High Quality Sodium Chromate CAS 7775-11-3 is a significant inorganic compound. Its chemical formula is Na2CrO4. It usually exists as a yellow crystalline solid at room temperature. The molecular weight of Sodium Chromate is approximately 161.97 g/mol.
This product is highly soluble in water, and its aqueous solutions are alkaline due to the hydrolysis of the chromate anion. It has a density of about 2.72 g/cm³. The melting point of Sodium Chromate is around 792 °C. The product is known for its high purity, which ensures reliable performance in various applications.
1. **Metal Treatment**: Sodium Chromate is widely used in metal treatment processes. It can be used as a passivating agent for metals such as iron, steel, and aluminum. By forming a thin, protective oxide layer on the metal surface, it enhances the corrosion resistance of the metals, thereby increasing their service life and reducing maintenance costs.
2. **Dyeing and Pigment Industry**: It serves as an important raw material in the production of dyes and pigments. Many chrome - based dyes and pigments are prepared using Sodium Chromate. These dyes and pigments are known for their bright colors, good light - fastness, and chemical stability, and are widely used in textile, paint, and printing industries.
3. **Electroplating**: In the electroplating industry, Sodium Chromate can be used as an additive in the electroplating bath. It helps to improve the quality of the electroplated layer, making it more uniform, smooth, and corrosion - resistant. This is crucial for applications where the appearance and performance of the electroplated parts are of high importance.
**1. Storage**: Store Sodium Chromate in a cool, dry, and well - ventilated place. It should be kept away from incompatible substances such as acids, reducing agents, and organic materials. The storage container should be tightly sealed to prevent moisture absorption and contamination.
**2. Handling**: When handling Sodium Chromate, appropriate personal protective equipment (PPE) should be worn, including gloves, goggles, and a lab coat. Avoid inhalation, ingestion, and skin contact. In case of accidental contact, immediately flush the affected area with plenty of water and seek medical attention.
**3. Preparation of Solutions**: When preparing Sodium Chromate solutions, slowly add the solid to the water while stirring continuously. This helps to prevent the formation of lumps and ensures complete dissolution. The concentration of the solution should be adjusted according to the specific application requirements.
**Case 1: Metal Passivation in the Automotive Industry**
A major automotive manufacturer was facing corrosion issues with its steel components. They decided to use our high - quality Sodium Chromate for metal passivation. After treating the steel parts with a Sodium Chromate solution, the corrosion resistance of the parts was significantly improved. The treated parts were tested in a salt - spray test, and they showed a much longer time before the appearance of rust compared to the untreated parts. This not only improved the overall quality of the automotive products but also reduced the after - sales service costs related to corrosion - related failures.
**Case 2: Dye Production in the Textile Industry**
A textile dye manufacturer was looking for a high - quality raw material to produce chrome - based dyes. They used our Sodium Chromate in their production process. The dyes produced with Sodium Chromate had bright and vivid colors. Moreover, the color fastness of the dyed textiles was excellent. When the dyed textiles were washed multiple times, the color remained almost unchanged. This led to an increase in customer satisfaction and a boost in the manufacturer's market share.
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Este é o William, Diretor Executivo da Zhishang Chemical Co., Ltd.
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