PYROGALLOL

PRODUCT IDENTIFICATION
CAS NO. 87-66-1

PYROGALLOL 
EINECS NO.

201-762-9
FORMULA C6H3(OH)3
MOL WT. 126.11
H.S. CODE 2918.90
TOXICITY  
SYNONYMS 1,2,3-Benzenetriol; 2,3-Dihydroxyphenol;
Benzenetriol; C.I. 76515; C.I. Oxidation Base 32; fouramine base ap; Fouramine Brown AP; Fourrine 85; Fourrine PG; Piral; Pyro; Pyrogallic acid; 1,2,3-Trihydroxybenzene;

SMILES

 

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE white crystalline powder
MELTING POINT

131 - 133 C
BOILING POINT 309 C
SPECIFIC GRAVITY 1.453
SOLUBILITY IN WATER Soluble (soluble in alcohol, ether)
AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS Health: 21 Flammability: 1 Reactivity: 0

REFRACTIVE INDEX

  
FLASH POINT

 
STABILITY Stable under ordinary conditions. Air, light sensitive.

GENERAL DESCRIPTION AND APPLICATIONS
There are three isomeric compounds of trihydroxybenzene molecule structure, which all have traditional names respectively. Their names are related with the equivalent dihydroxybenzene compounds. The names of the three compounds indicate which of the hydrogens on the benzene ring portion of the molecule have been replaced by hydroxyl groups. The isomer of 1,2,3-trihydroxybenzene is called pyrogallic acid (or pyrogallol).  This compound is a poisonous acid, derived from gallic acid, and used  in the manufacturing colorants such as azo dyes and photographic developers and externally as an antimicrobial to treat certain skin diseases. Phloroglucin (or called phloroglucinol) is 1,3,5-trihydroxybenzene which presents as the genin of many glycosides, particulrally in the bark of apple and other trees. It is used in as a reagent for pentoses, pentosans, glycuronates, hydrochloric acid in gastric juice. It is an excellent bone decalcifying agent and a floral preservative. It is used in the manufacture of pharmaceuticals. The 1,2,4- isomer is hydroxyquinol (or called hydroxyhydroquinone). Trihydroxybenzenes have three hydroxyl groups in one benzene ring. They can derive numerous esters and salts. They are used as chemical intermediate to synthesis target molecules of pharmaceuticals, pesticides, stabilizer, antioxidant, colorants, perfumes, photoinitiators, and other organic compounds.

Members of pyrogallol molecules

Product

CAS RN
Gallamine triethiodide 65-29-2
Pyrogallol 87-66-1
Pyrogallol 1,3-dimethyl ether 91-10-1
Pyrogallol triacetate 525-52-0
5-Methyl-1,2,3-benzenetriol609-25-6
2,3,4-Trihydroxybenzoic acid 610-02-6
1,2,4-Benzenetriacetate 613-03-6
1,2,3-Trimethoxybenzene 634-36-6
3-Methoxycatechol 934-00-9
5-Hydroxydopamine 1927-04-4
Gallein 2103-64-2
2,3,4-Trihydroxybenzylhydrazine3614-72-0
(1,1'-Biphenyl)-2,3,4-triol 3934-76-7
4,6-Di-t-butylpyrogallol 3934-77-8
2-Hydroxydopamine 4228-71-1
5-(2-Aminoethyl)pyrogallol hydrochloride 5720-26-3
4-Ethylsyringol 14059-92-8
Bromopyrogallol red 16574-43-9
Potassium 1,2,3-benzenetriol 20045-34-5
Oxidopamine hydrochloride 28094-15-7
Pyrogallol sulfonphthalein 32638-88-3
Exifone 52479-85-3
4,5,6-Trichloro-1,2,3-benzenetriol 56961-21-8
4-(3,4,5-Trihydroxythiobenzoyl)morpholine70733-98-1 
4-(Aminomethyl)-1,2,3-benzenetriol 79146-83-1
5-(Aminomethyl)-1,2,3-benzenetriol 79146-84-2
4-(Aminomethyl)-1,2,3-benzenetriol 79490-80-5
5-(Aminomethyl)-1,2-benzenetriol hydriodide 79490-74-7
1-(2,4,6-Trihydroxyphenyl)-1-nonanone 100079-26-3
1-(3,4,5-Trihydroxyphenyl)-1-heptanone 100079-25-2

SALES SPECIFICATION

APPEARANCE

 white crystalline powder
PURITY

99.0% min

CHLORIDE

0.05% max

SULFATE

0.05% max

HEAVY METALS

10ppm max
MELTING POINT

250 C
TRANSPORTATION
PACKING  
HAZARD CLASS Not regulated
UN NO.

 
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 40-20/21/22-52/53, Safety Phrases: 36/37-61