
Factory Supply Ferrous chloride tetrahydrate, with the CAS number 13478 - 10 - 9, is a significant inorganic compound. Its chemical formula is FeCl₂·4H₂O. This product is usually in the form of light green to blue - green crystals. It is highly soluble in water, and the solution is acidic due to the hydrolysis of ferrous ions.
The molecular weight of Ferrous chloride tetrahydrate is approximately 198.81 g/mol. It has a density of around 1.93 g/cm³. In terms of stability, it should be stored in a cool, dry place away from strong oxidizing agents and alkalis as it may react under certain conditions.
1. Water Treatment: Ferrous chloride tetrahydrate is widely used in water treatment processes. It can effectively remove impurities such as heavy metals, phosphates, and suspended solids from water. The ferrous ions can react with certain pollutants to form insoluble precipitates, which can be easily removed through sedimentation or filtration.
2. Chemical Synthesis: It serves as an important raw material in chemical synthesis. For example, it can be used in the preparation of other iron - containing compounds. It can react with some organic or inorganic reagents to form new substances with specific properties.
3. Dyeing Industry: In the dyeing industry, it can be used as a mordant. A mordant helps the dye to bond more firmly to the fabric, improving the color fastness of the dyed product.
When using Ferrous chloride tetrahydrate in water treatment, first, determine the appropriate dosage according to the quality and volume of the water to be treated. Usually, it is added to the water in a dissolved state. The solution can be prepared by slowly adding the product to water while stirring to ensure complete dissolution. The reaction time also needs to be controlled for optimal results.
In chemical synthesis, the reaction conditions such as temperature, pressure, and reaction time should be strictly controlled according to the specific reaction requirements. Appropriate protective equipment such as gloves and goggles should be worn during the operation to prevent contact with the skin and eyes.
For the dyeing industry, the fabric should be pre - treated properly before adding the mordant. Then, the fabric is soaked in the solution containing Ferrous chloride tetrahydrate for a certain period to allow the mordant to be adsorbed onto the fabric evenly.
1. Water Treatment in a Small - scale Water Plant: A small - scale water plant was facing problems with high phosphate levels in the incoming water. By adding an appropriate amount of Ferrous chloride tetrahydrate, the phosphate concentration was significantly reduced. First, a laboratory test was conducted to determine the optimal dosage. Then, the product was dissolved in water and added to the treatment tank. After a reaction time of about 30 minutes, followed by sedimentation for 1 hour, the phosphate level dropped from 3 mg/L to less than 0.5 mg/L, meeting the water quality standards.
2. Chemical Synthesis of Iron Oxide: A chemical research institute was trying to synthesize a specific type of iron oxide. They used Ferrous chloride tetrahydrate as the starting material. Under controlled temperature and pH conditions, it was reacted with a certain alkaline solution. After a series of purification steps, high - purity iron oxide was obtained, which could be used in the production of magnetic materials.
3. Dyeing of Cotton Fabrics: A textile company wanted to improve the color fastness of its cotton fabrics. They used Ferrous chloride tetrahydrate as a mordant. The cotton fabrics were first scoured and bleached. Then, they were soaked in a solution containing the mordant for 2 hours at 60°C. After that, the fabrics were dyed with a reactive dye. The color fastness of the dyed fabrics was significantly improved, with a rating of 4 - 5 on a scale of 1 - 5 in terms of color fastness to washing.
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