2-Aminophenol
2-Aminophenol Basic information
- Product Name:
- 2-Aminophenol
- Synonyms:
-
- 1-Amino-2-hydroxybenzene
- 1-Hydroxy-2-aminobenzene
- Dimethyl[2-
- 2-amino-pheno
- 2-Hydroxyanaline
- 2-Hydroxyaniline H
- 2-hydroxybenzenamine
- BASF Ursol 3GA
- CAS:
- 95-55-6
- MF:
- C6H7NO
- MW:
- 109.13
- EINECS:
- 202-431-1
- Product Categories:
-
- A
- A-BAlphabetic
- Alpha sort
- AM to AQChemical Class
- Amines
- Aromatics
- Intermediates of Dyes and Pigments
- Aromatic Phenols
- Phenoles and thiophenoles
- Organic Building Blocks
- Oxygen Compounds
- Phenols
- Pesticides&Metabolites
- dye intermediates
- Amine
- Mol File:
- 95-55-6.mol
2-Aminophenol Chemical Properties
- Melting point:
- 172 °C
- Boiling point:
- 164 °C (11.2515 mmHg)
- Density
- 1.328
- vapor pressure
- 14 hPa (153 °C)
- refractive index
- 1.5444 (estimate)
- Flash point:
- 168 °C
- storage temp.
- Store below +30°C.
- solubility
- 17 g/L (20°C)
- pka
- 4.78, 9.97(at 20℃)
- form
- Powder
- Colour Index
- 76520
- color
- White to brown
- PH
- 6.5-7.5 (10g/l, H2O, 20℃)
- PH Range
- 6.5 - 7.5 at 10 g/l at 20 °C
- Water Solubility
- 17 g/L (20 ºC)
- Merck
- 14,461
- BRN
- 606075
- Stability:
- Stable, but may be air or light sensitive. Incompatible with strong oxidizing agents.
- CAS DataBase Reference
- 95-55-6(CAS DataBase Reference)
- NIST Chemistry Reference
- Phenol, 2-amino-(95-55-6)
- EPA Substance Registry System
- o-Aminophenol (95-55-6)
Safety Information
- Hazard Codes
- Xn,C
- Risk Statements
- 20/22-68-34-20/21/22
- Safety Statements
- 28-36/37-28A-45-36/37/39-26-68-20/22
- RIDADR
- UN 2512 6.1/PG 3
- WGK Germany
- 2
- RTECS
- SJ4950000
- F
- 8-10-23
- Autoignition Temperature
- 190 °C
- TSCA
- Yes
- HazardClass
- 6.1
- PackingGroup
- III
- HS Code
- 29222900
- Hazardous Substances Data
- 95-55-6(Hazardous Substances Data)
- Toxicity
- LD50 orally in Rabbit: 1300 mg/kg
MSDS
- Language:English Provider:2-Aminophenol
- Language:English Provider:SigmaAldrich
- Language:English Provider:ACROS
- Language:English Provider:ALFA
2-Aminophenol Usage And Synthesis
Description
o-Aminophenol is contained in hair dyes and can cause contact dermatitis in hairdressers.
Chemical Properties
o-Aminophenol appears as colorless needles or as white crystalline substance turning tan to brown on exposure to air.
Chemical Properties
Colorless to light yellow liqui
Uses
2-Aminophenol is an isomer of 4-Aminophenol (A618920) and is used as a reagent for the synthesis of heterocyclic compounds and dyes.
Definition
ChEBI: The aminophenol which has the single amino substituent located ortho to the phenolic -OH group.
Synthesis Reference(s)
Synthetic Communications, 13, p. 495, 1983 DOI: 10.1080/00397918308081828
General Description
Off-white crystals or beige powder.
Air & Water Reactions
Protect from air and light. Insoluble in water.
Reactivity Profile
2-Aminophenol can react with oxidizing agents. THF forms explosive products with 2-aminophenol [Lewis 3227].
Fire Hazard
Combustible material: may burn but does not ignite readily. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Contact allergens
It is contained in hair dyes and can cause contact dermatitis in hairdressers and consumers
Safety Profile
Poison by intraperitoneal and subcutaneous routes. Moderately toxic by ingestion. An experimental teratogen. Other experimental reproductive effects. An eye irritant. Mutation data reported. When heated to decomposition it emits toxic NO,. See also AROMATIC AMINES.
Potential Exposure
Workers may be exposed to oAminophenol during its use as a chemical intermediate; in the manufacture of azo and sulfur dyes; and in the photographic industry. There is potential for consumer exposure to o-Aminophenol because of its use in dyeing hair, fur, and leather. The compound is a constituent of 75 registered cosmetic products suggesting the potential for widespread consumer exposure. p-Aminophenol is used mainly as a dye, dye intermediate and as a photographic developer; and in small quantities in analgesic drug preparation. Consumer exposure to p-aminophenol may occur from use as a hairdye or as a component in cosmetic preparations. mAminophenol is used mainly as a dye intermediate
Shipping
UN2512 Aminophenols (o-; m-; p-), Hazard Class: 6.1; Labels: 6.1-Poisonous materials
Purification Methods
Purify it by dissolving it in hot water, decolorising with activated charcoal, filtering and cooling to induce crystallisation. Maintain an atmosphere of N2 over the hot phenol solution to prevent its oxidation [Charles & Freiser J Am Chem Soc 74 1385 1952]. It can also be crystallised from EtOH using the same precautions. [Beilstein 13 IV 805.]
Incompatibilities
These phenol/cresol materials can react with oxidizers; reaction may be violent. Incompatible with strong reducing substances such as alkali metals, hydrides, nitrides, and sulfides. Flammable gas (H2) may be generated, and the heat of the reaction may cause the gas to ignite and explode. Heat may be generated by the acidbase reaction with bases; such heating may initiate polymerization of the organic compound. Reacts with boranes, alkalies, aliphatic amines, amides, nitric acid, sulfuric acid. Phenols are sulfonated very readily (e.g., by concentrated sulfuric acid at room temperature). These reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid and can explode when heated. Many phenols form metal salts that may be detonated by mild shock.
Waste Disposal
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
2-Aminophenol Preparation Products And Raw materials
Preparation Products
Raw materials
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