Pure 98% Sulfuric Acid Reagent ACS Grade For Electronic / Semiconductor Industry

Reagent Sulfuric Acid 98% is a high-purity acid (typically ACS grade) with maximum concentration before fuming, offering strong acidity, exceptional dehydrating power, and low impurity levels. It is a fundamental laboratory and industrial reagent.

1. Laboratory & Analytical Chemistry

• Standard Solution Preparation: Primary acid for preparing precise volumetric solutions and titrants.
• Sample Digestion: Used in COD (Chemical Oxygen Demand), Kjeldahl nitrogen, and heavy metal analysis to destroy organic matrices with minimal contamination.
• Desiccant: Maintains extremely dry atmospheres in desiccators and glove boxes.
• Reagent for Qualitative Analysis: Employed in tests for halides, nitrates, and various functional groups.

2. Organic & Fine Chemical Synthesis

• Dehydrating & Condensing Agent: Promotes esterification, etherification, and dehydration reactions in pharmaceutical and fragrance intermediate synthesis.
• Nitration & Sulfonation: Key reagent for introducing nitro or sulfonic acid groups into aromatic rings for drugs, dye, and pigment production.
• Catalyst: Provides strong acid catalysis with minimal side reactions due to high purity.

3. Electronics & Semiconductor

• SPM (Sulfuric Peroxide Mixture): Blended with hydrogen peroxide for wafer cleaning and photoresist removal; the 98% grade ensures maximum cleaning efficiency and is the industry standard for silicon wafer processing.
• High-Purity Material Synthesis: Used to prepare electronic-grade sulfates and etching solutions.

4. Environmental & Water Quality Testing

• TOC Analyzer Reagent: For acidification and inorganic carbon removal in total organic carbon analysis.
• Preservation & Pre-treatment: Acidifies water samples for nutrient (e.g., ammonia, phosphate) and metal preservation prior to analysis.