Hydrogen is one of the least dense gases known to exist, only slightly denser than air.1/14, i.e.0 At 0°C and under standard atmospheric pressure, the density of hydrogen is0.0899 g/LHydrogen can be used as a filling gas for airships and balloons (due to its flammability, it is not very safe, and airships now mostly use helium for filling). Hydrogen is mainly used as a reducing agent.
Use hydrogen for diseases above.
Basic Introduction Edit
Introduction
Chinese Name:Hydrogen
Alias:Pure hydrogen;Liquid Hydrogen;High-purity hydrogen;Compressed Hydrogen
English Name:Hydrogen
English Alias:-Compressed hydrogen; molecular hydrogen
CAS:133-74-0
EINECS:215-605-7
Chemical Formula:H2
Relative Molecular Mass:2.0157
Hydrogen production occurs through the electrolysis of water, yielding hydrogen and oxygen gases.
Safety Protection
Deuterium is non-toxic and asphyxiating.
Hydrogen is highly flammable and explosive; if there's a loud bang when it burns, it indicates impure hydrogen; an explosion may occur.
So, this requires sufficient attention. See hydrogen for more information.
Flammability
Henan hydrogen is a flammable gas, accounting for a volume fraction in the air of4%Please provide the Chinese content you would like translated into American English.75%Hydrogen can burn at all times. The enthalpy change of hydrogen combustion is -286 kJ/molManufacturer produces:
2 H2(g) + O2(g) → 2 H2O(l); ΔH = -572 kJ/mol
Zhengzhou hydrogen content4%Please provide the Chinese content that you would like translated into American English.74%Mixed with air at a certain concentration or occupy5%Please provide the Chinese content to be translated.95%A gas that is explosive when mixed with chlorine at certain concentrations, and is easily ignited by heat, sunlight, or sparks. The ignition point of hydrogen is500 °CPure hydrogen and oxygen mixture emits ultraviolet light when burned.
Because hydrogen is lighter than air, its flame tends to rise quickly, thus causing less harm than the combustion of hydrocarbons. Hydrogen reacts with all elemental oxidizing agents. Hydrogen spontaneously reacts with chlorine (under light) at room temperature. Hydrogen and fluorine gases can explode when mixed in a cool, dark environment, producing potentially hazardous hydrochloric or hydrofluoric acids.
Emergency Response to Hydrogen Ignition
Evacuate personnel from the contaminated area to the upwind location and isolate them; strictly control entry and exit. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive-pressure breathing apparatus and fire-resistant protective clothing. Attempt to cut off the source of the leak. Ventilate properly to accelerate dispersion. If possible, use exhaust fans to direct the escaping gas to an open area or install appropriate spray heads to burn it off. Properly dispose of the leaking container; repair and inspect it before reuse. Firefighting method: cut off the gas source. If the gas source cannot be immediately cut off, do not extinguish the burning gas. Cool the container with water spray; if possible, move the container away from the fire to an open area. Fire extinguishing agents: mist, foam, carbon dioxide, and dry powder.
Industrial Use
1.Hydrogen is a primary industrial raw material and a significant industrial gas and specialty gas in Zhengzhou, Henan. It finds broad applications in the petrochemical, electronics, metallurgy, food processing, float glass, fine organic synthesis, aerospace, and other sectors. Hydrogen is also an ideal secondary energy source (secondary energy refers to energy that must be produced from a primary energy source like solar power or coal). Generally, hydrogen combines with oxygen. This characteristic makes it a natural reducing agent used in processes to prevent oxidation. In the high-temperature processing of glass manufacturing and the production of electronic microchips, hydrogen is added to nitrogen-purged atmospheres to remove residual oxygen. In the petrochemical industry, hydrogenation is necessary for refining crude oil through desulfurization and hydrogenation cracking. Another important use of hydrogen is in the hydrogenation of fats in products like butter substitutes, cooking oils, shampoos, lubricants, household cleaners, and more. Due to its high fuel properties, the aerospace industry uses liquid hydrogen as fuel.
2.Raw materials for ammonia, methyl alcohol, and hydrochloric acid synthesis; metallurgical reducing agents; and hydrogen desulfurization agents in oil refining.
Cautionary Notes
Hydrogen is a colorless, odorless, non-toxic, flammable, and explosive gas. Mixing it with fluorine, chlorine, oxygen, carbon monoxide, or air poses an explosion risk. Among these, a mixture of hydrogen and fluorine can spontaneously explode at low temperatures and in darkness. The mixture with chlorine has a volume ratio of...1：1When exposed to light, it can also explode. Hydrogen, being colorless and odorless, has a transparent flame upon combustion, making its presence difficult to detect by the senses. In many cases, ethyl mercaptan with a foul odor is added to hydrogen to make it detectable by smell, and it also colors the flame.
Hydrogen is non-toxic and inert in the body, but an increase in its concentration in the air can cause asphyxiation due to oxygen deficiency. Like all cryogenic liquids, direct contact with liquid hydrogen can cause frostbite. A spill of liquid hydrogen and its sudden, widespread evaporation can also lead to environmental oxygen deficiency and may form explosive mixtures with air, potentially causing combustion and explosion incidents. Mixture with air can form explosive combinations, which will explode upon contact with heat or open flame. Being lighter than air, if leaked indoors, it rises and lingers at the ceiling, difficult to disperse, and can cause an explosion upon contact with a spark. Hydrogen reacts violently with halogens such as fluorine, chlorine, and bromine.
Hydrogen, being a flammable compressed gas, should be stored in a cool, well-ventilated storeroom. The temperature inside the storeroom should not exceed30Keep away from ignition sources and heat. Protect from direct sunlight. Store separately from oxygen, compressed air, halogens (fluorine, chlorine, bromine), oxidizers, etc. Absolutely avoid mixing storage and transportation. Lighting and ventilation facilities in the storage room should be explosion-proof, switches located outside the warehouse, and fire-fighting equipment of appropriate types and quantities should be provided. Prohibit the use of machinery and tools that can generate sparks. During inspection, pay attention to the product name and the date of inspection. The products stored first should be used first. Handle with care to prevent damage to cylinders and accessories.
Product Brand:Nian Long
Packaging:Steel cylinder
Specs:40L
Material:Official
