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Deuterium gas is an elemental substance of stable hydrogen isotopes with the molecular formula D₂. It is a colorless and odorless gas at room temperature and atmospheric pressure. Sharing similar chemical properties with hydrogen, it remains stable under normal conditions. Being flammable, it can form explosive mixtures when mixed with air. Its CAS number is 7782-39-0, and it is also known as heavy hydrogen gas.
As a key raw material for high-end industries, it is mainly used in nuclear fusion experiments and the production of deuterated solvents for nuclear magnetic resonance. It is also widely applied in semiconductor wafer processing, laser technology, optical fiber manufacturing and industrial leak detection. Classified as a flammable and explosive hazardous material, it must be stored, transported and used in strict accordance with safety regulations by professional personnel.
Pure fluorine refers to elemental fluorine gas (F₂). At room temperature and atmospheric pressure, it is a pale yellow toxic gas with a strong pungent odour. As the elemental substance with the strongest non-metallicity and oxidizing property in nature, it features extremely active chemical properties. Except for some noble gases, it can react violently with nearly all elements and compounds. It may cause fire or explosion when contacting combustibles, and is highly corrosive and toxic, classified as a high-risk chemical.
Pure fluorine must be stored in specially made sealed containers. Strict safety regulations shall be followed during operation. It is widely used in semiconductor etching, high-end fluorine material synthesis, aerospace, military industry and fine chemical engineering, serving as an essential raw material for high-tech industries. Its handling and transportation must be conducted by qualified professionals.
Antimony pentafluoride, with the chemical formula SbF₅, is a colorless, transparent, viscous, oily liquid at room temperature. It has low boiling and melting points and is highly volatile. It is a typical strong Lewis acid with extremely high chemical reactivity; it can combine with fluoride ions to form a stable antimony hexafluoride anion. It is also the key raw material for the preparation of the superacid antimony fluoride, whose acidity far exceeds that of concentrated sulfuric acid. This product is highly corrosive and hygroscopic; it reacts violently with water, releasing corrosive fumes, and must be strictly isolated from moisture and stored in a sealed container. As a high-end catalytic raw material, its unique physicochemical properties make it widely used in fluorochemical catalysis, semiconductor processes, new energy materials, and the synthesis of high-end pharmaceutical intermediates, making it a key material in the specialty fine chemicals sector.
KrF and ArF gases, collectively referred to in the industry as “(excimer) laser gases,” belong to the category of specialty gases used in semiconductor applications, specifically for photolithography processes. These gases require cutting-edge purification technologies, precise gas mixtures, and a stringent quality management system to ensure batch-to-batch product consistency.
The XeCl laser serves different systems through two distinct mechanisms: In the cardiovascular field, it employs a “cold ablation” approach to directly vaporize calcified plaques, making it a crucial tool for interventional treatment of severe calcification. In dermatology, the same wavelength of light is specifically absorbed by immune cells involved in disease, enabling precise immunomodulation for the treatment of vitiligo and psoriasis. Ophthalmology utilizes an ArF excimer laser (193 nm), whose “ablation effect” is exceptionally fine; by breaking molecular bonds in the cornea, it facilitates tissue remodeling and forms the cornerstone of procedures such as myopia correction (LASIK). Together, these three applications highlight the therapeutic value of laser medicine—precision, targeting, and efficiency.
Excimer lasers for scientific research and industrial applications are gas-based laser media used to generate high-power pulsed lasers at specific wavelengths. Their primary function is to produce laser beams with industrial or scientific applications through gas discharge in corresponding devices. The application areas of these laser beams include deep-ultraviolet lithography light sources in chip manufacturing, industrial processing beams for material cutting and surface treatment, and excitation light sources for scientific research. The gas composition, purity, and related technical specifications of these lasers depend on specific performance parameters such as wavelength, output power, and repetition rate, all of which must comply with particular industrial and scientific application standards.
In display panel manufacturing, high-purity gases are critical process materials: argon (Ar), nitrogen (N₂), and helium (He) are used for film deposition and etching environments as well as for protective purposes; fluorine-based (CF₄) and chlorine-based (Cl₂) gases are employed in dry etching processes; photolithography equipment requires a mixed gas of krypton/fluorine/neon (Kr/F₂/Ne) for its light source; and high-purity nitrogen is essential for providing an inert environment during high-temperature processes and packaging stages. The ultra-high purity and stable supply of these gases directly impact the precision, yield, and cost of display panels.
The fluorine-argon-neon mixed gas is composed of three gases—fluorine, argon, and neon—mixed together in specific proportions. This mixed gas is also known as the Fluoro-Argon-Neon mixed gas and has the chemical name F-Ar-Ne mixed gas. In this mixture, "Fluoro" refers to fluorine, "Argon" refers to argon, and "Neon" refers to neon.
The argon-xenon-neon mixed gas leverages the discharge luminescence properties of inert gases and is primarily used in specialized lighting and electrical equipment. It produces a stable arc with high brightness and pure-colored light, making it widely applicable in automotive HID xenon headlights, stadium floodlights, and large-scale projectors.
Hydrogen chloride is a critically important basic chemical, and its most representative form is hydrochloric acid when dissolved in water. In the electronics industry, high-purity hydrogen chloride gas—especially electronic-grade—is known as the “master sculptor” in semiconductor manufacturing.
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