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A16303 3,4,5-Trihydroxybenzoic acid monohydrate, 99%

CAS Number
Gallic acid monohydrate

Stock No. Size Price ($) Quantity Availability
A16303-30 250g 64.50
A16303-0B 1000g 185.00
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3,4,5-Trihydroxybenzoic acid monohydrate, 99%


Chemical Properties

Formula Weight
188.14 (170.12anhy)
Melting point
250° dec.
Storage & Sensitivity
Light Sensitive. Ambient temperatures.
It is soluble in alcohol, ether, glycerol, acetone negligible in benzene, chloroform, petroleum ether.


This chemical is used for the determination of cerium, titanium, phosphate and nitrite with the spectrophotometry. It's also used in the manufacture of thiazine dyes, oxazine dyes, drugs, etc.


Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Hygroscopic. Light sensitive. Keep away from Strong oxidizing agents, Strong bases, Acid chlorides, Acid anhydrides.

Literature References

MS Kang.; JS Oh.; IC Kang.; SJ Hong. Inhibitory effect of methyl gallate and gallic acid on oral bacteria. The Journal of Microbiology. 2008, 46, (6), 744-750.

GA Jeffrey.; Y Yeon. Structure of 3,4,5-trihydroxybenzoic acid octyl ester (octyl gallate) dihydrate at 123 K. A non-mesogenic amphiphilic molecule. Acta Cryst. 1990, B46, 519-524.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

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