The product we are introducing here is High - Quality Ammonium thiocyanate with a CAS number of 1762 - 95 - 4 and comes at a good price. Ammonium thiocyanate has a chemical formula of NH₄SCN. It appears as colorless, hygroscopic crystals or a white crystalline powder. The molar mass of ammonium thiocyanate is approximately 76.12 g/mol. It has a density of about 1.305 g/cm³ at 25 °C. The melting point of ammonium thiocyanate ranges from 149 - 154 °C. It is highly soluble in water, alcohol, and acetone, and its solubility in water increases with rising temperature.
1. **Analytical Chemistry**: Ammonium thiocyanate is widely used in analytical chemistry as a reagent. It can be employed in the determination of various metal ions such as iron(III). When ammonium thiocyanate reacts with iron(III) ions, it forms a blood - red complex, which is a characteristic reaction for the qualitative and quantitative analysis of iron.
2. **Textile Industry**: In the textile industry, it is used as a dyeing and printing auxiliary. It can help improve the color fastness and uniformity of dyes on fabrics, enabling more vivid and long - lasting colors.
3. **Pharmaceutical Industry**: Some pharmaceutical processes use ammonium thiocyanate as an intermediate in the synthesis of certain drugs. It participates in chemical reactions to form specific chemical structures required for drug development.
4. **Electroplating Industry**: It can be used as an additive in electroplating solutions. By adjusting the properties of the electroplating bath, it helps improve the quality and appearance of electroplated layers.
1. **Handling and Storage**: When handling ammonium thiocyanate, wear appropriate personal protective equipment, including gloves and safety glasses, to avoid direct contact with the skin and eyes. Store it in a cool, dry place, away from heat sources and incompatible substances such as strong oxidizers.
2. **In Analytical Chemistry**: Prepare a solution of ammonium thiocyanate of a known concentration. Add it drop - by - drop to the sample solution containing the metal ions to be detected. Observe the color change. For quantitative analysis, use a spectrophotometer to measure the absorbance of the colored complex and compare it with a standard curve.
3. **In the Textile Industry**: Dissolve the appropriate amount of ammonium thiocyanate in water according to the specific dyeing or printing process requirements. Add the solution to the dye bath or printing paste, and then immerse or print the fabric in the mixture under suitable temperature and time conditions.
4. **In the Pharmaceutical and Electroplating Industries**: Follow the specific chemical synthesis or electroplating process recipes. Add ammonium thiocyanate at the appropriate stage of the reaction or process, and strictly control the reaction conditions such as temperature, pH, and reaction time.
1. **Analytical Case**: A laboratory was tasked with determining the iron content in an environmental water sample. They prepared a 0.1 M ammonium thiocyanate solution. After adding a small amount of acid to the water sample to prevent hydrolysis of iron ions, they added the ammonium thiocyanate solution drop - by - drop. A blood - red color immediately appeared. By using a spectrophotometer and comparing the absorbance with a pre - prepared standard curve, they accurately determined the iron concentration in the water sample, which helped in the assessment of water quality.
2. **Textile Dyeing Case**: A textile factory was using a new type of reactive dye for cotton fabric dyeing. By adding ammonium thiocyanate as an auxiliary in the dye bath, they found that the color of the dyed fabric became more vivid and the color fastness improved significantly. After washing and rubbing tests, the color change of the fabric was much less than that of the samples dyed without ammonium thiocyanate, meeting the high - quality requirements of the market.
3. **Pharmaceutical Synthesis Case**: A pharmaceutical company was synthesizing a new anti - inflammatory drug. Ammonium thiocyanate was used as an intermediate in one of the key reaction steps. By carefully controlling the reaction conditions and the amount of ammonium thiocyanate, they successfully synthesized the target compound with a high yield, which promoted the progress of the drug development project.
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