What is Citric acid CAS 77-92-9 ?

Citric acid CAS 77-92-9 is usually a white crystalline powder, highly soluble in water, with a sour taste, and stable at normal temperature and pressure. It is a common organic acid, widely present in citrus fruits, and is also a commonly used additive in the food industry and daily chemical field.

Specification

Application

Citric acid CAS 77-92-9 has a variety of important applications in electronic chemicals, mainly including chip cleaning, battery fields, electroplating, etc., as follows:

• Chip cleaning: Electronic-grade citric acid can be used for cleaning after chip polishing, effectively removing excessive metal ions and impurities on the chip surface, and improving the performance and stability of the chip. In addition, it can also be used as a buffer solution to adjust the pH value of the chip polishing liquid and optimize the polishing effect.
• In the field of batteries: In the recycling of spent lithium-ion batteries, citric acid can be used as an leaching agent and chelating agent. Through specific reactions, it dissolves metal ions such as lithium, nickel, cobalt, and manganese in the battery and forms stable complexes. After a series of treatments, new electrode materials are obtained. In aqueous zinc-ion batteries, citric acid can regulate the solvation structure of zinc ions and the pH value of the electrolyte, form a solid electrolyte interface together with other substances, inhibit hydrogen evolution and side reactions, and extend the battery’s service life.
• In the electroplating industry, citric acid mainly serves as a complexing agent and buffer in electroplating solutions. It can form stable complexes with metal ions such as nickel and copper, making the metal ions more evenly distributed in the electrolyte, which helps to form a fine and smooth coating. At the same time, it can also reduce side reactions during the electroplating process and improve current efficiency.
• Electrochemical micromachining: Citric acid can be used as the electrolyte for electrochemical micromachining, for processing materials such as stainless steel. By applying a magnetic field in the citric acid electrolyte, the material removal rate and processing accuracy can be enhanced.

Features

1.Acidity: It is an organic acid with a weak acidic aqueous solution. It can neutralize alkalis and can be used to adjust the pH of a system.

2.Chelating Property: It can form stable complexes (chelates) with metal ions such as calcium, magnesium, and iron, which can be used to remove scale and prevent food from oxidative discoloration.

3.Reducing Property: It has a certain degree of reducing property and can react with oxidants under specific conditions, making it suitable for reduction processes in certain industrial fields.

4.Low Toxicity: It occurs naturally in food, and synthetic versions also meet safety standards. It is harmless to the human body within the prescribed dosage, which is a key prerequisite for its widespread use in the food and pharmaceutical industries.

5.Customization: Products with different molecular weights, mesh sizes, and content can be customized according to customer requirements.

Packaging

We usually package：Bottle: 100g/ bottle, Bag: 1kg/ bag or 5kg/ bag.
Packaging can also be customized according to customer requirements.