Pyogallic acid (CAS 87-66-1) is a chemical reagent and chemical raw material with many uses. It is widely used in pharmaceutical synthesis, dyes, food, pesticides and electronic products, etc., as a developer, heat-sensitive agent, auxiliary agent of polymer materials, and chemical Analytical reagents, etc., and other products cannot be substituted in some fields. At present, the main raw material for the production of pyrogallic acid is gallic acid. Gallic acid is produced by hydrolysis of the forest product Galla Chinensis or Tara. Gallnut is a special product of our country, with good quality and large quantity (the output accounts for about 1/4 of the world output). Therefore, the deep processing of gallnut has great economic and social benefits.

Pyogallic acid (CAS 87-66-1) is white shiny crystal, melting point 131～134℃, boiling point 309℃, relative density 1.46, UVλmax2.88nm when pH=5.4 in water. Easily soluble in water, alcohol and ether, slightly soluble in benzene, chloroform and carbon disulfide. Heating can sublimate. It will turn brown when exposed to light or in the air. When the solution is alkaline, it will quickly absorb oxygen and change color. Packaging: The product is packed in cardboard drums, each with a net weight of 25 kg.

Name: Pyrogallol
CAS: 87-66-1
Molecular Formula: C6H6O3
Molecular Weight: 126.11
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Names and Identifiers
Name Pyrogallol
Synonyms C.I. 76515
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
CAS 87-66-1
EINECS 201-762-9
InChI InChI=1/C6H6O3/c7-4-2-1-3-5(8)6(4)9/h1-3,7-9H

Physico-chemical Properties

Molecular Formula C6H6O3
Molar Mass 126.11 g/mol
Density 1.453
Melting Point 131-135℃
Boling Point 309℃
Solubility 400 g/L (25℃)

Risk and Safety
Hazard Symbols Xn – Harmful
Harmful
Risk Codes 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
Safety Description S36/37 – Wear suitable protective clothing and gloves.
S61 – Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs UN 1814/2811

Products :

CAS 87-66-1, Pyrogallol, C6H6O3
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