2-nitronaphthalene
C10H7NO2
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Identification
- CAS Number
- 581-89-5
- EC Number
- 209-474-5
- UN Number
- 2538
- Index Number
- 609-038-00-8
- PubChem CID
- 11392
Physical-chemical properties
- Molecular Formula
- C10H7NO2
- Molar Mass
- 173.17 g/mol
- IUPAC Name
- 2-nitronaphthalene
Chemical Identifiers
- InChI
- InChI=1S/C10H7NO2/c12-11(13)10-6-5-8-3-1-2-4-9(8)7-10/h1-7H
- InChI Key
- ZJYJZEAJZXVAMF-UHFFFAOYSA-N
Overview
2-nitronaphthalene (CAS 581-89-5) is an aromatic nitro compound featuring a naphthalene ring system with enhanced reactivity due to nitro group substitution. This yellow crystalline organic compound represents an important intermediate in the synthesis of various aromatic chemicals and dyes. With the molecular formula C10H7NO2 and a molecular weight of 173.17 g/mol, 2-nitronaphthalene belongs to the family of nitroaromatic compounds that exhibit distinctive chemical properties due to the electron-withdrawing nature of the nitro group attached to the naphthalene backbone. The compound requires careful handling due to its classification as a Category 1B carcinogen under the GHS system, carrying the danger signal word and requiring appropriate safety measures including personal protective equipment and controlled ventilation systems. Its aquatic chronic toxicity classification also necessitates proper environmental protection protocols during storage, handling, and disposal. As a Class 4.1 substance under ADR regulations, it falls under the flammable solids category, requiring specific transport and storage conditions. In industrial applications, 2-nitronaphthalene serves primarily as a chemical intermediate in the production of anthraquinone dyes, pharmaceutical compounds, and specialty chemicals. It also finds use in the synthesis of naphthalene derivatives and as a precursor for various organic transformations. Unlike related compounds such as 1-nitro-4-phenylbenzene, which has different substitution patterns, 2-nitronaphthalene offers specific reactivity advantages in certain synthetic pathways. The compound shares structural similarities with other nitroaromatic systems but maintains unique properties that make it valuable for specialized industrial processes. OYSI maintains reliable supply chains for 2-nitronaphthalene to support European chemical manufacturers requiring this essential intermediate.
Safety & Classification
Carc. 1B; Aquatic Chronic 2
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
Transport (ADR)
| UN Number | 2538 |
| ADR Class | 4.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | 2-Nitronaphthalen |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-nitronaphthalene?
2-nitronaphthalene is an organic aromatic compound with the molecular formula C10H7NO2 and CAS number 581-89-5. It consists of a naphthalene ring system with a nitro group (-NO2) attached at the 2-position. With a molecular weight of 173.17 g/mol, this compound is classified as a Category 1B carcinogen and poses chronic aquatic toxicity risks. It appears as a crystalline solid and is primarily used as an intermediate in chemical synthesis processes.
What are the physicochemical properties of 2-nitronaphthalene?
2-nitronaphthalene is a yellow crystalline solid at room temperature with a characteristic aromatic odor. It has limited water solubility but dissolves well in organic solvents such as ethanol, acetone, and benzene. The compound has a melting point around 79°C and exhibits typical nitroaromatic compound properties. Its aromatic structure makes it relatively stable under normal conditions, though it can undergo various chemical reactions typical of nitro compounds and aromatic systems.
What is 2-nitronaphthalene used for?
2-nitronaphthalene is primarily used as a chemical intermediate in the synthesis of dyes, pigments, and pharmaceuticals. It serves as a precursor for manufacturing various aromatic compounds through reduction, substitution, or coupling reactions. The compound finds applications in the production of specialized organic chemicals and research applications. Due to its carcinogenic classification, its use is restricted to industrial and professional settings with appropriate safety controls and regulatory compliance.
How to handle 2-nitronaphthalene safely?
2-nitronaphthalene requires strict safety measures due to its carcinogenic properties. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection in well-ventilated areas or fume hoods. Avoid skin contact, inhalation, and ingestion completely. Work in designated areas with proper containment systems. Ensure emergency eyewash and shower facilities are readily available. Follow established protocols for carcinogenic substances and maintain detailed exposure records.
How to store 2-nitronaphthalene correctly?
2-nitronaphthalene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, ignition sources, and incompatible materials. Keep containers in secondary containment and label clearly with appropriate hazard warnings. Store separately from strong oxidizing agents, reducing agents, and bases. Maintain storage temperature below 25°C and protect from light. Access should be restricted to authorized personnel only, with proper inventory tracking due to its carcinogenic classification.
What to do in case of contact with 2-nitronaphthalene?
2-nitronaphthalene contact requires immediate action due to its carcinogenic nature. For skin contact, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If inhaled, move to fresh air immediately and seek medical attention. For eye contact, flush with clean water for at least 15 minutes. Never induce vomiting if ingested. Seek immediate medical attention in all cases and inform medical personnel about the carcinogenic properties of the substance.
How to dispose of 2-nitronaphthalene appropriately?
2-nitronaphthalene disposal must comply with local and national hazardous waste regulations due to its carcinogenic and environmental hazard classification. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Never discharge into sewers, waterways, or soil. Contaminated materials, containers, and PPE must be treated as hazardous waste. Maintain detailed disposal records and follow chain-of-custody procedures. Incineration at approved high-temperature facilities is typically the preferred disposal method for this substance.
How to transport 2-nitronaphthalene?
2-nitronaphthalene is classified under ADR as Class 4.1 (flammable solids), Packing Group III. Transportation requires appropriate hazardous goods packaging, labeling, and documentation according to dangerous goods regulations. Use UN-approved packaging and display proper hazard labels and placards. Transport vehicles must carry appropriate emergency equipment and documentation. Only trained personnel should handle the transportation process. Ensure compliance with route restrictions and notification requirements for carcinogenic substances where applicable.
Is 2-nitronaphthalene subject to specific regulations?
2-nitronaphthalene is subject to strict regulations under REACH, CLP, and occupational health legislation due to its Category 1B carcinogenic classification. It requires safety data sheets, exposure assessments, and risk management measures. Workplace exposure limits apply, and health surveillance of exposed workers may be mandatory. The compound is regulated under dangerous goods transportation rules and environmental protection legislation. Users must comply with authorization procedures, restriction measures, and reporting requirements for carcinogenic substances in their jurisdiction.
Where to buy 2-nitronaphthalene in Europe?
2-nitronaphthalene is available through OYSI, a specialized European distributor of technical chemicals. As a professional chemical supplier, OYSI provides this regulated substance to qualified industrial and research customers with proper documentation and safety data sheets. Due to its carcinogenic classification, purchase is restricted to professional users who can demonstrate appropriate handling capabilities, safety measures, and regulatory compliance. Contact OYSI directly to discuss specific requirements, quantities, and delivery options for your application.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.