Product Description
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Merck Chemicals (Shanghai) Co., Ltd. is the subsidiary of the globally operating group Merck KGaA, Darmstadt (Germany) and provides Chinese market with high quality life science and chemical products and services
The contact persons for the specific product groups of the Chemicals businesses are listed on the website of Merck Group in China.
AI Product Description
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Perchloric acid (70–72%) is a powerful inorganic oxidizing agent and strong mineral acid widely utilized across industrial, laboratory, and analytical sectors. Its primary application lies in analytical chemistry, particularly for the digestion of organic and inorganic samples to prepare them for trace metal analysis via techniques such as Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma (ICP). Due to its exceptional ability to dissolve refractory materials like platinum, gold, and various alloys, it serves as a critical reagent in metallurgy and semiconductor manufacturing for etching and cleaning surfaces. Furthermore, it acts as a catalyst in organic synthesis for specific esterification reactions and nitration processes, though these applications require extreme caution due to its aggressive nature.
Handling this chemical demands rigorous safety protocols because of its severe hazards. Perchloric acid is highly corrosive, causing instant and deep tissue burns upon contact with skin or eyes. More critically, at concentrations above 50%, especially when heated or concentrated by evaporation, it becomes a potent explosive hazard. It can form shock-sensitive perchlorate salts upon contact with organic matter, wood, paper, or certain metals, which may detonate violently. Therefore, it must never be stored near combustible materials or used in closed systems where fumes could condense into dry perchlorates.
Strict engineering controls are mandatory. All operations involving heating or concentration must occur exclusively in specialized fume hoods designed for perchloric acid, featuring water-washed ductwork to prevent salt accumulation. Personal protective equipment (PPE), including acid-resistant aprons, face shields, and gloves, is essential. In case of spills, neutralization with sodium carbonate or lime followed by copious water rinsing is required, but only if the spill does not involve dry residues. Proper waste disposal involves dilution and neutralization before discharge according to local environmental regulations. Given its high risk profile, users must undergo specialized training and maintain up-to-date Safety Data Sheets (SDS) on-site to ensure safe handling and storage practices.