The product, Factory Supply naphthol as - d with CAS number 135 - 61 - 5, is an important chemical in the industry. Its chemical name is N-(3-Hydroxy-2-naphthoyl)aniline. It appears as a yellow - orange powder.
Regarding its physical and chemical properties, the melting point of naphthol as - d is around 243 - 246°C. It is insoluble in water but soluble in organic solvents such as ethanol, acetone, and benzene. The purity of our factory - supplied product is carefully controlled to ensure high - quality performance. Usually, the purity can reach over 98%, which is tested by advanced analytical methods like high - performance liquid chromatography (HPLC).
Naphthol as - d has a wide range of applications. One of its main uses is in the dye and pigment industry. It serves as an important intermediate for the synthesis of azo dyes. Azo dyes are widely used in textile printing and dyeing, as they can produce a variety of bright and fast - colored dyes. These dyes have good color fastness to light, washing, and rubbing, which makes them suitable for different types of fabrics, including cotton, wool, and synthetic fibers.
In addition, it is also used in the production of pigments for the paint and coating industry. Pigments made from naphthol as - d can provide excellent hiding power and color stability, which are crucial for high - quality paints and coatings used in automotive, industrial, and architectural applications.
When using naphthol as - d, it is necessary to follow strict safety procedures. First, wear appropriate personal protective equipment, such as gloves, safety glasses, and a lab coat. Since it is insoluble in water, when preparing solutions for further chemical reactions, organic solvents should be used. For example, when using ethanol as a solvent, add the naphthol as - d slowly to the ethanol while stirring gently to ensure complete dissolution.
In the reaction process, control the temperature and reaction time strictly. Different reactions may require different temperature ranges. For example, in some azo - coupling reactions, the reaction temperature is usually controlled between 0 - 5°C to ensure the yield and quality of the final product.
Case 1: Textile Printing and Dyeing
A textile factory in Asia needed to produce a batch of high - quality red - colored cotton fabrics. They used naphthol as - d as an intermediate to synthesize a specific azo dye. First, they dissolved naphthol as - d in an appropriate amount of ethanol. Then, through a series of chemical reactions including diazotization and coupling reactions, they obtained the desired azo dye. The dyed cotton fabrics showed excellent color fastness. After multiple washes and exposure to sunlight, the color remained bright, which met the high - standard requirements of the international market.
Case 2: Paint Production
A paint manufacturer in Europe was developing a new type of automotive paint. They used naphthol as - d to produce a pigment with high hiding power and color stability. By carefully controlling the reaction conditions in the pigment synthesis process, they obtained a pigment with excellent performance. The paint made from this pigment showed good adhesion, scratch resistance, and long - term color retention on automotive surfaces, which was well - received by the automotive industry.
If you have any questions or need more information about our Factory Supply naphthol as - d cas 135 - 61 - 5, please feel free to contact us. Our email is info@vivalr.com, and our phone number is (86) 15866781826. We are committed to providing you with high - quality products and professional services.
This is William, CEO of Zhishang Chemical Co., Ltd.
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