KELEX-100,7-(4-ETHYL-1-METHYLOCTYL)-8-HYDROXYQUINOLINE

KELEX-100, that is, 7- (4-ethyl-1-methyloctyl) -8-hydroxyquinoline, is widely used, especially in the field of metallurgical extraction.
In the extraction and separation of rare metals and non-ferrous metals, KELEX-100 plays a key role. Taking the extraction of metals such as nickel and cobalt as an example, in a specific process system, KELEX-100 can use its unique chemical structure to specifically bind with metal ions, thereby realizing the efficient and selective separation of nickel and cobalt ions from complex ore leaching solutions or other metal-containing solutions. By adjusting many conditions in the extraction process, such as the pH of the solution, the concentration of KELEX-100, the extraction temperature, etc., the extraction effect can be optimized, and the collection rate and purity of metals can be improved.
In addition, in the field of chemical analysis, KELEX-100 can also be used as an excellent analytical reagent. When qualitative or quantitative analysis of some metal elements, the characteristics of stable complexes with metal ions can be used to accurately determine the content of metal ions by means of analytical methods such as spectrophotometry. Because the complexes formed with metal ions often have specific color and spectral characteristics, they provide a convenient and reliable basis for analysis and detection.
KELEX-100 has also made its mark in the surface treatment of materials. In the surface modification process of some metal materials, KELEX-100 is introduced into the treatment liquid to form a dense protective film with specific properties on the metal surface. This protective film can not only enhance the corrosion resistance of metal materials, but also improve the lubrication and wear resistance of its surface, thereby prolonging the service life of metal materials and broadening its application range.

KELEX-100 is 7- (4-ethyl-1-methyloctyl) -8-hydroxyquinoline. The chemical properties of this substance are as follows:
Its appearance is often light yellow to amber viscous liquid. In terms of solubility, it is difficult to dissolve in water, but it is easily soluble in organic solvents, such as common kerosene and toluene. This property allows it to effectively distribute between the organic phase and the aqueous phase during the extraction process.
In terms of chemical activity, the 8-hydroxyquinoline part contains hydroxyl and nitrogen atoms, giving it unique coordination ability. The oxygen atom and nitrogen atom in the hydroxyl group can be used as electron pair donor to coordinate with a variety of metal ions to form stable metal complexes. This property makes it widely used in the field of metal extraction, which can be used to selectively extract specific metal ions from aqueous solutions. For example, it has strong extraction ability for copper ions. In copper-containing solutions, it can form hydrophobic complexes with copper ions, and then transfer to the organic phase to realize the separation of copper ions from other impurity ions.
Furthermore, the substance has certain chemical stability. Under normal temperature and environmental conditions, it is not easy to decompose or deteriorate. However, when it is in a strong acid and alkali environment, its structure may be affected. Under strong acid conditions, the hydroxyl group may undergo protonation, changing its coordination properties; in a strong alkali environment, some chemical bonds in the molecule may be broken, affecting its extraction function.
In addition, KELEX-100 also has certain surface activity. Due to the presence of hydrophilic polar groups (hydroxyl and nitrogen atoms) and hydrophobic alkyl long chains in its molecular structure, it can reduce surface tension at the interface and exhibit surfactant-like properties. This property is helpful for the mass transfer process at the liquid-liquid interface during the extraction process and improves the extraction efficiency.

KELEX-100 is 7- (4-ethyl-1-methyloctyl) -8-hydroxyquinoline, which has many physical properties. Its color is yellowish to light brown, and it is liquid at room temperature. It is clear and transparent in appearance, and has a special smell.
In terms of melting and boiling point, the melting point is very low, and it is liquid at room temperature and pressure. The boiling point is quite high, about 260-270 ° C. This characteristic allows it to boil and vaporize in a higher temperature environment.
In terms of solubility, it is insoluble in water, but it can be miscible with most organic solvents, such as aromatics such as toluene and xylene, as well as aliphatic hydrocarbon solvents such as cyclohexane and n-heptane. It also has good solubility in alcohols and ether solvents. This solubility enables effective separation from the aqueous phase in chemical operations such as extraction, and realizes the transfer of specific metal ions from the aqueous phase to the organic phase.
The density is about 0.95 - 0.98 g/cm3, which is lighter than water. In the mixed system of water and organic solvents, if the organic phase contains KELEX-100, it will float above the aqueous phase.
In addition, KELEX-100 has surface activity, which can reduce the surface tension of the liquid and enrich at the interface. During the extraction process, it can promote the complex formed by metal ions and the extractant to enter the organic phase more easily, improving the extraction efficiency and selectivity.

KELEX-100, that is, 7- (4-ethyl-1-methyl-octyl) -8-hydroxyquinoline, its preparation process is as follows:
First, the corresponding raw materials need to be prepared. 4-ethyl-1-methyl-octanol and 8-hydroxyquinoline are all indispensable materials. The quality of the raw materials has a deep impact on the quality of the product, and it must be strictly controlled. < Br >
Initiation of the reaction, 4-ethyl-1-methyl octanol is slowly added to the reactor in a specific ratio. In this process, temperature regulation is crucial, and it is necessary to accurately maintain the appropriate range. If the temperature is too high or too low, the reaction rate may be out of control or the product is impure. Subsequently, under stirring, 8-hydroxyquinoline is slowly added, and the stirring rate should also be reasonably controlled. Too fast or too slow is not conducive to the full progress of the reaction.
During the reaction, the reaction process needs to be closely monitored. Analytical methods such as liquid chromatography and mass spectrometry can be used to determine the content of each substance in the reaction system in real time, so as to accurately grasp the reaction progress. At the same time, the pH, pressure and other conditions of the reaction environment also have a great impact on the reaction, and it should be ensured that it is always at the optimum setting value.
When the reaction is over, the resulting product still contains impurities and needs to be purified. Generally, the extraction operation is carried out first, and the appropriate extractant is selected to separate the target product from the reaction mixture. After extraction, distillation is carried out to further purify the product according to the difference in boiling points of different substances to remove residual impurities.
Finally, the quality inspection of the purified product is carried out to verify whether the indicators meet the standards. Such as purity, impurity content, chemical structure, etc., are all key testing items. Only products that meet all indicators can be regarded as qualified products and can be packaged, stored and applied.
Each step of this preparation process requires fine operation and strict monitoring, so that high-quality KELEX-100, namely 7 - (4 - ethyl - 1 - methyloctyl) - 8 - hydroxyquinoline, can be produced consistently.

KELEX-100 is 7- (4-ethyl-1-methyloctyl) -8-hydroxyquinoline, an organic compound commonly used in metal extraction. During use, many key precautions need to be paid attention to.
First safety protection. Because of its certain chemical activity, it is necessary to wear suitable protective equipment when contacting, such as gloves, goggles and protective clothing, to prevent skin contact and splashing into the eyes. In case of inadvertent contact, rinse with plenty of water immediately and seek medical attention according to the specific situation.
This is the storage condition. Store in a cool, dry and well-ventilated place, away from sources of ignition and oxidants. Due to its chemical properties, improper storage or deterioration can affect the use effect.
Furthermore, precise control of the dosage during use is crucial. According to the specific reaction requirements and system characteristics, the dosage is accurately determined. Excessive or insufficient amounts may have adverse effects on the extraction efficiency and reaction results.
In addition, the operating environment cannot be ignored. It is necessary to operate in a fume hood to avoid the accumulation of its volatile gases in the environment and endanger the health of the operator. At the same time, close attention should be paid to the control of the reaction temperature and time. Under different reaction conditions, its performance may vary, and the appropriate temperature and time can achieve the best reaction effect.
Repeat, proper disposal of the residue after use is also extremely important. Follow relevant environmental regulations to classify and dispose of waste containing this substance to prevent environmental pollution.
Finally, be sure to fully understand its chemical properties and reaction characteristics before use, and be familiar with the operation process, so as to ensure the safe, efficient and reliable use process.