5-Amino-1-naphthalenesulfonic acid, with the CAS number 84 - 89 - 9, is a high - quality chemical product. It is a white to slightly yellow crystalline powder. The molecular formula of this compound is C₁₀H₉NO₃S, and its molecular weight is approximately 223.25 g/mol. This product is known for its high purity and is available at the best market price, making it highly cost - effective for various applications.
It has a melting point range of around 300 °C (decomposition). In terms of solubility, it is sparingly soluble in cold water but more soluble in hot water. It is also soluble in alkaline solutions. The chemical structure of 5 - Amino - 1 - naphthalenesulfonic acid contains an amino group (-NH₂) and a sulfonic acid group (-SO₃H) attached to a naphthalene ring, which endows it with unique chemical properties.
5 - Amino - 1 - naphthalenesulfonic acid has a wide range of applications in different industries. In the dye industry, it serves as an important intermediate for the synthesis of various dyes. It can be used to produce acid dyes, reactive dyes, and direct dyes. These dyes are widely used for dyeing textiles, leather, and paper, offering bright colors and good color fastness.
In the pharmaceutical industry, this compound can be used as a building block for the synthesis of certain drugs. Its unique chemical structure allows it to participate in various chemical reactions to form more complex molecules with potential biological activities. Additionally, it can be used in the research and development of new drugs, providing a starting point for the design of novel drug candidates.
In analytical chemistry, 5 - Amino - 1 - naphthalenesulfonic acid can be used as a reagent for the detection and quantification of specific substances. It can react with certain metal ions or organic compounds to form colored complexes, which can be used for colorimetric analysis.
When using 5 - Amino - 1 - naphthalenesulfonic acid, it is important to follow proper safety procedures. Wear appropriate personal protective equipment, such as gloves and safety glasses, to avoid direct contact with the skin and eyes. In case of contact, immediately rinse with plenty of water and seek medical advice if necessary.
For synthesis purposes, the product should be stored in a cool, dry place away from direct sunlight and sources of heat. When adding it to a reaction mixture, add it slowly while stirring to ensure uniform mixing. The reaction conditions, such as temperature, pressure, and pH, should be carefully controlled according to the specific reaction requirements.
If using it in an analytical method, prepare the appropriate solutions according to the protocol. The concentration of the reagent and the reaction time should be optimized to achieve accurate and reproducible results.
Case 1: Dye Manufacturing
A textile dyeing company used 5 - Amino - 1 - naphthalenesulfonic acid as an intermediate to synthesize a new reactive dye. They carefully controlled the reaction conditions, including the molar ratio of reactants, reaction temperature, and pH. By using this high - quality product, they were able to produce a dye with excellent color fastness and bright color. The new dye was well - received in the market, increasing the company's competitiveness.
Caso 2: Investigación farmacéutica
A pharmaceutical research team used 5 - Amino - 1 - naphthalenesulfonic acid as a starting material for the synthesis of a potential anti - cancer drug candidate. Through a series of chemical reactions, they modified the structure of the compound to enhance its biological activity. Although the drug is still in the research phase, the initial results showed promising anti - tumor effects, demonstrating the potential of this compound in drug development.
Case 3: Analytical Chemistry
A laboratory used 5 - Amino - 1 - naphthalenesulfonic acid as a reagent for the colorimetric determination of iron ions in water samples. They optimized the reaction conditions, such as the amount of reagent added and the reaction time, to achieve high sensitivity and accuracy. The method was successfully applied to the analysis of real - world water samples, providing reliable data for water quality monitoring.
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