Molekula
Gallic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Gallic acid is a naturally occurring polyphenolic compound used in pharmaceuticals, cosmetics, and food preservation due to its antioxidant properties. Industrially, it serves as a starting material for gallate ester antioxidants and pyrogallol, and is used in writing inks, photographic developers, and leather tanning and dyeing. It is available in high purity and is commonly employed in research and industrial applications. CAS: 149-91-7, Molecular Formula: C7H6O5, Molecular Weight: 170.12 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies Gallic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — $266.50 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Off-white powder |
| Heavy metals | ≤10ppm |
| Loss on Drying | ≤0.5% |
| Assay | ≥99% |
| Turbidity | Clear |
| Residue on Ignition | ≤0.1% |
| APHA | ≤180 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless or slightly yellow cyrstalline needles or prisms. |
| Melting Point | 258 - 265 °C |
| Boiling Point | 501 °C at 760 mmHg |
| Density | 1.7 (relative, water = 1) |
| Solubility (other solvents) | Soluble in oxygenated solvents |
| Vapour Pressure | 0.00000012 mmHg |
| pKa | pKa = 4.21 |
| log P (octanol/water) | 0.70 |
Source: PubChem CID 370 (HSDB, Human Metabolome Database (HMDB), ICSC, Haz-Map, ChEMBL)
Identification
| Property | Value |
|---|---|
| SKU | 35182355 |
| CAS Number | 149-91-7 |
| IUPAC Name | 3,4,5-trihydroxybenzoic acid |
| EC Number | 205-749-9 |
| Molecular Formula | (HO)3C6H2CO2H |
| Molecular Weight | 170.12 |
| Exact Mass | 170.0215 |
| SMILES | C1=C(C=C(C(=C1O)O)O)C(=O)O |
| InChIKey | LNTHITQWFMADLM-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6O5/c8-4-1-3(7(11)12)2-5(9)6(4)10/h1-2,8-10H,(H,11,12) |
| PubChem CID | 370 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29182975 |
| Tariff Code | 2918290090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 3,4,5-hydroxybenzoic acid
- 3,4,5-Trihydroxybenzoic acid
- Acid, Gallic
- Benzoic acid, 3,4,5-trihydroxy-
- Gallic Acid 1520
- GALLIC ACID ANHYDROUS
- Gallic acid, tech.
- GALOP
- Kyselina gallova
- Pyrogallol-5-carboxylic acid
Frequently asked questions
What is gallic acid used for?
Gallic acid is commonly used as an antioxidant, in the synthesis of pharmaceuticals, and as a reagent in analytical chemistry.
What is the chemical formula and molecular weight of gallic acid?
The formula is (HO)3C6H2CO2H and the molecular weight is 170.12 g/mol.
How should gallic acid be stored?
Gallic acid should be stored at ambient temperature, protected from moisture and light.
What grade of gallic acid does Molekula supply?
Molekula supplies gallic acid in analytical grade.
Can Molekula supply gallic acid in bulk?
Yes, Molekula can supply gallic acid in bulk quantities; please contact our sales team for details.
What documentation comes with a gallic acid order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.