Calcium Sulphate Dihydrate 500gm
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Calcium sulfate dihydrate, chemically represented as CaSO4·2H2O, appears as a fine, white to off-white powder. It is odorless and typically occurs as a crystalline solid. In its natural form, it is known as gypsum, which can be found in various geological formations. When heated, gypsum loses its water of crystallization, transforming into calcium sulfate hemihydrate (CaSO4·0.5H2O), commonly known as plaster of Paris, which has important applications in construction and art.
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Calcium Sulphate Dihydrate
In laboratory settings, calcium sulfate dihydrate (gypsum) finds several applications:
- Desiccant: It is used as a drying agent to absorb moisture in desiccators and storage areas.
- Chemical Reagent: It serves as a source of calcium ions and sulfate ions in various chemical reactions and precipitation processes.
- Cement and Plaster: Gypsum is used in the preparation of dental and impression plasters, as well as in the formulation of certain types of cements.
- pH Buffer: It can be used in pH adjustment and buffer solutions due to its ability to provide sulfate ions which can influence pH.
- Education and Demonstration: Gypsum is often used in educational settings for experiments and demonstrations due to its solubility properties and its role in various chemical processes.
When handling calcium sulfate dihydrate (gypsum) in laboratory settings, it’s important to consider the following safety precautions:
- Eye and Skin Protection: Wear safety goggles and gloves to prevent contact with eyes and skin. Gypsum dust can irritate the eyes and may cause irritation or dryness of the skin with prolonged exposure.
- Respiratory Protection: If working with powdered forms of gypsum that could generate dust, use a dust mask or respirator to avoid inhalation. Inhaling gypsum dust can irritate the respiratory tract.
- Handling and Storage: Handle gypsum carefully to prevent spills and minimize dust generation. Store it in a dry area away from moisture to maintain its stability and prevent degradation.
- Personal Hygiene: Wash hands thoroughly after handling gypsum and before eating, drinking, or using the restroom to avoid unintentional ingestion.
- Disposal: Dispose of gypsum waste according to local regulations. Avoid disposing of large quantities of gypsum into water sources as it can affect aquatic life.
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Calcium hydroxide, also known as hydrated lime, is a chemical compound with the formula Ca(OH)2. It is a white, odorless, and alkaline substance that is produced by adding water to calcium oxide, also known as quicklime. The resulting reaction produces calcium hydroxide and releases a large amount of heat.
Hydrated lime is commonly used in various industrial applications such as water treatment, construction, agriculture, and food processing. It is also used as a pH regulator and a flocculant in wastewater treatment plants. Additionally, it is used in the production of cement, as a soil stabilizer, and in the manufacture of chemicals such as calcium stearate and calcium hypochlorite.
In summary, calcium hydroxide, or hydrated lime, is a chemical compound with various industrial applications, produced by adding water to calcium oxide.
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