10138-04-2
Ammonium iron (III) sulfate
CAS: 10138-04-2
Molecular Formula: FeH5NO4S
10138-04-2 - Names and Identifiers
| Name | Ammonium iron (III) sulfate |
| Synonyms | 10138-04-2 FERRIC ALUM ammonium ferric sulfate FERRIC AMMONIUM SULFATE AMMONIUM FERRIC SULPHATE AMMONIUM IRON(III) SULFATE Ammonium iron (III) sulfate FERRIC AMMONIUM SULFATE, SAT FERRIC ALUM INDICATOR VOLHARD ammoniumferricsulfate,12-hydrate |
| CAS | 10138-04-2 |
| EINECS | 233-382-4 |
| 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 |
10138-04-2 - Physico-chemical Properties
| Molecular Formula | FeH5NO4S |
| Molar Mass | 170.95 |
| Density | 1.710 |
| Melting Point | 39–41℃ [ALD94] |
| Water Solubility | very soluble H2O; insoluble alcohol [MER06] |
| Appearance | Liquid |
| Color | Clear amber |
| Stability | Stable. |
| Physical and Chemical Properties | Ammonium ferric sulfate is colorless octahedral crystals, generally slightly purple, in the air will turn light brown. |
| Use | Used as an analytical reagent, used as an indicator in the determination of halogen |
10138-04-2 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/38 - Irritating to eyes and skin. |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 3264 8/PG 3 |
10138-04-2 - Upstream Downstream Industry
| Raw Materials | Ammonium sulfate ferric sulfate |
10138-04-2 - Nature
Open Data Verified Data
light gray-purple crystals. The melting point is about 37 °c; The relative density is 1. 71. Easy weathering, soluble in water, insoluble in ethanol. 0. Imol.L-1 aqueous solution pH 2.5. The water of crystallization was removed by heating to 230 ° C. To be anhydrous.
Last Update：2024-01-02 23:10:35
10138-04-2 - Preparation Method
Open Data Verified Data
Industrial crystalline ferrous sulfate was dissolved in hot water. After filtration, sulfuric acid was added to the filtrate and heated to 30-45 °c. Further, 25-30ml of nitric acid was added for oxidation. The solution gradually turned from tan to light red-brown. The potassium ferricyanide solution was used to test whether the ferrous ions in the solution were completely oxidized. The solution was slowly heated to smoke and concentrated slurry to remove nitric acid and nitrogen oxides. Water was added to dissolve it and re-evaporated until a crystalline film appeared. Water and filtered ammonium sulfate hot solution were added to the saturated solution, and concentrated sulfuric acid was added. The crystals were cooled to 0 ° C. With stirring, and filtered with suction to obtain pure ammonium ferric sulfate.
Last Update：2022-01-01 09:00:25
10138-04-2 - Use
Open Data Verified Data
Analytical reagents. The metal salt solution was analyzed for cyanide. Used as indicator in the determination of halogen and in the pharmaceutical industry.
Last Update：2022-01-01 09:00:25
10138-04-2 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | ammonium ferric sulfate is widely used in urban drinking water, industrial circulating water purification treatment, chemical, petroleum, mining, paper, dyeing, brewing, steel, gas, paint, leather, pharmaceutical, food, electroplating and other industries of industrial wastewater and municipal sewage purification, sludge dewatering. It is mainly used in agriculture, can be used as a fertilizer, herbicide insecticide, cure wheat, fruit trees, potatoes, corn, vegetables, flowers and trees to control orchard pests and fruit tree rot disease, cure the stalks of Moss, lichen, etc.; Can also be used as a fertilizer, is a catalyst for the production of chlorophyll in flowers and trees, with phosphorus removal, nitrogen fixation, live potassium, loose soil, sterilization and insect control, strong root and strong stem, enhance the gloss of the fruit, water content, enhance photosynthesis, improve crop drought resistance, resistance to stress, reduce fruit rot, ring rot, spot disease, rust, powdery mildew and other diseases, and for fruit tree leaf disease, yellow leaf disease, fruit shrink disease has a strong prevention and control effect to increase income and increase production. |
| Use | ammonium ferric sulfate can be used as an analytical reagent and as an indicator in the determination of halogen. |
| production method | 1. Dissolve industrial crystalline ferrous sulfate in water. After filtration, sulfuric acid was added to the filtrate, heated to 30-45 °c, and 25-30ml of nitric acid was added for oxidation. The solution gradually turned from tan to light red-brown. The potassium ferricyanide solution was used to test whether the ferrous ions in the solution were completely oxidized. The solution was slowly heated to smoke and concentrated slurry to remove nitric acid and nitrogen oxides. Water was added to dissolve it and re-evaporated until a crystalline film appeared. Water and filtered ammonium sulfate hot solution were added to this saturated solution and concentrated sulfuric acid was added. It was cooled to 0OC with stirring, and the crystals were filtered with suction to obtain pure ammonium ferric sulfate. 2. Dissolve 1.84g of FeSO4 · 7H2O in of water, filter out the insoluble matter, add 22ml of concentrated sulfuric acid (relative density) to the filtrate and heat to 30-35 °c. To this solution was slowly added 25-30ml of concentrated nitric acid (relative density 1.38) in a fume hood and the solution was reddish brown at the end of the reaction. K3[Fe(CN)6] can be used to check whether the reaction is complete. If no blue precipitate is formed, it indicates that FeSO4 has been completely oxidized. To remove excess HNO3 and nitric oxide, the solution was placed on a water bath and evaporated to a syrup at a temperature of 80 °c. The addition of 200ml of water was followed by evaporation until a crystalline film appeared, I .e. a saturated solution of iron sulfate was obtained. Another 32g of (NH4)2SO4 was dissolved in 80ml of hot water containing 0.5 to 1ml of concentrated sulfuric acid, and filtered while hot. 240 ml of water and ammonium sulfate solution were added to the above ferric sulfate solution together, and after sufficient stirring, it was slowly cooled to 0 ° C., that is, a large amount of ammonium ferric sulfate dodecahydrate was crystallized and dried to obtain -250g crystals. Dissolve the above crystals in 200 ~ 220mL hot water acidified with a small amount of sulfuric acid, cool to 0 ℃, drain the precipitated crystals, at room temperature, drying may be performed on the filter paper for a short period of time. |
Last Update：2024-04-09 20:49:11
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View History
10138-04-2
3-piperidin-1-ium-4-yloxybenzoate
AMBERLITE IRC-50
AI3-03649
Cholanthrene, 20(3)-methyl
21(R)-Hydroxy Montelukast-d6
(2S,3S)-3-PHENYLGLYCIDOL
METHYL3,5-DIBROMOISONICOTINATE
bis(d-gluconato-o(sup1),o(sup2))zinc
花生四烯酸D8
3-piperidin-1-ium-4-yloxybenzoate
AMBERLITE IRC-50
AI3-03649
Cholanthrene, 20(3)-methyl
21(R)-Hydroxy Montelukast-d6
(2S,3S)-3-PHENYLGLYCIDOL
METHYL3,5-DIBROMOISONICOTINATE
bis(d-gluconato-o(sup1),o(sup2))zinc
花生四烯酸D8
Raw Materials for 10138-04-2