2-methoxyaniline
C7H9NO
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Identification
- CAS Number
- 90-04-0
- EC Number
- 201-963-1
- UN Number
- 2431
- Index Number
- 612-035-00-4
- PubChem CID
- 7000
Physical-chemical properties
- Molecular Formula
- C7H9NO
- Molar Mass
- 123.15 g/mol
- IUPAC Name
- 2-methoxyaniline
Chemical Identifiers
- InChI
- InChI=1S/C7H9NO/c1-9-7-5-3-2-4-6(7)8/h2-5H,8H2,1H3
- InChI Key
- VMPITZXILSNTON-UHFFFAOYSA-N
Overview
2-methoxyaniline (CAS 90-04-0) is an aromatic amine compound with methoxy substitution exhibiting significant toxicological properties requiring careful handling protocols. 2-methoxyaniline, also known by its EC number 201-963-1, represents a critical intermediate in organic synthesis with the molecular formula C7H9NO and molecular weight of 123.15 g/mol. This aromatic amine derivative features a methoxy group (-OCH3) attached to the benzene ring adjacent to the amino group, creating unique chemical properties that make it valuable in various industrial applications while requiring stringent safety measures. The compound belongs to the same chemical family as N-methylaniline, sharing similar aromatic amine characteristics but differing in substitution patterns that influence reactivity and toxicity profiles. Classification under ADR Class 6.1 reflects its toxic nature, with GHS08 and GHS06 pictograms indicating serious health hazards including carcinogenic (Category 1B) and mutagenic (Category 2) properties, alongside acute toxicity concerns across multiple exposure routes. Industrial applications of 2-methoxyaniline primarily include its use as an intermediate in pharmaceutical synthesis, where its aromatic amine structure serves as a building block for various drug compounds. The chemical also finds application in dye manufacturing, particularly in the production of azo dyes where the amino group facilitates diazotization reactions. Additionally, it serves as a precursor in the synthesis of specialty chemicals and agrochemical intermediates. The compound's hazard classification necessitates specialized handling procedures, appropriate personal protective equipment, and compliance with strict regulatory requirements for storage, transportation, and workplace exposure limits. Its classification as a Category 1B carcinogen requires particular attention to occupational health and safety protocols. OYSI maintains availability of 2-methoxyaniline for qualified industrial customers with appropriate handling capabilities and regulatory compliance.
Safety & Classification
Carc. 1B; Muta. 2; Acute Tox. 3 *; Acute Tox. 3 *; Acute Tox. 3 *
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:
Skin Contact
Measures if substance contacts the skin
First Aid Actions
- +P302IF ON SKIN:
- +P352Wash with plenty of water.
- +P361Take off immediately all contaminated clothing.
- +P313Get medical advice/attention.
Related hazard statements:
Ingestion
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 Number | 2431 |
| ADR Class | 6.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | 2-Anisidin |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2-methoxyaniline?
2-methoxyaniline is an organic aromatic amine compound with the molecular formula C7H9NO and CAS number 90-04-0. It consists of an aniline molecule with a methoxy group (-OCH3) attached to the ortho position of the benzene ring. With a molecular weight of 123.15 g/mol, this substance is classified as highly hazardous due to its carcinogenic and mutagenic properties, requiring careful handling in industrial applications.
What are the physicochemical properties of 2-methoxyaniline?
2-methoxyaniline is typically a liquid or crystalline solid at room temperature with characteristic aromatic amine properties. As an aromatic compound containing both amino and methoxy functional groups, it exhibits moderate polarity and solubility characteristics typical of substituted anilines. The compound's physicochemical behavior is influenced by the electron-donating effects of both the amino and methoxy substituents on the benzene ring.
What is 2-methoxyaniline used for?
2-methoxyaniline serves primarily as an intermediate in organic synthesis and chemical manufacturing processes. It is commonly used in the production of dyes, pharmaceuticals, and other specialty chemicals where aromatic amine intermediates are required. The compound's unique substitution pattern makes it valuable for synthesizing compounds requiring specific electronic and steric properties, particularly in the development of colorants and pharmaceutical active ingredients.
How to handle 2-methoxyaniline safely?
2-methoxyaniline requires extreme caution during handling due to its carcinogenic (Carc. 1B) and mutagenic (Muta. 2) classification. Personnel must wear appropriate personal protective equipment including chemical-resistant gloves, protective clothing, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Skin and eye contact must be strictly avoided, and emergency procedures should be readily available.
How to store 2-methoxyaniline correctly?
2-methoxyaniline must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Storage areas should be designed to prevent exposure to personnel and equipped with appropriate containment measures. The substance should be kept away from oxidizing agents and strong acids. Access should be restricted to authorized personnel only, with proper labeling indicating the serious health hazards.
What to do in case of contact with 2-methoxyaniline?
2-methoxyaniline exposure requires immediate emergency response due to its high toxicity. In case of skin contact, immediately remove contaminated clothing and flush affected areas with large amounts of water for at least 15 minutes. For eye contact, rinse continuously with water and seek immediate medical attention. If inhaled, move the person to fresh air immediately. Seek medical attention promptly for any exposure, providing safety data sheet information to medical personnel.
How to dispose of 2-methoxyaniline appropriately?
2-methoxyaniline disposal must comply with hazardous waste regulations due to its carcinogenic and toxic properties. The substance cannot be disposed of in regular waste streams and requires specialized hazardous waste treatment by licensed facilities. Waste must be properly classified, packaged, and labeled according to local and European waste regulations. Incineration at appropriate high-temperature facilities is typically the preferred disposal method for this type of hazardous organic compound.
How to transport 2-methoxyaniline?
2-methoxyaniline is classified under ADR as Class 6.1 (toxic substances), Packing Group III, requiring compliance with dangerous goods transport regulations. Packaging must meet UN specification requirements and be properly labeled with appropriate hazard labels and markings. Transport vehicles must carry emergency response information and appropriate safety equipment. Drivers require ADR training certification, and transport documentation must accompany shipments throughout the journey.
Is 2-methoxyaniline subject to particular regulations?
2-methoxyaniline is subject to strict regulatory oversight under European chemical legislation including REACH and CLP regulations. As a carcinogenic and mutagenic substance, it requires comprehensive risk assessments and safety measures for professional use. The compound may be subject to authorization requirements or restrictions under REACH Annex XVII. Users must comply with occupational exposure limits and implement appropriate risk management measures as specified in safety data sheets.
Where to buy 2-methoxyaniline in Europe?
2-methoxyaniline is available through OYSI, a European distributor specializing in technical chemical products. As a regulated hazardous substance, procurement requires compliance with legal requirements including proper justification for use and implementation of appropriate safety measures. OYSI provides technical support and regulatory guidance to ensure customers meet all applicable requirements for handling this high-hazard chemical. Professional users can contact OYSI for availability and technical specifications.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.