Pyrogallol

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Pyrogallol CAS 87-66-1

Pyrogallol 87-66-1  1,2,3-Trihydroxybenzene

1,2,3-Benzenetriol; 1,2,3-Trihydroxybenzene; C.I. 76515 CAS 87-66-1

C.I. Oxidation Base 32; Pyrogallol [NF X]; 1,2,3-Benzenetriol; 1,2,3-Trihydroxybenzene; Pyrogallic acid~1,2,3-Trihydroxybenzene; Pyrogallol solution; 1,2,3-Trihydroxybenene; Pyrogallic acid

Name:    Pyrogallol
Synonyms:    1,2,3-Trihydroxybenzen;1,2,3-trihydroxy-benzen;1,2,3-trihydroxybenzen(czech);1,2,3-trihydroxybenzene(pyrogallol);2,3-Dihydroxyphenol;Benzene, 1,2,3-trihydroxy-;benzene-1,2,3-triol;C.I. Oxidation Base 32
CAS:    87-66-1
MF:    C6H6O3
MW:    126.11
EINECS:    201-762-9
Product Categories:    FINE Chemical & INTERMEDIATES;Aromatic Hydrocarbons (substituted) & Derivatives;ACS Grade;Building Blocks;Chemical Synthesis;Essential Chemicals;Inorganic Salts;Organic Building Blocks;Oxygen Compounds;Polyols;Research Essentials;Solutions and Reagents;Hypericum perforatum (St John′;Nutrition Research;Phytochemicals by Plant (Food/Spice/Herb);s wort);Pharmacopoeia;Pharmacopoeia A-Z;Food additive , Antioxidant anticorrosive
Mol File:    87-66-1.mol
Pyrogallol Structure
Pyrogallol Chemical Properties
Melting point     43-47 °C(lit.)
Boiling point     309 °C
density     1.112 g/mL at 25 °C(lit.)
vapor density     4.4 (vs air)
vapor pressure     10 mm Hg ( 167.7 °C)
refractive index     n20/D 1.387
Fp     >230 °F
storage temp.     Desiccate at RT
solubility     water: soluble
form     Very Fine Crystalline Powder
pka    pK1:9.03(0);pK2:11.63(+1) (25°C)
color     White
PH    4-5 (50g/l, H2O, 20℃)
Water Solubility     400 g/L (25 ºC)
Sensitive     Light Sensitive
Merck     14,8000
BRN     907431
Stability:    Stability Stable, but decolourises in light. Combustible. Incompatible with strong oxidising agents, alkalies, metal oxides, ammonia, antipyrine, phenol, iodine, lime water, menthol, potassium permanganate, strong bases.
InChIKey    WQGWDDDVZFFDIG-UHFFFAOYSA-N
CAS DataBase Reference    87-66-1(CAS DataBase Reference)
NIST Chemistry Reference    1,2,3-Benzenetriol(87-66-1)
EPA Substance Registry System    1,2,3-Benzenetriol(87-66-1)
Safety Information
Hazard Codes     Xn
Risk Statements     20/21/22-52/53-68-40-36/38
Safety Statements     22-24/25-61-36/37-26
RIDADR     UN 2811 6.1/PG 3
WGK Germany     3
RTECS     UX2800000
F     8
TSCA     Yes
HS Code     2907 29 00
 MSDS Information
 Pyrogallol is an organic compound with the formula C6H3(OH)3. It is a white solid although because of its sensitivity toward oxygen, samples are typically brownish. It is one of three isomeric benzenetriols.
Appearance & Physical State     odorless white to gray solid
Density     1.453
Boiling Point     309ºC
Melting Point     131-135ºC
Flash Point     164.4ºC
Refractive Index     n20/D 1.387
Water Solubility     400 g/L (25 ºC)
Stability     Stability Stable, but decolourises in light. Combustible. Incompatible with strong oxidising agents, alkalies, metal oxides, ammonia, antipyrine, phenol, iodine, lime water, menthol, potassium permanganate, strong bases.
Vapor Density     4.4 (vs air)
Vapor Pressure     10 mm Hg ( 167.7 °C)
Safety Info
RTECS     UX2800000
Hazard Class     6.1
Safety Statements     S36/37-S61
HS Code     2907299090
WGK Germany     3
Packing Group     III
RIDADR     UN 1814/2811

Pyrogallol Usage And Synthesis
Chemical Properties    white crystalline solid
Uses    Metal-complexing agent
Uses    Complexing agent; reducing agent; alkaline solution indicator for gaseous oxygen.
Uses    Pyrogallol is used in the manufacture of various dyes; in dyeing furs, hairs, and feathers; for staining leather; in engraving;as a developer in photography; and as an analytical reagent..
Definition    ChEBI: A benzenetriol carrying hydroxy groups at positions 1, 2 and 3.
General Description    Odorless white to gray solid. Sinks and mixes with water.

Pyrogallol Preparation Products And Raw materials
Preparation Products    Atracurium besylate -->1,2,3-Trimethoxybenzene-->Ubidecarenone-->1,4-BUTANEDIOL DIACRYLATE-->4-Hydroxybutyl acrylate-->7,8-DIHYDROXY-4-METHYLCOUMARIN-->3,4,5,2',3',4'-Hexahydroxybenzophenone-->BENDIOCARB-->1-CHLOROMETHYL-2,3,4-TRIMETHOXYBENZENE-->Gallamine triethiodide-->GALLEIN
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