Cerium(IV) sulfate
Cerium sulfate solution
CAS: 17106-39-7
Molecular Formula: CeO8S2
Cerium(IV) sulfate - Names and Identifiers
Cerium(IV) sulfate - Physico-chemical Properties
| Molecular Formula | CeO8S2 |
| Molar Mass | 332.24 |
| Density | 3.01g/mLat 25°C(lit.) |
| Appearance | Liquid |
| Color | Yellow |
| Physical and Chemical Properties | Physical and chemical properties of colorless to green monoclinic or orthorhombic crystals. The relative density was 3.912. 920 degrees C decomposition. The pentahydrate is a white monoclinic crystal with a relative density of 3.17. Its octahydrate is a pink triclinic crystal with a relative density of 2.886. The nine hydrate is a white hexagonal needle-like crystal, the relative density of 2.831, 650 deg C decomposition. Soluble in cold or hot water. It is easily oxidized to tetravalent compounds in air. It is easy to form double salt with alkali metal sulfate. With the new preparation of ammonium carbonate warm solution, there is five cerium carbonate Ce2(CO3)3 ~ 5H2O precipitation formation. It can be oxidized to cerium (IV) by potassium permanganate. |
| Use | 1. Used as a color developer of aniline black and the preparation of colored glass. Its pentahydrate, octahydrate and nonahydrate are used as optical glass polishing materials. It can be used as a catalyst for the synthesis of amyl butyrate, butyl acetate and other compounds, of which amyl butyrate and butyl acetate can be used as food flavors and solvents. 4. It can be added into aluminum alloy to improve the corrosion resistance of the oxide film. It can be used as an additive to control membrane fouling in membrane bioreactor. |
Cerium(IV) sulfate - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R36/38 - Irritating to eyes and skin. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. |
| UN IDs | UN 2796 8/PG 2 |
| WGK Germany | 3 |
| RTECS | WS6960000 |
| Hazard Class | 8 |
| Packing Group | II |
Cerium(IV) sulfate - Introduction
Cerium (IV) sulfate is an inorganic compound with the chemical formula Ce(SO4)2. The following is an introduction to the nature, use, formulation and safety information of Cerium sulfate solution:
Nature:
cerium sulfate (IV) is a colorless crystal, soluble in water, the solution is acidic. It is a strong oxidant with good catalytic properties.
Use:
Cerium sulfate solution is commonly used in titration reactions in chemical analysis to determine the redox properties of substances, especially the concentration of oxidizing agents and reducing agents. In addition, it can also be used as a catalyst for certain chemical synthesis reactions.
Preparation Method:
Cerium sulfate solution is usually prepared by dissolving Cerium (IV) sulfate salts (such as Cerium (IV) sulfate tetrahydrate). An appropriate amount of cerium (IV) sulfate can be weighed and dissolved in an appropriate amount of solvent (e. G., water) to prepare a solution with an appropriate concentration.
Safety Information:
When Using Cerium sulfate solution, you need to pay attention to the following security issues:
1. Cerium sulfate (IV) solution has strong oxidation, avoid contact with flammable substances, organic compounds and other flammable and explosive substances.
2. Use cerium sulfate (IV) solution should wear appropriate personal protective equipment, including laboratory gloves, safety glasses, etc.
3. Avoid contact with skin and eyes, because cerium sulfate (IV) solution may cause irritation and corrosion to skin and eyes.
4. In the use of cerium sulfate (IV) solution, to ensure that the operation in a well-ventilated laboratory environment, to avoid inhalation of harmful gases volatilization solution.
5. When storing cerium sulfate (IV) solution, it should be kept in a closed, cool, dry place to avoid contact with moisture in the air to prevent degradation and pollution of the solution.
Nature:
cerium sulfate (IV) is a colorless crystal, soluble in water, the solution is acidic. It is a strong oxidant with good catalytic properties.
Use:
Cerium sulfate solution is commonly used in titration reactions in chemical analysis to determine the redox properties of substances, especially the concentration of oxidizing agents and reducing agents. In addition, it can also be used as a catalyst for certain chemical synthesis reactions.
Preparation Method:
Cerium sulfate solution is usually prepared by dissolving Cerium (IV) sulfate salts (such as Cerium (IV) sulfate tetrahydrate). An appropriate amount of cerium (IV) sulfate can be weighed and dissolved in an appropriate amount of solvent (e. G., water) to prepare a solution with an appropriate concentration.
Safety Information:
When Using Cerium sulfate solution, you need to pay attention to the following security issues:
1. Cerium sulfate (IV) solution has strong oxidation, avoid contact with flammable substances, organic compounds and other flammable and explosive substances.
2. Use cerium sulfate (IV) solution should wear appropriate personal protective equipment, including laboratory gloves, safety glasses, etc.
3. Avoid contact with skin and eyes, because cerium sulfate (IV) solution may cause irritation and corrosion to skin and eyes.
4. In the use of cerium sulfate (IV) solution, to ensure that the operation in a well-ventilated laboratory environment, to avoid inhalation of harmful gases volatilization solution.
5. When storing cerium sulfate (IV) solution, it should be kept in a closed, cool, dry place to avoid contact with moisture in the air to prevent degradation and pollution of the solution.
Last Update：2024-04-10 22:29:15
Cerium(IV) sulfate - Uses and methods of synthesis
Overview
cerium sulfate, colorless to green monoclinic or orthorhombic crystals, the pentahydrate is white monoclinic crystals, the octahydrate is pink triclinic crystals, nine hydrate is white hexagonal needle-like crystals, four are soluble in cold water, slightly soluble in hot water, soluble in dilute sulfuric acid; In acidic solution, with sodium oxalate reduction of cerium sulfate and made; can be used as a chromogenic agent of aniline black and the preparation of colored glass, and can be used for the preparation of food spices amyl butyrate, butyl acetate catalyst, but also can be used as a membrane bioreactor membrane fouling control additives; And its five hydrate, octahydrate, nonahydrate can be used as optical glass polishing materials.
preparation method
cerium oxide, cerium nitrate, Cerium oxalate and the like are heated with concentrated sulfuric acid to remove excess acid, or cerium sulfate is hydrated by heating at 350 to 400 ° C. To obtain an anhydrous product.
solution preparation and calibration methods
1. Preparation Method: Take 42g of cerium sulfate, add 500ml of water containing 28ml of sulfuric acid, heat and dissolve it, let it cool, add water to 1000mL, and shake it up. The stability of cerium sulfate titration solution is good, and the change of concentration will not be caused by long setting, light and heating, and it is not necessary to re-calibrate.
2. Calibration Method: Take the standard arsenic trioxide 105g dried at 0.15 ℃ to constant weight, precision weighing, adding sodium hydroxide titration solution (1mol/L)10ml medical | Education network to collect, dissolve by slight heat, add 50ml of water, 25ml of hydrochloric acid, 5ml of iodine monochloride test solution and 2 drops of ortho-Phenanthroline indicator solution, and heat to 50 ℃ when titrated with this solution to the near end point, titration was continued until the solution changed from light red to light green. Each 1ml of cerium sulfate titration solution (0.1mol/L) is equivalent to 4.946mg of arsenic trioxide.
The calibration principle is:
As2O3 6NaOH→2Na3AsO3 3H2O
Na3AsO3 H2O 2Ce4 →H3AsO3 2Ce3 2H
Last Update：2024-04-10 22:29:15
