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254002

Sigma-Aldrich

Pyrogallol

ACS reagent

Synonym(s):

1,2,3-Trihydroxybenzene, 2,3-Dihydroxyphenol, Pyrogallic acid

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About This Item

Linear Formula:
C6H3(OH)3
CAS Number:
Molecular Weight:
126.11
Beilstein:
907431
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

4.4 (vs air)

vapor pressure

10 mmHg ( 167.7 °C)

form

solid

ign. residue

≤0.005%

bp

309 °C (lit.)

mp

133-134 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals (as Pb): ≤5 ppm

SMILES string

Oc1cccc(O)c1O

InChI

1S/C6H6O3/c7-4-2-1-3-5(8)6(4)9/h1-3,7-9H

InChI key

WQGWDDDVZFFDIG-UHFFFAOYSA-N

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Application

Metal-complexing agent
Pyrogallol undergoes quick autooxidation in alkaline solution. Due to this property, its alkaline solution is generally used for the removal of oxygen from gases. Pyrogallol may also be used to prepare pyrogallol monomethyl ether via methylation and gallacetophenone via a modified Nencki reaction.

Pictograms

Health hazardExclamation mark

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Muta. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Pyrogallol 1-monomethyl ether
Surrey AR
Organic Syntheses, 26, 90-90 (1946)
Sanja Matić et al.
Mutation research, 755(2), 81-89 (2013-07-09)
The present study was undertaken to investigate the hepatoprotective effect of the methanol extract of Cotinus coggygria Scop. in rats exposed to the hepatotoxic compound pyrogallol. Assessed with the alkaline version of the comet assay, 1000 and 2000mg/kg body weight
Gianluca Dimartino
Journal of AOAC International, 90(5), 1340-1345 (2007-10-25)
A convenient method is presented for determination of vitamin D in natural cheese, processed cheese, milk, cereals, noncarbonated soft drinks, and juice by liquid chromatography/ mass spectrometry (LC/MS). Samples were saponified, extracted, evaporated, redissolved in acetonitrile, and injected into an
Gallacetophenone
Badhwar IC and Venkataraman K
Organic Syntheses, 14, 40-40 (1934)
Involvement of the superoxide anion radical in the autoxidation of pyrogallol and a convenient assay for superoxide dismutase.
Marklund S and Marklund G.
European Journal of Biochemistry, 47(3), 469-474 (1974)

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