3-Aminophenol

Last updated
3-Aminophenol [1]
M-Aminophenol.svg
3-Aminophenol-3D-spacefill.png
Names
Preferred IUPAC name
3-Aminophenol [2]
Other names
m-Aminophenol
meta-Aminophenol
3-Hydroxyaniline
m-Hydroxyaniline
meta-Hydroxyaniline
Identifiers
3D model (JSmol)
636059
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.008.830 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 209-711-2
2913
KEGG
PubChem CID
RTECS number
  • SJ4900000
UNII
UN number 2512
  • InChI=1S/C6H7NO/c7-5-2-1-3-6(8)4-5/h1-4,8H,7H2 Yes check.svgY
    Key: CWLKGDAVCFYWJK-UHFFFAOYSA-N Yes check.svgY
  • InChI=1/C6H7NO/c7-5-2-1-3-6(8)4-5/h1-4,8H,7H2
    Key: CWLKGDAVCFYWJK-UHFFFAOYAM
  • Oc1cccc(N)c1
Properties
C6H7NO
Molar mass 109.128 g·mol−1
AppearanceWhite orthorhombic crystals
Density 1.195 g/cm3
Melting point 120 to 124 °C (248 to 255 °F; 393 to 397 K)
Boiling point 164 °C (327 °F; 437 K) at 11 mmHg
Acidity (pKa)
  • 4.37 (amino; 20 °C, H2O)
  • 9.82 (phenol; 20 °C, H2O) [3]
Hazards
GHS labelling:
GHS-pictogram-exclam.svg GHS-pictogram-pollu.svg
Warning
H302, H332, H411
P261, P264, P270, P271, P273, P301+P312, P304+P312, P304+P340, P312, P330, P391, P501
NFPA 704 (fire diamond)
NFPA 704.svgHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Yes check.svgY  verify  (what is  Yes check.svgYX mark.svgN ?)

3-Aminophenol is an organic compound with formula C6H4(NH2)(OH). It is an aromatic amine and a phenol. It is the meta isomer of 2-aminophenol and 4-aminophenol.

Contents

Preparation

3-Aminophenol can be prepared by caustic fusion of 3-aminobenzenesulfonic acid (i.e. heating with NaOH to 245 °C for 6 hours) [4] or from resorcinol via a substitution reaction with ammonium hydroxide. [5]

Uses

One of the most relevant applications of the substance is the synthesis of 3-(diethylamino)phenol, key intermediate for the preparation of several fluorescent dyes (e.g., rhodamine B). Other uses for the compound include hair dye colorants and stabilizers for chlorine-containing thermoplastics. [4]

Related Research Articles

<span class="mw-page-title-main">Acridine</span> Chemical compound

Acridine is an organic compound and a nitrogen heterocycle with the formula C13H9N. Acridines are substituted derivatives of the parent ring. It is a planar molecule that is structurally related to anthracene with one of the central CH groups replaced by nitrogen. Like the related molecules pyridine and quinoline, acridine is mildly basic. It is an almost colorless solid, which crystallizes in needles. There are few commercial applications of acridines; at one time acridine dyes were popular, but they are now relegated to niche applications, such as with acridine orange. The name is a reference to the acrid odour and acrid skin-irritating effect of the compound.

<span class="mw-page-title-main">Acetophenone</span> Chemical compound

Acetophenone is the organic compound with the formula C6H5C(O)CH3. It is the simplest aromatic ketone. This colorless, viscous liquid is a precursor to useful resins and fragrances.

<span class="mw-page-title-main">Aniline</span> Organic compound (C₆H₅NH₂); simplest aromatic amine

Aniline is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the simplest aromatic amine. It is an industrially significant commodity chemical, as well as a versatile starting material for fine chemical synthesis. Its main use is in the manufacture of precursors to polyurethane, dyes, and other industrial chemicals. Like most volatile amines, it has the odor of rotten fish. It ignites readily, burning with a smoky flame characteristic of aromatic compounds. It is toxic to humans.

<span class="mw-page-title-main">Anthraquinone</span> Yellow chemical compound: building block of many dyes

Anthraquinone, also called anthracenedione or dioxoanthracene, is an aromatic organic compound with formula C
14H
8O
2. Isomers include various quinone derivatives. The term anthraquinone however refers to the isomer, 9,10-anthraquinone wherein the keto groups are located on the central ring. It is a building block of many dyes and is used in bleaching pulp for papermaking. It is a yellow, highly crystalline solid, poorly soluble in water but soluble in hot organic solvents. It is almost completely insoluble in ethanol near room temperature but 2.25 g will dissolve in 100 g of boiling ethanol. It is found in nature as the rare mineral hoelite.

<span class="mw-page-title-main">Acetanilide</span> Chemical compound

Acetanilide is an odourless solid chemical of leaf or flake-like appearance. It is also known as N-phenylacetamide, acetanil, or acetanilid, and was formerly known by the trade name Antifebrin.

<span class="mw-page-title-main">Resorcinol</span> Chemical compound

Resorcinol (or resorcin) is a phenolic compound. It is an organic compound with the formula C6H4(OH)2. It is one of three isomeric benzenediols, the 1,3-isomer (or meta-isomer). Resorcinol crystallizes from benzene as colorless needles that are readily soluble in water, alcohol, and ether, but insoluble in chloroform and carbon disulfide.

<span class="mw-page-title-main">Catechol</span> Organic compound (C6H4(OH)2); benzene with two adjacent –OH groups

Catechol, also known as pyrocatechol or 1,2-dihydroxybenzene, is an organic compound with the molecular formula C6H4(OH)2. It is the ortho isomer of the three isomeric benzenediols. This colorless compound occurs naturally in trace amounts. It was first discovered by destructive distillation of the plant extract catechin. About 20,000 tonnes of catechol are now synthetically produced annually as a commodity organic chemical, mainly as a precursor to pesticides, flavors, and fragrances. Small amounts of catechol occur in fruits and vegetables.

<span class="mw-page-title-main">Xanthene</span> Chemical compound used to make dyes

Xanthene (9H-xanthene, 10H-9-oxaanthracene) is the organic compound with the formula CH2[C6H4]2O. It is a yellow solid that is soluble in common organic solvents. Xanthene itself is an obscure compound, but many of its derivatives are useful dyes.

Ethylphenol (4-EP) is an organic compound with the formula C2H5C6H4OH. It is one of three isomeric ethylphenols. A white solid, it occurs as an impurity in xylenols and as such is used in the production of some commercial phenolic resins. It is also a precursor to 4-vinylphenol.

2-Chlorophenol or ortho-chlorophenol is an organic compound with the formula C6H4ClOH. It is one of three isomers of monochlorophenol. Aside from occasional use as a disinfectant, it has few applications. It is an intermediate in the polychlorination of phenol. 2-Chlorophenol is a colorless liquid, although commercial samples are often yellow or amber-colored. It has an unpleasant, penetrating (carbolic) odor. It is poorly soluble in water.

<span class="mw-page-title-main">4-Aminophenol</span> Chemical compound

4-Aminophenol (or para-aminophenol or p-aminophenol) is an organic compound with the formula H2NC6H4OH. Typically available as a white powder, it is commonly used as a developer for black-and-white film, marketed under the name Rodinal.

<span class="mw-page-title-main">4-Nitrophenol</span> Chemical compound

4-Nitrophenol is a phenolic compound that has a nitro group at the opposite position of the hydroxyl group on the benzene ring.

<span class="mw-page-title-main">Sodium phenoxide</span> Chemical Compound

Sodium phenoxide (sodium phenolate) is an organic compound with the formula NaOC6H5. It is a white crystalline solid. Its anion, phenoxide, also known as phenolate, is the conjugate base of phenol. It is used as a precursor to many other organic compounds, such as aryl ethers.

<span class="mw-page-title-main">2-Aminophenol</span> Chemical compound

2-Aminophenol is an organic compound with the formula C6H7NO. Along with its isomer 4-aminophenol, it is an amphoteric molecule and a reducing agent. It is a useful reagent for the synthesis of dyes and heterocyclic compounds. Reflecting its slight hydrophilic character, white powder is moderately soluble in alcohols and can be recrystallized from hot water.

p-Anisidine (or para-anisidine) is an organic compound with the formula CH3OC6H4NH2. A white solid, commercial samples can appear grey-brown owing to air oxidation. It is one of three isomers of anisidine, methoxy-containing anilines. It is prepared by reduction of 4-nitroanisole.

In chemical nomenclature, a preferred IUPAC name (PIN) is a unique name, assigned to a chemical substance and preferred among all possible names generated by IUPAC nomenclature. The "preferred IUPAC nomenclature" provides a set of rules for choosing between multiple possibilities in situations where it is important to decide on a unique name. It is intended for use in legal and regulatory situations.

<span class="mw-page-title-main">Benzenesulfonic acid</span> Chemical compound

Benzenesulfonic acid (conjugate base benzenesulfonate) is an organosulfur compound with the formula C6H6O3S. It is the simplest aromatic sulfonic acid. It forms white deliquescent sheet crystals or a white waxy solid that is soluble in water and ethanol, slightly soluble in benzene and insoluble in nonpolar solvents like diethyl ether. It is often stored in the form of alkali metal salts. Its aqueous solution is strongly acidic.

<span class="mw-page-title-main">3-Chlorophenol</span> Chemical compound

3-Chlorophenol is an organic compound with the molecular formula C6H4ClOH. It is one of three isomers of monochlorophenol. It is a colorless or white solid that melts easily and exhibits significant solubility in water. Together with 3,5-dichlorophenol, it is prepared industrially by dechlorination of polychlorophenols. Alternatively, it arises via the cumene process, which starts with the alkylation of chlorobenzene with propylene.

4-Chlorophenol is an organic compound with the formula C6H4ClOH. It is one of three monochlorophenol isomers. It is a colorless or white solid that melts easily and exhibits significant solubility in water. Its pKa is 9.14.

<span class="mw-page-title-main">4-Iodophenol</span> Chemical compound

4-Iodophenol (p-iodophenol) is an aromatic organic compound. A colorless solid, it is one of three monoiodophenols. 4-Iodophenol undergoes a variety of coupling reactions in which the iodine substituent is replaced by a new carbon group para to the hydroxy group of the phenol. It is also used to enhance chemiluminescence for detection of cancer cells and in the Eclox assay.

References

  1. ↑ [https://www.sigmaaldrich.com/US/en/product/aldrich/100242 |ALDRICH&N5=SEARCH_CONCAT_PNO|BRAND_KEY&F=SPEC 3-Aminophenol] at Sigma-Aldrich.
  2. ↑ Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. p. 690. doi:10.1039/9781849733069-FP001. ISBN   978-0-85404-182-4. Only one name is retained, phenol, for C6H5-OH, both as a preferred name and for general nomenclature. The structure is substitutable at any position. Locants 2, 3, and 4 are recommended, not o, m, and p.
  3. ↑ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. pp. 5–89. ISBN   978-1498754286.
  4. 1 2 Mitchell, Stephen C.; Waring, Rosemary H. (2000). "Aminophenols". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a02_099. ISBN   9783527303854.
  5. ↑ Harada, Haruhisa; Hiroshi, Maki; Sasaki, Shigeru (1986). "Method for the production of m-aminophenol EP0197633A1". Google Patents. Sumitomo Chemical Company, Limited. Retrieved 3 February 2015.
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