Electronic grade isopropanol is a high-purity grade product of isopropanol, also known as dimethyl methanol or 2-propanol, and is referred to as IPA in the industry. Electronic grade isopropanol is an ultra-clean, high-purity reagent characterized by its high purity, stringent quality requirements, demanding environmental cleanliness standards, and high product value. Its purification process is crucial, with the primary goal of removing metal ions, moisture, and organic impurities to ensure the product meets high-purity standards, such as the SEMI C12 standard. Purification methods include multi-stage distillation, azeotropic distillation, molecular sieve adsorption, activated carbon adsorption, ion exchange resins, ion exchange fibers, microfiltration and nanofiltration, as well as low-temperature crystallization.

Main Applications

Electronic grade isopropanol is primarily used for ultra-clean cleaning and drying of precision electronic products such as wafers, monocrystalline solar cells, and liquid crystal glass substrates, ensuring product cleanliness and performance stability.

Specific application scenarios include:

1. Semiconductor manufacturing: Used for cleaning silicon wafers and integrated circuit boards to remove surface impurities and residues; also used for drying silicon wafers to avoid watermarks and particle residues.

2. LCD panel cleaning: Used for cleaning TFT-LCD panels to remove organic contaminants and particles generated during the production process.

3. Optical film coating: Used as a solvent in the preparation of optical film coatings to ensure uniformity and high transparency of the coatings.

4. Precision optical processing: Used for cleaning and polishing optical components such as lenses and prisms.

5. Electronic component cleaning: Used for cleaning printed circuit boards (PCBs) and electronic components to ensure their performance and reliability.