1-methoxy-2-nitrobenzene

C7H7NO3

CAS91-23-6
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
Danger

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Identification

CAS Number
91-23-6
EC Number
202-052-1
UN Number
2730
Index Number
609-047-00-7
PubChem CID
7048

Physical-chemical properties

Molecular Formula
C7H7NO3
Molar Mass
153.14 g/mol
IUPAC Name
1-methoxy-2-nitrobenzene

Chemical Identifiers

InChI
InChI=1S/C7H7NO3/c1-11-7-5-3-2-4-6(7)8(9)10/h2-5H,1H3
InChI Key
CFBYEGUGFPZCNF-UHFFFAOYSA-N

Overview

1-methoxy-2-nitrobenzene (CAS 91-23-6) is an aromatic nitro compound with methoxy substitution used primarily as a chemical intermediate in organic synthesis. This organic compound, also known by its IUPAC designation 1-methoxy-2-nitrobenzene, represents a significant chemical intermediate in the production of various industrial and pharmaceutical compounds. With the molecular formula C7H7NO3 and a molecular weight of 153.14 g/mol, this nitro-methoxy benzene derivative exhibits the characteristic properties of both electron-donating methoxy and electron-withdrawing nitro functional groups on an aromatic ring system. The compound is classified under serious safety considerations, carrying a Carc. 1B classification indicating suspected carcinogenic properties, along with Acute Tox. 4 designation. These hazard classifications necessitate proper handling protocols under controlled industrial environments, with appropriate personal protective equipment and ventilation systems. The substance falls under ADR Class 6.1 for transportation, reflecting its toxic nature and requiring specialized logistics management. In industrial applications, 1-methoxy-2-nitrobenzene serves primarily as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals. The compound is particularly valuable in the production of ortho-substituted aniline derivatives through reduction processes. It also finds application in the manufacture of specialized organic compounds where selective nitro-methoxy substitution patterns are required. Similar to other aromatic intermediates like 4-[(4-aminophenyl)methyl]aniline, it plays a crucial role in multi-step synthetic pathways for complex molecular architectures. OYSI maintains reliable supply chains for 1-methoxy-2-nitrobenzene, ensuring consistent availability for European industrial customers requiring this specialized chemical intermediate for their manufacturing processes.

Safety & Classification

Danger
Classification:

Carc. 1B; Acute Tox. 4 *

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H350

May cause cancer.

H302

Harmful if swallowed.

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

Ingestion

Harmful

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call 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 Number2730
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping Name2-Nitroanisol, flüssig
Marine PollutantNo

Frequently Asked Questions

What is 1-methoxy-2-nitrobenzene?

1-methoxy-2-nitrobenzene is an aromatic organic compound with the molecular formula C7H7NO3 and CAS number 91-23-6. This substance features a benzene ring substituted with both a methoxy group (-OCH3) and a nitro group (-NO2) in ortho positions. With a molecular weight of 153.14 g/mol, it is classified as a Category 1B carcinogen and acute toxicant, requiring careful handling due to its significant health hazards.

What are the physicochemical properties of 1-methoxy-2-nitrobenzene?

1-methoxy-2-nitrobenzene is typically a yellow to orange crystalline solid or liquid at room temperature. As an aromatic nitro compound, it exhibits limited water solubility but dissolves well in organic solvents such as ethanol, acetone, and benzene. The substance has a characteristic aromatic odor and is sensitive to light and heat, which can cause decomposition or color changes over time.

What is 1-methoxy-2-nitrobenzene used for?

1-methoxy-2-nitrobenzene serves primarily as an intermediate in organic synthesis and pharmaceutical manufacturing. It is commonly used in the production of dyes, pigments, and various chemical intermediates. The compound also finds applications in research laboratories for synthetic chemistry work and as a precursor for the synthesis of other aromatic compounds, particularly in the development of specialty chemicals and pharmaceutical active ingredients.

How to handle 1-methoxy-2-nitrobenzene safely?

1-methoxy-2-nitrobenzene requires strict safety protocols due to its carcinogenic properties and acute toxicity. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and respiratory protection. Work must be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid skin contact and ingestion completely, and implement proper decontamination procedures. Regular health monitoring is recommended for workers with potential exposure.

How to store 1-methoxy-2-nitrobenzene correctly?

1-methoxy-2-nitrobenzene must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep away from strong oxidizing agents, reducing agents, and incompatible materials. Storage areas should be equipped with appropriate spill containment measures and restricted access due to the substance's carcinogenic classification. Maintain temperatures below 25°C and ensure containers are properly labeled with hazard warnings.

What to do in case of contact with 1-methoxy-2-nitrobenzene?

Immediate action is critical following exposure to 1-methoxy-2-nitrobenzene. For skin contact, remove contaminated clothing and wash thoroughly with soap and water for at least 15 minutes. If inhaled, move to fresh air immediately and seek medical attention. In case of eye contact, flush with clean water for 15 minutes while holding eyelids open. For ingestion, do not induce vomiting and seek immediate medical care. Always consult a physician after any exposure incident.

How to dispose of 1-methoxy-2-nitrobenzene appropriately?

1-methoxy-2-nitrobenzene disposal must comply with local and European waste regulations as hazardous waste. The substance cannot be disposed of through regular waste streams due to its carcinogenic classification. Contact licensed hazardous waste disposal companies for proper collection and treatment. Incineration at high temperatures in specialized facilities is typically required. Never discharge into sewers, waterways, or soil. Maintain detailed disposal records as required by environmental regulations.

How to transport 1-methoxy-2-nitrobenzene?

1-methoxy-2-nitrobenzene is classified under ADR as Class 6.1 (Toxic substances), Packing Group III for transportation purposes. Proper shipping requires UN-approved packaging and hazardous materials documentation. Vehicles must display appropriate hazard placards and carry emergency response information. Transport personnel need ADR training certification. Shipments must include safety data sheets and emergency contact information. Ensure compliance with international dangerous goods regulations for cross-border movements.

Is 1-methoxy-2-nitrobenzene subject to specific regulations?

1-methoxy-2-nitrobenzene is subject to comprehensive European chemical regulations including REACH registration requirements and CLP classification as Carcinogenic Category 1B and Acute Toxic Category 4. The substance requires safety data sheets and proper hazard labeling with GHS08 and GHS07 pictograms. Workplace exposure limits and health surveillance programs may apply. Users must implement risk management measures and report downstream use to ensure regulatory compliance throughout the supply chain.

Where to buy 1-methoxy-2-nitrobenzene in Europe?

1-methoxy-2-nitrobenzene is available through OYSI, a specialized European distributor of technical chemicals. As a regulated substance requiring careful handling and documentation, procurement should only be through established chemical suppliers with proper regulatory compliance. OYSI provides the necessary safety data sheets, transport documentation, and regulatory support for European customers. Contact OYSI directly for availability, technical specifications, and regulatory guidance for your specific application requirements.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.