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Cas Database |
| Name |
Pyrogallol |
EINECS | 211-207-2 |
| CAS No. | 87-66-1 | Density | 1.488 g/cm3 |
| PSA | 60.69000 | LogP | 0.80340 |
| Solubility | 400 g/L (25 °C) in water | Melting Point |
43-47 °C(lit.) |
| Formula | C6H6O3 | Boiling Point | 309 °C at 760 mmHg |
| Molecular Weight | 126.112 | Flash Point | 164.4 °C |
| Transport Information | UN 2811 6.1/PG 3 | Appearance | white crystalline solid |
| Safety | 22-24/25-61-36/37 | Risk Codes | 20/21/22-52/53-68-40 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
Fourrine PG;NSC 5035;Pyrogallicacid;Pyrogallol (8CI);1,2,3-Trihydroxybenzene;2,3-Dihydroxyphenol;Benzene-1,2,3-triol;C.I. 76515;C.I. Oxidation Base 32;Fouramine Brown AP;Fourrine 85; |
Article Data | 112 |
Pyrogallol Synthetic route
| Conditions | Yield |
|---|---|
| With cucumber juice at 30 - 35℃; for 48h; Inert atmosphere; Green chemistry; | 98% |
| With Citrobacter sp at 28℃; for 24h; enzymatic synthesis by bacterium in a mixed medium containing: 0.5percent maltose, 0.2percent (NH4)2HPO4, 0.1percent KH2PO4, 0.05percent KCl, 0.05percentMgSO4.7H2Oand 0.05percent yeast, pH=4.5; | 97.4% |
| With Cocos nucifera juice at 20℃; for 48h; Inert atmosphere; | 96% |
- 17864-23-2
1,2,3-tris((trimethylsilyl)oxy)benzene
- 87-66-1
2-hydroxyresorcinol
| Conditions | Yield |
|---|---|
| With methanol; 1,3-disulfonic acid imidazolium hydrogen sulfate at 20℃; for 0.133333h; Green chemistry; | 96% |
| Conditions | Yield |
|---|---|
| With aluminium(III) iodide; tetra-(n-butyl)ammonium iodide In benzene for 0.5h; Heating; | 95% |
| With aluminum (III) chloride In chloroform for 4h; Solvent; Reflux; | 80% |
- 24677-78-9
2,3-dihydroxybenzaldehyde
- 87-66-1
2-hydroxyresorcinol
| Conditions | Yield |
|---|---|
| With dihydrogen peroxide at 20℃; for 0.833333h; Dakin Phenol Oxidation; Green chemistry; | 95% |
| With dihydrogen peroxide In water; acetonitrile at 35℃; for 12h; Dakin Phenol Oxidation; | 72% |
| Conditions | Yield |
|---|---|
| With hydrogen bromide | 90% |
| With cytochrome P450 oxidase; GcoA-F169A reductase; oxygen; NADH; sodium chloride In aq. buffer at 25℃; pH=7.5; Kinetics; Reagent/catalyst; Enzymatic reaction; |
- 7647-01-0
hydrogenchloride
- 187221-61-0
triphenylantimony o-hydroxy-o-phenylenediamine
A
- 594-31-0, 34716-91-1, 20265-29-6
triphenylantimony dichloride
B
- 87-66-1
2-hydroxyresorcinol
| Conditions | Yield |
|---|---|
| heating (3 h, water bath); soln. pouring into Petri dish, solid extraction by benzene; | A 83% B 90% |
| Conditions | Yield |
|---|---|
| With hydrogenchloride In acetic acid | 87% |
- 30182-67-3
1,3-Cyclohexanedione
- 87-66-1
2-hydroxyresorcinol
| Conditions | Yield |
|---|---|
| With oxygen; tetrabutyl ammonium fluoride In chloroform for 2h; Irradiation; | 70% |
| With polymer bound rose bengal; tetrabutyl ammonium fluoride; oxygen In chloroform at 0℃; for 2h; Irradiation; | 70% |
| Conditions | Yield |
|---|---|
| With hydrogenchloride; water at 250℃; under 37503.8 Torr; for 3h; Sealed tube; Inert atmosphere; | 59% |
| Conditions | Yield |
|---|---|
| With aluminium(III) iodide; dimethyl sulfoxide In acetonitrile at 20℃; for 48h; Time; | A 24% B 50% |
| With 3,4-Dihydroxybenzoic acid; holo-corrinoid protein reconstructed from recombinant apo-protein and methyl cobalamin; methyl transferase I from Desulfitobacterium hafniense; potassium chloride; potassium hydroxide In dimethyl sulfoxide at 30℃; for 24h; pH=6.5; Solvent; Enzymatic reaction; | A 12% B n/a |
Pyrogallol Chemical Properties
Molecular structure of Pyrogallol (CAS NO.87-66-1) is:
Product Name: Pyrogallol
CAS Registry Number: 87-66-1
IUPAC Name: benzene-1,2,3-triol
Molecular Weight :126.11004 [g/mol]
Molecular Formula: C6H6O3
XLogP3: 0.5
H-Bond Donor: 3
H-Bond Acceptor: 3
EINECS: 211-207-2
Melting Point: 43-47 °C(lit.)
Surface Tension: 78.6 dyne/cm
Density: 1.488 g/cm3
Flash Point: 164.4 °C
Enthalpy of Vaporization: 57.17 kJ/mol
Boiling Point: 309 °C at 760 mmHg
Vapour Pressure: 0.000361 mmHg at 25 °C
Refractive index: n20/D 1.387
Water Solubility: 400 g/L (25 °C)
Sensitive: Light Sensitive
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.
Product Categories: FINE Chemical & INTERMEDIATES;Aromatic Hydrocarbons (substituted) & Derivatives
Pyrogallol Uses
Pyrogallol (CAS NO.87-66-1) can be used in hair dying, dying of suturing materials and for oxygen absorption in gas analysis. but pyrogallol is not likely to be used as a modern hair dye due to the suspected toxicity of the compound.It also has antiseptic properties. It was also used as a developing agent in black-and-white developers, but its use is largely historical except for special purpose applications. When in alkaline solution, it absorbs oxygen from the air, turning purple from a colourless solution. It can be used in this way to calculate the amount of oxygen in air.
Pyrogallol Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 75mg/kg (75mg/kg) | Archives of Environmental Contamination and Toxicology. Vol. 12, Pg. 355, 1983. | |
| dog | LDLo | intravenous | 80mg/kg (80mg/kg) | "Handbook of Toxicology," 4 vols., Philadelphia, W.B. Saunders Co., 1956-59Vol. 1, Pg. 254, 1955. | |
| dog | LDLo | oral | 25mg/kg (25mg/kg) | "Handbook of Toxicology," 4 vols., Philadelphia, W.B. Saunders Co., 1956-59Vol. 1, Pg. 254, 1955. | |
| dog | LDLo | subcutaneous | 300mg/kg (300mg/kg) | "Handbook of Toxicology," 4 vols., Philadelphia, W.B. Saunders Co., 1956-59Vol. 1, Pg. 254, 1955. | |
| frog | LDLo | subcutaneous | 200mg/kg (200mg/kg) | SENSE ORGANS AND SPECIAL SENSES: MIOSIS (PUPILLARY CONSTRICTION): EYE BEHAVIORAL: MUSCLE WEAKNESS BEHAVIORAL: ATAXIA | Revue Medicale de la Suisse Romande. Vol. 15, Pg. 561, 1895. |
| human | LDLo | oral | 28mg/kg (28mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: DYSPNEA GASTROINTESTINAL: OTHER CHANGES | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 507, 1969. |
| man | LDLo | subcutaneous | 120mg/kg (120mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BEHAVIORAL: EXCITEMENT GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS | Znetralbaltt fuer die Medizinischen Wissenschaften. Vol. 19, Pg. 545, 1881. |
| mouse | LD50 | intraperitoneal | 400mg/kg (400mg/kg) | National Technical Information Service. Vol. AD691-490, | |
| mouse | LD50 | oral | 300mg/kg (300mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 38(8), Pg. 6, 1973. | |
| mouse | LD50 | subcutaneous | 566mg/kg (566mg/kg) | Zeitschrift fuer die Gesamte Innere Medizin und Ihre Grenzgebiete. Vol. 2, Pg. 333, 1947. | |
| rabbit | LD50 | oral | 1600mg/kg (1600mg/kg) | GASTROINTESTINAL: GASTRITIS LUNGS, THORAX, OR RESPIRATION: CHRONIC PULMONARY EDEMA | American Journal of Veterinary Research. Vol. 23, Pg. 1264, 1962. |
| rabbit | LDLo | subcutaneous | 1gm/kg (1000mg/kg) | "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1289, 1935. | |
| rat | LDLo | subcutaneous | 650mg/kg (650mg/kg) | Journal of Agricultural and Food Chemistry. Vol. 17, Pg. 497, 1969. |
Pyrogallol Safety Profile
Hazard Codes: 
Xn
Risk Statements: 20/21/22-52/53-68-40
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
R68:Possible risk of irreversible effects.
R40:Limited evidence of a carcinogenic effect.
Safety Statements: 22-24/25-61-36/37
S22:Do not breathe dust.
S24/25:Avoid contact with skin and eyes.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
S36/37:Wear suitable protective clothing and gloves.
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 3
RTECS: UX2800000
F: 8
HazardClass: 6.1
PackingGroup: III
Pyrogallol Specification
Pyrogallol , its cas register number is 87-66-1. It also can be called 1,2,3-Benzenetriol ; 1,2,3-Trihydroxybenzene ; C.I. 76515 .It is a odorless white to gray solid. It sinks and mixes with water. Its reactions turns gray on exposure to light or air.
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