Overview
Nitrogen (N₂) is a fundamental element in both nature and industry, making up 78% of Earth's atmosphere. Its inertness and abundance make it indispensable across sectors like agriculture, where it is a key component of ammonia-based fertilizers, and manufacturing, where it serves as a protective gas to prevent oxidation. Nitrogen is also vital in cryogenic applications, such as preserving biological samples and cooling superconductors. In its natural state, nitrogen exists as a diatomic molecule (N₂), which is highly stable due to a strong triple bond between the two nitrogen atoms. This stability makes it relatively unreactive under standard conditions, though it can form compounds like ammonia (NH₃) and nitric acid (HNO₃) through industrial processes like the Haber-Bosch method.
Physical and Chemical Properties
Nitrogen is a colorless, odorless gas with a density slightly lower than air (1.2506 g/L at 0°C). It liquefies at -195.8°C and solidifies at -210°C. Its low solubility in water (23.2 cm³/L at 0°C) and inert nature make it ideal for applications requiring non-reactive environments, such as food packaging and semiconductor manufacturing. Chemically, nitrogen's triple bond requires significant energy to break (945 kJ/mol), contributing to its low reactivity. However, it forms essential compounds like ammonia (via the Haber process) and nitrates, which are critical for fertilizers and explosives. Nitrogen also participates in biological nitrogen fixation, where bacteria convert N₂ into ammonia for plant uptake.
Main Applications
In agriculture, nitrogen is primarily used to produce ammonia-based fertilizers, which boost crop yields. The food industry relies on nitrogen for modified atmosphere packaging (MAP) to extend shelf life by displacing oxygen. In electronics, ultra-high-purity nitrogen prevents oxidation during chip fabrication. Nitrogen's cryogenic properties are exploited in medical and scientific fields for preserving biological samples and cooling MRI magnets. It also serves as a blanketing gas in chemical manufacturing to prevent combustion or degradation of sensitive materials. Additionally, nitrogen is used in tire inflation to reduce oxidation and pressure loss.
Safety and Storage
While nitrogen is non-toxic, it poses asphyxiation risks in confined spaces due to oxygen displacement. Proper ventilation and oxygen monitors are essential in storage areas. Cylinders should be secured upright and protected from physical damage or extreme heat. Liquid nitrogen requires specialized insulated containers to minimize evaporation and prevent frostbite hazards. Personal protective equipment (PPE), such as gloves and face shields, is mandatory when handling cryogenic nitrogen. Emergency protocols should address leaks and spills, particularly in poorly ventilated areas.
B2B Procurement Guide
B2B buyers should prioritize purity grades based on application: 99.5% for industrial uses (e.g., welding) and 99.999% for electronics or pharmaceuticals. Bulk purchases in liquid or compressed gas form often reduce costs, with prices ranging from $0.10 to $0.50 per cubic meter. Reliable suppliers should provide certificates of analysis (CoA) and adhere to ISO 8573 standards for compressed gases. Consider logistics, such as cylinder sizes (e.g., 40L to 50L for small-scale use) or cryogenic tanks for large volumes. Long-term contracts may offer price stability, especially for high-demand sectors like healthcare or food processing.
Related Manufacturers
- 主营：制氮机、氮气机、氮气发生器、氮气纯化装置、食品制氮机、煤矿制氮机、工业制氮机、分子筛制氮机、高纯度制氮机、膜分离制氮机、变压吸附制氮机、实验室用制氮机、工业psa制氮机、箱体式制氮机、PSA制氮机、小型制氮机、防爆制氮机、化工制氮机、大型制氮机、高纯制氮机、吸附式制氮机、变压吸附式制氮机、制氮机psa吸附式、碳分子筛制氮机、碳分子筛
- 主营：阀门流量流阻系数试验、呼吸阀校验台、压力表校验台、气瓶检测设备、水压试验设备、压力检测设备、气瓶自动化设备、气瓶充装设备、安全阀校验台、流量计壳体水压试验机、阀门水压试验机、测试台、爆破机、试验机、压缩机、疲劳机、增压泵、呼吸器
- 主营：浓度监、分析仪、监测仪、氮吹仪、剂量计、报警仪、天然气、能谱仪、测量仪、水质分、水分仪、半电池、黑度仪、测汞仪、测定仪、农残仪、接虫袋、流量计、浊度计、采样器、传声器、消解器、噪声计、酒石酸、硬度计
- 主营：变压吸附、制氢装置、焦炉煤气脱硫、变压吸附制氢装置、变压吸附脱碳、焦炉煤气制氢、甲醇裂解制氢、天然气制氢、活性炭、吸附剂、脱硫剂、催化剂
- 主营：脱硫剂、吸附剂、催化剂、活性炭、脱硝技术、变压吸附脱碳、焦炉煤气净化、变压吸附提纯氢气、余热锅炉脱硝、索拉燃机脱硫脱硝、焦炉煤气脱苯脱萘脱焦油、脱苯脱萘专用吸附剂、SCR脱硝技术、脱硫脱硝除尘一体化技术、变压吸附提纯脱除一氧化碳、变压吸附提纯脱除二氧化碳、甲醇裂解制氢、焦炉煤气制氢、硫化氢脱除、煤气精脱硫、低温SCR脱硝
- 主营：深冷空分、变压吸附制氧机、深冷空分制氧装置、制氮机、PSA变压吸附制氮机、液氮机、深冷空分制氮设备、深冷空分设备、深冷制氮机、深冷制氮装置、深冷空分高纯氮装置、氮封装置、深冷制氮系统装置、PSA制氮机、撬装式制氮机、制氧制氮成套装置、空压制氮设备、现场制氮设备、大型深冷空分、气动切断阀、撬装式深冷空分装置
- 主营：水压试验机、安全阀校验台、流量计壳体水压试验机、气瓶检测设备、气体充装设备、七氟丙烷钢瓶检测设备、氢气瓶检测设备、气瓶自动化设备、阀门水压试验机、阀门测试台、阀门流量流阻系数试验、呼吸阀校验台、压力表校验台、爆破机、疲劳机、试验机、压缩机、增压泵、呼吸器
- 主营：抓钢机、绳切割机、边凿毛机、制氮机、电动扳手、铲车改装、灌浆台车、岩石劈裂棒、液压轻质板、挖掘机液压、换热器扳手、液压顶管机、工程洗车机、头部取样机、挖掘机螺旋、液压动力站、智能张拉机、滚筒夯实机、测斜仪、等离子切割机、挖机属具、真空吸盘、锚索切割机、生物质燃料机、隧道凿毛机
- 主营：scr脱硝、窑炉脱硝、锅炉脱硝、脱硝设备、小型脱硝设备、SCR脱硝设备、SNCR脱硝、SDS干法脱硫、脱硝模块、除尘、脱硫脱硝工程、燃气锅炉脱硝、脱硝装置、脱硝、烟气脱硝、脱硝催化剂、脱硫脱硝除尘、脱硝工程总承包、脱硝喷枪、脱硫、脱硫脱硝、窑炉SCR脱硝
- 主营：扬尘监测设备、油烟监测设备、气象站设备、噪声监测设备、vocs监测设备、臭气监测设备、氮氧化物检测仪、碳排放监测设备、大气环境监测设备、空气微型站、粉尘检测仪
- 主营：颗粒料、磁线圈、混料机、包装设备、磁路设计、灌装机、锂电池、包装机、粉体线、拆包机、混合机、磁选机、搅拌均匀、智能产线、制浆系统、粉体工程、封闭输送、制备系统、负极材料、锂电材料、粉尘控制、自动配料、防爆浆料、电池材料、锂电浆料
- 主营：冷冻柜、路由器、管道摄、圆锯片、张力计、风速计、冷却塔、连轴器、维修台、弧焊机、升降机、电磁阀、缩空气、安全帽、燃烧器、安全带、数控铣、雕刻机、密封圈、钙化炉、电子秤、挤出机、混合机、泥浆泵、深度计
- 主营：粉尘检测仪、水质检测仪、气体检测仪、便携式明渠流量计、红外测油仪、大气采样器、水质采样器、液液萃取仪、林格曼黑度仪、油气回收检测仪、恒温恒湿称重系统、采样机器人、个人防护包、cod检测仪、便携式油烟检测仪
- 主营：滚筒夯、扫地车、破碎锤、短管置换设备、制氮机、污水处理设备、锚索切割机、破冰机、液压剪、等离子切割机、劈裂机、岩石锯、板换夹紧器、焊网机、顶管机、皮带取样机、生物质燃烧机、喷砂机、激光除锈机、装载机扫路车、马路吹风机、铣挖机、洗车机、截桩机、轨道运输车
- 主营：分解炉、气动阀、纯化装置、制氮机、氮气设备、持续产氮、纯化设备、氮气分析仪、防腐氮气机、氮气发生器、空气分离设备、行业制氮装置、吸附式制氮设备、氨分解制氢、露点分析仪、不锈钢炉胆、氢气退火炉、空气分离装置、微量氧分析仪
- 主营：[]