dyeing intermediate chemicals

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