- 186.2
- MDL Number:
- MFCD00149143
- MOL File:
- 7784-24-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Aluminum potassium sulfate dodecahydrate ACS reagent, ≥98% | 237086 | 100g | $62.7 |
| Aluminum potassium sulfate dodecahydrate ACS reagent, ≥98% | 237086 | 2.5kg | $603 |
| Aluminium potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 1.01047 | 1kg | $275 |
| Aluminium potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 1.01047 | 25kg | $3410 |
| Aluminum potassium sulfate dodecahydrate BioXtra, ≥98.0% | A7210 | 100g | $111 |
| More product size | |||
| Melting point | 92 °C(lit.) |
|---|---|
| Boiling point | 200°C |
| Density | 1.757 g/mL at 25 °C(lit.) |
| bulk density | 900kg/m3 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: soluble0.5M, clear, colorless |
| form | Solid |
| Specific Gravity | 1.757 |
| color | White |
| Odor | Odorless |
| PH Range | 3.3 |
| PH | 3.0-3.5 (25℃, 50mg/mL in H2O) |
| Water Solubility | 140 G/L (20 ºC) |
| Thermal Conductivity | 2.092 W/(m·K) |
| Merck | 14,360 |
| Stability | Stable. Incompatible with steel, aluminium, copper, zinc, bases, strong oxidizing agents. |
| Cosmetics Ingredients Functions | ASTRINGENT |
| InChI | 1S/Al.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4 |
| InChIKey | GNHOJBNSNUXZQA-UHFFFAOYSA-J |
| SMILES | O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O |
| LogP | -1.031 (est) |
| CAS DataBase Reference | 7784-24-9(CAS DataBase Reference) |
| Substances Added to Food (formerly EAFUS) | ALUMINUM POTASSIUM SULFATE |
| SCOGS (Select Committee on GRAS Substances) | Aluminum potassium sulfate |
| FDA 21 CFR | 310.545 |
| EWG's Food Scores | 2 |
| FDA UNII | 1L24V9R23S |
| NIST Chemistry Reference | potassium aluminum sulfate dodecahydrate(7784-24-9) |
| Cosmetics Info | Potassium Alum |
| UNSPSC Code | 12352302 |
| NACRES | NB.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280-P271 | |||||||||
| Hazard Codes | Xn,Xi | |||||||||
| Risk Statements | 36/38-22-36/37/38-21/22 | |||||||||
| Safety Statements | 22-24/25-37/39-26-36-20-13-2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | WS5690000 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 28332990 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| NFPA 704 |
|
Aluminium potassium sulfate dodecahydrate price More Price(51)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 237086 | Aluminum potassium sulfate dodecahydrate ACS reagent, ≥98% | 7784-24-9 | 100g | $62.7 | 2026-03-19 | Buy |
| Sigma-Aldrich | 237086 | Aluminum potassium sulfate dodecahydrate ACS reagent, ≥98% | 7784-24-9 | 2.5kg | $603 | 2026-03-19 | Buy |
| Sigma-Aldrich | 1.01047 | Aluminium potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 7784-24-9 | 1kg | $275 | 2026-03-19 | Buy |
| Sigma-Aldrich | 1.01047 | Aluminium potassium sulfate dodecahydrate for analysis EMSURE? ACS,Reag. Ph Eur | 7784-24-9 | 25kg | $3410 | 2026-03-19 | Buy |
| Sigma-Aldrich | A7210 | Aluminum potassium sulfate dodecahydrate BioXtra, ≥98.0% | 7784-24-9 | 100g | $111 | 2026-03-19 | Buy |
Aluminium potassium sulfate dodecahydrate Chemical Properties,Uses,Production
Chemical Properties
The PhEur 6.0 describes potassium alum as a granular powder, or colorless, transparent, crystalline masses. The JP XV describes it as colorless or white crystals or powder. Potassium alum is odorless and has a slightly sweet, strongly astringent taste.
Chemical Properties
Aluminum is the most commonly available element in homes and workplaces. Aluminum is readily available for human ingestion through the use of food additives, antacids, buffered aspirin, astringents, nasal sprays, and antiperspirants; from drinking water; from automobile exhaust and tobacco smoke; and from using aluminum foil, aluminum cookware, cans, ceramics, and fi reworks. Workers who are at risk for toxicity are those in refi neries, foundries and also welders and grinders.
Chemical Properties
white to colourless crystals
Uses
Buffer; floccculating reagent.
Uses
Aluminium potassium sulfate dodecahydrate is a white crystal that is soluble in water. It is made by roasting alunite in a furnace and then harvesting the product by crystallization. Aluminium potassium sulfate dodecahydrate was used to harden gelatin emulsions by introduction, by bathing the exposed plates prior to development, or by use in the fixing bath. Mixed with citric or other acids, it was also used as a clearing bath to remove developer stains in negatives.
Uses
potassium alum (alum) is a cosmetic astringent.
Definition
ChEBI: A hydrate resulting from the the formal combination of anhydrous potassium aluminium sulfate with 12 mol eq. of water.
Definition
A group of double salts withthe formula A2SO4.B2(SO4)3.24H2O,where A is a monovalent metal and Ba trivalent metal. The original examplecontains potassium and aluminium(called potash alum orsimply alum); its formula is oftenwritten AlK(SO4)2.12H2O (aluminiumpotassium sulphate-12-water). Ammoniumalum is AlNH4(SO4)2.12H2O,chrome alum is KCr(SO4)2.12H2O, etc.The alums are isomorphous and canbe made by dissolving equivalentamounts of the two salts in waterand recrystallizing.
Production Methods
Potassium alum is manufactured by treating bauxite with sulfuric acid and then potassium sulfate. Alternatively, aluminum sulfate is reacted with potassium sulfate.
General Description
Aluminum potassium sulfate dodecahydrate is an inorganic sulfate salt of aluminum and potassium. Linear growth rates of (100), (111) and (110) faces of its crystals have been investigated.
Health Hazard
Prolonged periods of exposure to aluminum and dust cause symptoms of toxicity that include, but are not limited to, coughing, wheezing, shortness of breath, memory loss, learning diffi culty, loss of coordination, disorientation, mental confusion, colic, heartburn, fl atulence, and headaches. Chronic exposures to alumina dust cause irritation to the eyes,
reaction suitability
reagent type: catalyst
core: aluminum
Pharmaceutical Applications
Potassium alum precipitates proteins and is a powerful astringent.
The ability to precipitate proteins is utilized in the manufacture of
vaccines, where purified proteins are coprecipitated with and
adsorbed onto potassium alum.
Potassium alum is often included in preparations used as
mouthwashes or gargles and in dermatological preparations, and
it may be used as a topical hemostatic, either as a solid or as a
solution. Intravesical instillation of potassium alum, typically as a
1% solution, has been used for hemorrhagic cystitis.
Safety
Potassium alum is often included in preparations used as
mouthwashes or gargles and in dermatological preparations.
Large doses of potassium alum act as an irritant and may be
corrosive; gum necrosis and gastrointestinal hemorrhage have
occurred. Acute encephalopathy has been reported following
bladder irrigation with alum solutions in the treatment of bladder
hemorrhage. Anecdotal evidence suggests that this practice should
be avoided for patients with renal insufficiency.
storage
Store in a cool, dry place in tightly closed containers. Stable under normal temperatures and pressures. When kept for a long time at 60–65°C (or over sulfuric acid) potassium alum dodecahydrate loses water, which is reabsorbed on exposure to air. It becomes anhydrous at about 200°C.
Purification Methods
Crystallise it from weak aqueous H2SO4 (ca 0.5mL/g). Its solubility (%) in H2O is 5.7 (0o), 12.0 (20o) and 136.9 (100o).
Incompatibilities
Potassium alum is incompatible with strong oxidizing agents, aluminum, copper, steel, and zinc. When it is dispensed in powders with phenol, salicylates, or tannic acid, gray or green colors may be developed owing to traces of iron in the alum.
Precautions
Aminocarb decomposes on heating and produces toxic fumes, irritating fumes, and oxides of nitrogen. During handling of aminocarb workers should wear protective clothing, gloves, face shield, breathing protection and avoid open flames.
Regulatory Status
GRAS listed. Included in the FDA Inactive Ingredients Database (vaginal; suppository). Included in medicines licensed in the UK.
Aluminium potassium sulfate dodecahydrate Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Dangtong Import and export Co LTD | +86-86-4001020630 +8619831957301 | admin@hbdangtong.com | China | 1000 | 58 |
| HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD | +86-15350851019; +8615350851019 | admin@86-ss.com | China | 999 | 58 |
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 | niki@zlchemi.com | China | 7245 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21591 | 55 |
| Cangzhou Wanyou New Material Technology Co.,Ltd | 18631714998 | sales@czwytech.com | CHINA | 904 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8615060885618 | sales@amoychem.com | China | 6369 | 58 |
| Shenyang Simchoice Chemical Co.,Ltd | +86-024-23769576 +86-15040101888 | sales@simchoicechem.com | China | 254 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | factory@coreychem.com | China | 29795 | 58 |
| Neostar United (Changzhou) Industrial Co., Ltd. | +86-0519-85551759 +8613506123987 | marketing1@neostarunited.com | China | 8828 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 | faithe@yan-xi.com | China | 5853 | 58 |
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View Lastest Price from Aluminium potassium sulfate dodecahydrate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-04-28 | Aluminium potassium sulfate dodecahydrate
7784-24-9
|
US $980.00-750.00 / ton | 1ton | 99% | 5000 | HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD | |
 |
2026-04-28 | Aluminium potassium sulfate dodecahydrate
7784-24-9
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
 |
2026-02-25 | Aluminium potassium sulfate dodecahydrate
7784-24-9
|
US $185.00-150.00 / ton | 1ton | 99% | 8000ton | Hebei Dangtong Import and export Co LTD |
-
- Aluminium potassium sulfate dodecahydrate
7784-24-9
- US $980.00-750.00 / ton
- 99%
- HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
-
- Aluminium potassium sulfate dodecahydrate
7784-24-9
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- Aluminium potassium sulfate dodecahydrate
7784-24-9
- US $185.00-150.00 / ton
- 99%
- Hebei Dangtong Import and export Co LTD
