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Aluminium potassium sulfate dodecahydrate CAS#7784-24-9

Chemical Name：Aluminium potassium sulfate dodecahydrate

CAS No.:7784-24-9

Appearance: White Solid

Molecular Formula：AlH8KO5S

Molecular weight:186.2

Sample: Available

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Products Description of Aluminium potassium sulfate dodecahydrateCAS#7784-24-9

Potassium aluminum sulfate dodecahydrate industrial product purity ≥ 99%, colorless transparent crystal, odorless. Melting point 92.5℃ (loses crystal water), boiling point decomposes. Vapor pressure negligible (25℃), relative density 1.757 (20℃). Solubility in water: highly soluble, slightly soluble in glycerol, insoluble in ethanol. Stable, incompatible with strong bases and carbonates.

Aluminium potassium sulfate dodecahydrate Chemical Properties

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)
Merck	14,360
Stability:	Stable. Incompatible with steel, aluminium, copper, zinc, bases, strong oxidizing agents.
Cosmetics Ingredients Functions	ASTRINGENT
LogP	-1.031 (est)
CAS DataBase Reference	7784-24-9(CAS DataBase Reference)
NIST Chemistry Reference	potassium aluminum sulfate dodecahydrate(7784-24-9)

Safety Information

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

Product Application of Aluminium potassium sulfate dodecahydrateCAS#7784-24-9

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.

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