Nitrous oxide
N2O
nitrous oxide
Consulting for Nitrous oxide
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Identification
- CAS Number
- 10024-97-2
- EC Number
- 233-032-0
- UN Number
- 1070
- Index Number
- 007-031-00-9
- PubChem CID
- 948
Physical-chemical properties
- Molecular Formula
- N2O
- Molar Mass
- 44.01 g/mol
- IUPAC Name
- nitrous oxide
Chemical Identifiers
- InChI
- InChI=1S/N2O/c1-2-3
- InChI Key
- GQPLMRYTRLFLPF-UHFFFAOYSA-N
Overview
Nitrous oxide (CAS 10024-97-2) is a colorless inorganic gas with anesthetic and oxidizing properties commonly used in medical and industrial applications. This nitrogen oxide compound, with the molecular formula N2O and a molecular weight of 44.013 g/mol, plays a significant role across multiple industrial sectors. Also known as dinitrogen monoxide, nitrous oxide is a stable gas under normal conditions but becomes a powerful oxidizing agent at elevated temperatures. The substance is classified under ADR Class 2 as a compressed gas and carries serious safety considerations due to its reproductive toxicity, specific target organ toxicity, and ozone depletion potential. From a safety perspective, nitrous oxide presents multiple hazard classifications including reproductive toxicity category 1B, specific target organ toxicity for single exposure category 3, and repeated exposure category 1. The substance also contributes to ozone layer depletion, earning an Ozone category 1 classification. These properties require careful handling protocols and appropriate safety measures during storage, transport, and application. The GHS08 and GHS07 pictograms indicate both health hazards and less severe acute toxicity risks. Industrial applications of nitrous oxide span several sectors, with primary uses in semiconductor manufacturing as an oxidizing agent, in the food industry as a propellant and whipping agent, and in medical applications as an anesthetic gas. Unlike more volatile compounds such as buta-1,3-diene, nitrous oxide offers controlled reactivity that makes it valuable for precision industrial processes. OYSI provides nitrous oxide to European industrial customers, ensuring compliance with all relevant safety regulations and transportation requirements for this specialized chemical compound.
Safety & Classification
Repr. 1B; STOT SE 3; STOT RE 1; Ozone 1
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Inhalation
Measures if vapours or dust are inhaled
First Aid Actions
- +P304IF INHALED:
- +P340Remove person to fresh air and keep comfortable for breathing.
- +P311Call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 1070 |
| ADR Class | 2 |
| Packing Group | |
| Tunnel Code | C/E |
| Proper Shipping Name | Distickstoffmonoxid, unter Druck verflüssigt |
| Marine Pollutant | No |
Frequently Asked Questions
What is nitrous oxide?
Nitrous oxide is a colorless chemical compound with the molecular formula N2O, commonly known as laughing gas. This inorganic gas has a molecular weight of 44.013 g/mol and exists naturally in the atmosphere. It is classified as a hazardous substance with reproductive toxicity, specific target organ toxicity, and ozone depletion properties. Nitrous oxide is widely recognized for its anesthetic and analgesic properties, making it valuable in medical applications.
What are the physicochemical properties of nitrous oxide?
Nitrous oxide is a colorless gas at room temperature with a slightly sweet odor and metallic taste. It has a boiling point of -88.48°C and is moderately soluble in water. The gas is non-flammable but supports combustion by releasing oxygen when heated. It is heavier than air with a density of approximately 1.98 g/L at standard conditions. Nitrous oxide is stable under normal conditions but decomposes at high temperatures above 500°C.
What is nitrous oxide used for?
Nitrous oxide serves multiple industrial and medical purposes. In healthcare, it functions as an anesthetic and analgesic agent during dental procedures and minor surgeries. The food industry uses it as a propellant in whipped cream dispensers and as a preservative. Industrial applications include semiconductor manufacturing, where it serves as an oxidizing agent, and automotive racing as a performance enhancer. It also finds use in chemical synthesis and analytical chemistry applications.
How to handle nitrous oxide safely?
Nitrous oxide requires careful handling due to its classification as a dangerous substance with reproductive toxicity and organ toxicity risks. Workers must wear appropriate personal protective equipment including respiratory protection in enclosed spaces. Ensure adequate ventilation to prevent accumulation and oxygen displacement. Avoid exposure during pregnancy due to reproductive hazards. Handle cylinders with care, avoid dropping, and never use oil or grease on fittings. Regular health monitoring is recommended for occupational exposure.
How to store nitrous oxide correctly?
Nitrous oxide should be stored in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Cylinders must be secured upright and protected from physical damage. Storage areas should be clearly marked and restricted to authorized personnel only. Maintain temperatures below 52°C to prevent dangerous pressure buildup. Separate from flammable materials and oxidizing agents. Implement proper inventory rotation using first-in, first-out principles to ensure product quality.
What to do in case of contact with nitrous oxide?
Nitrous oxide exposure requires immediate medical attention, especially in cases of inhalation. Remove the affected person to fresh air immediately and provide oxygen if breathing is difficult. For skin or eye contact, flush with clean water for at least 15 minutes. If unconsciousness occurs, place the person in recovery position and ensure airway clearance. Seek immediate medical care for any exposure, as nitrous oxide can cause oxygen displacement and specific target organ effects.
How to dispose of nitrous oxide properly?
Nitrous oxide disposal must comply with local and European waste regulations due to its environmental impact on ozone depletion. Empty cylinders should be returned to suppliers for proper reconditioning. Never release gas directly to atmosphere due to its ozone-depleting properties and greenhouse gas effects. Contact licensed waste disposal companies for proper handling of contaminated equipment or residual gas. Maintain documentation of all disposal activities for regulatory compliance and traceability purposes.
How to transport nitrous oxide?
Nitrous oxide is classified as Class 2 dangerous goods under ADR regulations for road transport. Cylinders must be properly secured, labeled, and transported by trained personnel with appropriate documentation. Vehicles require proper ventilation and emergency equipment. Transport documents must include proper shipping names, hazard classes, and emergency contact information. Drivers need ADR certification for transporting dangerous goods. Ensure cylinders are protected from temperature extremes and physical damage during transit.
Is nitrous oxide subject to specific regulations?
Nitrous oxide is subject to comprehensive European regulations including CLP classification as Repr. 1B, STOT SE 3, STOT RE 1, and Ozone 1. Under REACH regulation, it requires safety data sheets and exposure assessments for professional use. The substance faces restrictions under the Montreal Protocol due to ozone depletion potential. Medical use requires pharmaceutical licensing, while industrial applications need workplace exposure monitoring. Environmental regulations limit emissions due to greenhouse gas properties.
Where to buy nitrous oxide in Europe?
Nitrous oxide is available through OYSI, a European distributor of technical chemicals serving industrial and professional customers. OYSI provides properly classified and documented nitrous oxide meeting European safety and quality standards. As a specialized chemical distributor, OYSI ensures compliance with CLP labeling, ADR transport requirements, and REACH obligations. Contact OYSI directly for availability, technical specifications, and delivery options tailored to your specific application requirements across European markets.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.