10138-04-2 Usage
Description
Ammonium iron(III) sulfate, also known as iron(III) ammonium sulfate, is a chemical compound with the formula (NH4)2Fe(SO4)2. It is a pale violet crystalline solid that is soluble in water and insoluble in alcohol. The compound has acidic aqueous solutions and is known for its various applications across different industries.
Uses
Used in Dyeing and Printing Industry:
Ammonium iron(III) sulfate is used as a mordant in the dyeing and printing of fabrics and textiles. It helps to fix the dye to the fabric, ensuring colorfastness and durability.
Used in Analytical Chemistry:
The compound is employed as an analytical reagent in various chemical analyses, thanks to its reactivity and solubility properties.
Used in Medicine:
Ammonium iron(III) sulfate is also utilized in the medical field, where it can be used for specific therapeutic applications or as a component in the formulation of certain pharmaceutical products.
Physical Properties:
The dodecahydrate form of ammonium iron(III) sulfate is a lilac to violet crystal, while the anhydrous compound is colorless. The hydrated crystals lose all their water molecules at 230°C and readily dissolve in water, making them suitable for various applications. However, they are insoluble in alcohol, which is an important consideration for their use in different industries.
Synthesis
Dissolve industrial crystalline ferrous sulfate in water. Filtration, adding sulfuric acid to the filtrate, heating to 30-45 ° C, and then adding 25-30 mL of nitric acid for oxidation. The solution gradually turned from tan to light reddish brown. Use potassium ferricyanide solution to check whether the ferrous ions in the solution are completely oxidized. The solution was slowly heated until it was smoking and a thick slurry was formed, and the nitric acid and nitrogen oxides were removed. Add water to dissolve, re-evaporate until a crystalline film appears, add water and filtered hot solution of ammonium sulfate to this saturated solution, and add concentrated sulfuric acid. Cool to 0°C under stirring, and filter and crystallize to obtain pure ferric ammonium sulfate.
Preparation
Ferric ammonium sulfate is prepared by mixing an equimolar solution of ferric sulfate, Fe2(SO4)3, and ammonium sulfate, (NH4)2SO4. Hydrated crystals are obtained following evaporation and cooling of the solution.
Preparation
Ferric ammonium sulfate is prepared by mixing an equimolar solution offerric sulfate, Fe2(SO4)3, and ammonium sulfate, (NH4)2SO4. Hydrated crystals are obtained following evaporation and cooling of the solution.
Flammability and Explosibility
Notclassified
Purification Methods
Crystallise it from aqueous ethanol.
Check Digit Verification of cas no
The CAS Registry Mumber 10138-04-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,1,3 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 10138-04:
(7*1)+(6*0)+(5*1)+(4*3)+(3*8)+(2*0)+(1*4)=52
52 % 10 = 2
So 10138-04-2 is a valid CAS Registry Number.
InChI:InChI=1/Fe.H3N.2H2O4S/c;;2*1-5(2,3)4/h;1H3;2*(H2,1,2,3,4)/q+2;;;/p-3
