Neon
Ne
neon
Consulting for Neon
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Identification
- CAS Number
- 7440-01-9
- EC Number
- 231-110-9
- UN Number
- 1913
- PubChem CID
- 23935
Physical-chemical properties
- Molecular Formula
- Ne
- Molar Mass
- 20.18 g/mol
- IUPAC Name
- neon
Chemical Identifiers
- InChI
- InChI=1S/Ne
- InChI Key
- GKAOGPIIYCISHV-UHFFFAOYSA-N
Overview
Neon (CAS 7440-01-9) is a noble gas element with exceptional chemical inertness and distinctive orange-red emission properties when electrically excited. As the second-lightest noble gas in the periodic table, neon represents a fundamental element widely recognized for its stability and unique luminescent characteristics. This colorless, odorless, and tasteless gas occurs naturally in Earth's atmosphere at approximately 18 parts per million, making it relatively rare compared to other atmospheric components. Neon's atomic structure, featuring a complete outer electron shell, renders it chemically inert under normal conditions, distinguishing it from reactive gases like nitrous oxide which readily participates in chemical reactions. The element exhibits remarkable physical properties that drive its commercial value. With a molecular weight of 20.18 g/mol, neon remains gaseous at extremely low temperatures, liquefying only at -246°C under atmospheric pressure. Its electrical discharge properties produce the characteristic brilliant orange-red glow that has made neon synonymous with illuminated signage worldwide. Unlike reactive halogen compounds such as bromane, neon maintains its stability across diverse environmental conditions. Primary industrial applications include specialized lighting systems, where neon's emission spectrum creates distinctive visual displays for advertising and architectural purposes. The gas also serves as a cryogenic refrigerant in high-energy physics applications, particularly in particle accelerators and research facilities requiring ultra-low temperature environments. Additionally, neon functions as an inert atmosphere component in specialized welding and manufacturing processes where chemical reactivity must be eliminated. From a safety perspective, neon presents minimal hazards as an inert gas, though standard precautions for handling compressed gases apply, including proper ventilation and pressure management protocols. OYSI maintains reliable supplies of high-purity neon to support diverse European industrial applications requiring this specialized noble gas.
Safety & Classification
No Hazard Classification
This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.
Transport (ADR)
| UN Number | 1913 |
| ADR Class | 2 |
| Packing Group | |
| Tunnel Code | C/E |
| Proper Shipping Name | Neon, tiefgekühlt, flüssig |
| Marine Pollutant | No |
Frequently Asked Questions
What is neon?
Neon is a noble gas with the chemical symbol Ne and CAS number 7440-01-9. It is the second-lightest noble gas, located in Group 18 of the periodic table with a molecular weight of 20.18 g/mol. Neon is chemically inert under normal conditions, making it extremely stable and non-reactive. As an element, it occurs naturally in the atmosphere in trace amounts and is commercially obtained through fractional distillation of liquid air.
What are the physicochemical properties of neon?
Neon is a colorless, odorless, and tasteless gas under standard conditions. It has a boiling point of -246°C and a melting point of -249°C, making it one of the most volatile elements. Neon is monatomic, meaning it exists as single atoms rather than molecules. It has extremely low solubility in water and is lighter than air. The gas exhibits no chemical reactivity under normal conditions due to its complete electron shell configuration.
What is neon used for?
Neon is primarily used in lighting applications, particularly in neon signs and advertising displays where it produces a distinctive orange-red glow when electrically excited. It serves as a cryogenic refrigerant in specialized applications due to its extremely low boiling point. Neon is also used in high-voltage indicators, lightning arrestors, television tubes, and as an inert atmosphere for certain welding processes. Additionally, it finds application in gas-filled electron tubes and plasma research.
How to handle neon safely?
Neon requires minimal safety precautions due to its non-toxic and chemically inert nature. Standard personal protective equipment includes safety glasses and appropriate clothing when handling pressurized containers. Ensure adequate ventilation to prevent oxygen displacement in enclosed spaces. Use proper lifting techniques when moving heavy gas cylinders and secure containers to prevent falling. Always follow standard compressed gas handling procedures, including proper valve operation and pressure regulation equipment.
How to store neon correctly?
Neon should be stored in properly labeled, undamaged pressure vessels in a well-ventilated, dry area away from heat sources and direct sunlight. Storage areas must be secured and accessible only to authorized personnel. Cylinders should be stored upright, properly secured to prevent tipping, and protected from physical damage. Maintain storage temperatures within manufacturer specifications and ensure adequate spacing between containers. Regular inspection of storage containers and safety equipment is essential.
What to do in case of contact with neon?
Neon poses minimal health risks due to its inert nature, but exposure to large quantities can cause asphyxiation through oxygen displacement. If someone experiences difficulty breathing in areas with potential neon leaks, immediately move them to fresh air and seek medical attention if symptoms persist. In case of skin contact with extremely cold liquid neon, treat as a cryogenic burn with appropriate first aid measures. Ensure proper ventilation and evacuate areas with significant gas leaks.
How to dispose of neon appropriately?
Neon disposal should follow local and national regulations for compressed gases and pressure vessels. Empty cylinders can typically be returned to suppliers for refilling or proper recycling. Residual gas should be safely vented in well-ventilated areas, following proper degassing procedures. Contact certified waste management companies for guidance on container disposal. Never puncture or damage pressure vessels during disposal, and always verify complete degassing before container disposal or recycling.
How to transport neon?
Neon is classified under ADR Class 2 as a compressed gas for transportation purposes. It must be transported in approved pressure vessels that meet relevant standards and regulations. Vehicles must display appropriate hazard placards and carry required documentation. Drivers need proper training and certification for compressed gas transport. Ensure cylinders are properly secured during transit, protected from extreme temperatures, and handled according to dangerous goods transportation regulations throughout the European Union.
Is neon subject to specific regulations?
Neon is subject to standard industrial gas regulations under REACH registration requirements and CLP classification systems. It does not appear on the SVHC (Substances of Very High Concern) candidate list due to its inert nature. Transportation is regulated under ADR/RID dangerous goods regulations as a Class 2 compressed gas. Workplace exposure limits and industrial safety standards apply when handling pressurized containers. Local regulations may impose additional requirements for storage and handling.
Where to buy neon in Europe?
Neon is available through OYSI, a European distributor of chemical products specializing in industrial gases and specialty chemicals. OYSI provides reliable sourcing and distribution across European markets with proper documentation and regulatory compliance. When purchasing neon, ensure suppliers provide appropriate technical data sheets, safety documentation, and comply with relevant European regulations. Consider factors such as purity requirements, container sizes, and delivery logistics when selecting suppliers for your specific applications.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.