Quinoline 2 Carboxylic Acid Quinaldic Acid
quinoline thiophene imidazole thiazole

Quinoline-2-carboxylic acid (Quinaldic acid)

Taiy Chemical

    Specifications

    HS Code

    303772

    Chemical Formula C10H7NO2
    Molar Mass 173.17 g/mol
    Appearance White to yellowish crystalline powder
    Melting Point 155 - 158 °C
    Boiling Point 328 - 330 °C
    Solubility In Water Slightly soluble
    Solubility In Organic Solvents Soluble in ethanol, chloroform, etc.
    Pka Value 2.46
    Odor Odorless
    Stability Stable under normal conditions

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    General Information
    Where to Buy Quinoline-2-carboxylic acid (Quinaldic acid) in China?
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    Frequently Asked Questions

    As a leading Quinoline-2-carboxylic acid (Quinaldic acid) supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

    What is the main use of quinoline-2-carboxylic acid (quinalidinic acid)?
    Borax (sodium borate) is an important material and has a wide range of uses. In the industrial field, it has many applications. In the metallurgical industry, it is often used as a flux. Cover because it can reduce the melting point of metal oxides, promote the separation of metals and impurities, and improve the purity of metals. For example, when smelting copper, borax can help remove impurities contained in the ore, making the quality of copper better.
    In chemical production, borax is also a common raw material. It can be used to make special glass, which has good heat resistance and chemical stability, such as borosilicate glass commonly used in laboratories, where borax plays a key role. It is also used to produce ceramic glazes, making the ceramic surface smooth and bright.
    In the field of medicine, borax is also useful. It has the effect of disinfection and antiseptic. It can be made into an external disinfectant to clean wounds, mouths, etc., to prevent the growth of bacteria and help wounds heal.
    In daily life, borax also has traces. In the past, it was occasionally added in some food processing, but now it has been strictly limited due to health factors. It was once used to make pasta, which can increase its toughness and elasticity. However, too much borax intake will endanger human health, so it is rarely used in this regard today.
    Furthermore, in agriculture, borax can be used as a trace element fertilizer. Appropriate application can promote plant root growth, enhance plant resistance, and improve crop yield and quality. Borax is an indispensable trace element for plant growth. Timely supplementation of borax can prevent various diseases caused by boron deficiency in plants.
    What are the physical properties of quinoline-2-carboxylic acid
    Borax (sodium tetraborate) is an important inorganic compound with unique physical properties.
    Borax usually appears as a colorless translucent crystal, or a white crystalline powder, which is easily recognizable in appearance. Its touch is delicate, like stroking fine sand, but it has a unique texture of crystals.
    Borax has a certain solubility. In water, it can slowly dissolve, but the dissolution speed is not very fast, and it needs to be stirred properly and time to be completely dissolved. Moreover, its solubility varies with temperature changes, and the solubility will increase accordingly when the temperature increases.
    The density of borax is moderate, compared with some heavy metal salts, the density is small, and the texture is relatively light. Under normal ambient temperatures, borax is relatively stable and is not prone to spontaneous chemical changes.
    Furthermore, borax has a certain melting point. When the temperature reaches a certain value, borax will change from solid to liquid. This melting point is of critical significance for its application in industry and scientific research. For example, in the metallurgical industry, the use of borax's melting point characteristics can help the melting and purification of metals, reduce the melting point of metals, and make them easier to process and form.
    Borax also has a certain degree of hygroscopicity. In a more humid environment, it will absorb moisture in the air. If stored improperly, caking may occur. Therefore, it is necessary to store borax to keep the environment dry. < Br >
    The performance of borax under light is also characterized by its crystal structure, which causes light to refract and other optical phenomena, exhibiting unique optical properties, which may play a role in the research and application of some optical materials.
    What are the chemical properties of quinoline-2-carboxylic acid (quinalidine acid)
    Borax (sodium borate) is an important chemical substance with unique chemical properties and various characteristics.
    Borax, its chemical formula is usually expressed as\ (Na_2 [B_4O_5 (OH) _4]\ cdot8H_2O\). First and foremost, borax is alkaline. In aqueous solutions, the hydrolysis of borate ions makes the solution alkaline. This property makes it used in many fields, such as in some chemical processes, can be used to adjust the pH of the solution.
    Furthermore, borax has certain stability. Under normal temperature, borax can exist stably and is not prone to spontaneous chemical reactions. However, under certain conditions, such as high temperature, borax will dehydrate, lose crystalline water, and then transform into anhydrous borax.
    Borax can also react with acids. When it meets strong acids, borate ions will combine with hydrogen ions to form boric acid. Boric acid is a weak acid. This reaction reflects the salt properties of borax and can be used to prepare boric acid or to adjust the composition of reaction systems in related chemical production.
    In addition, borax can act as a flux in some metal-related chemical reactions. Because it can reduce the melting point of metal oxides and promote the melting of metal oxides at relatively low temperatures, it is used in metallurgy and other fields to assist in the refining and processing of metals. The solubility of borax in water is also one of its important chemical properties. Borax is soluble in water within a certain temperature range, and its solubility increases with increasing temperature. This property makes it useful in the preparation of certain solutions and industrial processes, such as as as a solvent or reaction medium for certain boron-containing compounds.
    What are the synthesis methods of quinoline-2-carboxylic acid (quinalidine acid)?
    The synthesis method of borax (metaboric acid) has been used in ancient times, and there are many methods, each with its own strengths.
    One is the boromagnetite method. First take the boromagnetite powder, put it in a high temperature furnace with soda ash, and calcinate it. During this time, the boromagnetite reacts chemically with soda ash to form borax and other by-products. This process requires controlling the temperature. If the temperature is too high or too low, it will affect the yield and purity of borax. After calcination is completed, the product is taken out, leached in water, and the borax is dissolved in water. After filtration, evaporation, crystallization and other steps, borax crystals can be obtained. The chemical principle is that the main component of boromagnetite and soda ash undergo a metathesis reaction at high temperature, and boron is transferred to borax.
    The second is the carbon-alkali method. Boromagnetite is used as raw material, mixed with sodium bicarbonate solution, and reacted under a specific pressure and temperature. This reaction is milder and does not require extremely high temperatures. Sodium bicarbonate decomposes to produce carbon dioxide, which participates in the reaction and promotes the dissolution of boron from boromagnetite to form borax. After the reaction is completed, borax is obtained by separating impurities, concentrating and crystallizing. The advantage of this method is that it has low energy consumption and relatively low equipment requirements.
    The third is the sulfuric acid method. Boromagnetite is reacted with sulfuric acid, boron is converted into boric acid, and then boric acid is reacted with sodium hydroxide to obtain borax. First, boromagnetite is decomposed with sulfuric acid, and boron is dissolved. Boron enters the Then, adjust the pH of the solution to precipitate boric acid. Then the boric acid is reacted with an appropriate amount of sodium hydroxide, evaporated, concentrated, cooled and crystallized, and the borax is crystallized. This process involves a multi-step reaction, and the reaction conditions need to be precisely controlled to ensure the quality of borax.
    All the synthesis methods are selected according to their raw materials, equipment, cost and other factors, which are all good strategies for preparing borax.
    What is the price range of quinoline-2-carboxylic acid in the market?
    If you have any questions today, ask what the price range of sugar cubes and citric acid (tetragalic acid) is in the market. These two are in the market, and the price of sugar cubes often varies depending on the quality, the different brands, and the amount. If you are an ordinary sugar cube, the price per catty is about ten to thirty yuan. A brand of high quality and fame, or a small quantity and a fine package, the price may be slightly higher, up to fifty yuan per catty.
    As for citric acid, the price is not one. It can be found in pharmacies or chemical stores. Because its uses involve many medical and chemical industries, the price is more complicated than that of sugar cubes. The price of ordinary citric acid is about twenty to fifty yuan per two. If it is a high-quality product that is refined and suitable for medical use, the price will be very expensive, every two or to 100 yuan.
    However, the price of the market often changes due to changes in time and the supply and demand of goods. During the New Year, when the need for sugar cubes is high, the price may increase slightly. And citric acid, if it encounters the rise of chemical industry, the price will also rise. Therefore, if you want to know the exact price, you need to go to the market in person and ask the merchants before you can get it.