2-aminophenol

C6H7NO

CAS95-55-6
GHS08 Gefahrensymbol: Gesundheitsgefahr – Gesundheitsgefahr
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
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Identification

CAS Number
95-55-6
EC Number
202-431-1
UN Number
2512
Index Number
612-033-00-3
PubChem CID
5801

Physical-chemical properties

Molecular Formula
C6H7NO
Molar Mass
109.13 g/mol
IUPAC Name
2-aminophenol

Chemical Identifiers

InChI
InChI=1S/C6H7NO/c7-5-3-1-2-4-6(5)8/h1-4,8H,7H2
InChI Key
CDAWCLOXVUBKRW-UHFFFAOYSA-N

Overview

2-aminophenol (CAS 95-55-6) is an aromatic amine compound with both amino and hydroxyl functional groups that exhibits mutagenic properties and moderate acute toxicity. This organic chemical compound, also known by its IUPAC name 2-aminophenol, represents an important intermediate in various industrial chemical processes. With the molecular formula C6H7NO and a molecular weight of 109.13 g/mol, this crystalline substance combines the structural features of both aniline and phenol, making it a versatile building block in synthetic chemistry. The compound's dual functionality, featuring both an amino group (-NH2) and a hydroxyl group (-OH) positioned ortho to each other on a benzene ring, enables diverse chemical reactions and applications. From a safety perspective, 2-aminophenol is classified under multiple hazard categories, including Mutagenicity Category 2 and Acute Toxicity Category 4, requiring careful handling protocols. The compound displays GHS08 and GHS07 pictograms with a "Warning" signal word, and is classified under ADR Class 6.1 for transportation purposes. These classifications necessitate appropriate personal protective equipment and controlled storage conditions in industrial settings. The compound finds primary application in the pharmaceutical industry as an intermediate for drug synthesis, particularly in the production of analgesics and antipyretics. It also serves as a crucial component in dye manufacturing, where its chemical structure allows for the creation of various colorants. Additionally, 2-aminophenol functions as a developer in photographic chemicals and as an intermediate in the synthesis of other aromatic compounds. Like related compounds such as 4-aminophenol, it plays a significant role in the production of specialty chemicals. OYSI provides high-quality 2-aminophenol to meet diverse industrial requirements across European markets.

Safety & Classification

Warning
Classification:

Muta. 2; Acute Tox. 4 *; Acute Tox. 4 *

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H341

Suspected of causing genetic defects.

H332

Harmful if inhaled.

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

Inhalation

Harmful

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:

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 Number2512
ADR Class6.1
Packing GroupIII
Tunnel CodeE
Proper Shipping Name2-Aminophenol, fest
Marine PollutantNo

Frequently Asked Questions

What is 2-aminophenol?

2-aminophenol is an organic compound with the molecular formula C6H7NO and CAS number 95-55-6. It belongs to the aminophenol family, featuring both amino (-NH2) and hydroxyl (-OH) groups attached to a benzene ring. With a molecular weight of 109.13 g/mol, this chemical is classified as a mutagenic substance (Category 2) and acutely toxic (Category 4), requiring careful handling in industrial applications.

What are the physicochemical properties of 2-aminophenol?

2-aminophenol typically appears as crystalline solid ranging from white to light brown in color. It exhibits moderate water solubility and is soluble in alcohols and other organic solvents. The compound has a characteristic phenolic odor and tends to darken upon exposure to air and light due to oxidation. Its melting point and other thermal properties make it suitable for various chemical synthesis processes.

What is 2-aminophenol used for?

2-aminophenol serves primarily as an intermediate in pharmaceutical synthesis and dye manufacturing. It is commonly used in the production of hair dyes, photographic developers, and various organic compounds. The chemical also finds application in the synthesis of benzoxazoles and other heterocyclic compounds. Additionally, it serves as a precursor for certain pharmaceutical compounds and analytical reagents in laboratory settings.

How to handle 2-aminophenol safely?

2-aminophenol requires careful handling due to its mutagenic and acute toxicity properties. Workers must wear appropriate personal protective equipment including nitrile gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods. Avoid skin contact, inhalation, and ingestion. The substance carries GHS08 and GHS07 pictograms with a 'Warning' signal word, indicating moderate hazard levels.

How to store 2-aminophenol correctly?

2-aminophenol should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and heat sources. The storage area must be protected from moisture and incompatible materials such as strong oxidizing agents. Containers should be made of compatible materials and properly labeled according to CLP regulations. Regular inspection for container integrity and proper segregation from incompatible chemicals is essential.

What to do in case of contact with 2-aminophenol?

2-aminophenol exposure requires immediate action. For skin contact, remove contaminated clothing and wash affected areas thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15 minutes while holding eyelids open. If inhaled, move the person to fresh air and seek medical attention. For ingestion, do not induce vomiting and seek immediate medical care.

How to dispose of 2-aminophenol appropriately?

2-aminophenol disposal must comply with local and European waste regulations due to its hazardous classification. The substance cannot be disposed of in regular waste streams and requires treatment by authorized hazardous waste disposal companies. Small laboratory quantities may be collected in appropriate waste containers for chemical disposal. Incineration at high temperatures in specialized facilities is typically the preferred disposal method for this compound.

How to transport 2-aminophenol?

2-aminophenol is classified under ADR Class 6.1 (toxic substances) Packing Group III, indicating moderate danger during transport. It must be packaged in UN-approved containers with proper labeling and documentation. Transport vehicles require appropriate placarding and trained drivers with ADR certification. The substance must be segregated from incompatible materials and protected from damage during transit according to dangerous goods transportation regulations.

Is 2-aminophenol subject to specific regulations?

2-aminophenol is regulated under various European frameworks including REACH and CLP regulations due to its hazardous properties. While not currently listed as a SVHC (Substance of Very High Concern), its mutagenic classification (Muta. 2) subjects it to strict handling and reporting requirements. Companies using this substance must comply with worker safety regulations, environmental protection measures, and appropriate risk assessment procedures under occupational health legislation.

Where to buy 2-aminophenol in Europe?

2-aminophenol is available through OYSI, a specialized European distributor of technical chemicals. As an established chemical supplier, OYSI provides this compound to industrial customers across Europe with proper documentation and regulatory compliance. The company ensures appropriate packaging, labeling, and transportation according to ADR requirements. Contact OYSI directly for availability, technical specifications, and delivery options to your specific European location.

Data Sources

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