Description
Specifications Table
Product Name – Nitric Acid CMOS Grade
Quantity/Pack Size – 2.5 LT
Form – Liquid
Grade – CMOS
Application – Semiconductor processing, microelectronics, precision etching
Product Overview
Nitric Acid CMOS Grade is a high-purity reagent specifically formulated for advanced semiconductor and microelectronics applications. This ultra-clean acid undergoes rigorous purification to eliminate trace metal contaminants, ensuring minimal particulate interference in critical processes. With a concentration optimized for precision etching and surface treatment, it delivers consistent reactivity without compromising substrate integrity. The CMOS grade designation guarantees compliance with stringent industry standards for electronic-grade chemicals, making it indispensable for VLSI fabrication, photoresist stripping, and wafer cleaning protocols. Its low impurity profile prevents defect formation in sensitive microelectronic components, while the stabilized formulation minimizes degradation during storage. Engineered for reproducibility, this nitric acid maintains uniform performance across batches, reducing process variability in high-tech manufacturing environments. The packaging incorporates chemical-resistant materials to preserve purity during handling and transportation. Ideal for research facilities and production lines where contaminant control is paramount, this reagent supports the exacting demands of modern electronics manufacturing while adhering to international safety protocols for hazardous chemical handling.
FAQs
1. What is the typical metal impurity level in CMOS grade nitric acid?
The metal impurity levels are maintained below 10 ppb for critical elements like sodium, potassium, calcium, and iron, with most transition metals at sub-ppb concentrations to meet semiconductor industry requirements.
2. Can this nitric acid be used for gold refining processes?
While chemically capable of dissolving gold, CMOS grade nitric acid is over-specified for refining applications. The ultra-high purity increases cost without providing measurable benefits for precious metal recovery processes.
3. What is the recommended storage temperature range?
Store between 15-25°C in a dedicated acid storage cabinet with proper ventilation. Avoid temperature fluctuations that could accelerate container degradation or cause pressure buildup.
4. How does this compare to regular laboratory grade nitric acid?
CMOS grade undergoes additional distillation and filtration steps to remove sub-ppm impurities. Regular lab grade may contain 10-100x higher metal content and particulate matter, making it unsuitable for semiconductor applications.
5. What safety precautions are specific to this grade of nitric acid?
Beyond standard acid handling protocols, CMOS grade requires particulate-free environments during transfer to prevent contamination. Use only PTFE or PFA labware to maintain purity levels during dispensing.
