Molekula
2,4-Dihydroxybenzoic 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
2,4-Dihydroxybenzoic acid is an organic compound featuring two hydroxyl groups and a carboxyl group on a benzene ring, widely used as a precursor in pharmaceuticals, preservatives, and UV absorbers. It also serves as an intermediate for dyestuffs, a flavouring agent, a MALDI matrix for synthetic polymer analysis, and a laboratory test reagent for iron. It appears as a white to off-white crystalline powder with a melting point of 214–218°C. Catalogue details: CAS 89-86-1, molecular formula C7H6O4, molecular weight 154.12 g/mol, requires ambient storage, and carries a Danger signal word because it causes serious eye damage. Molekula supplies 2,4-Dihydroxybenzoic 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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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 to yellowish crystal powder |
| Melting Point | 208 - 217℃ |
| Purity | ≥ 99.0% |
| Moisture | ≤ 1.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 218 - 219 °C |
| Boiling Point | 309 to 310 °C at 760 mmHg |
| Solubility (other solvents) | Soluble in hot water, organic solvents, oils |
| Vapour Pressure | 0.0000021 mmHg |
| pKa | pKa = 3.11 (at 25 °C) |
Source: PubChem CID 1491 (Human Metabolome Database (HMDB), Joint FAO/WHO Expert Committee on Food Additives (JECFA), Haz-Map, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90028377 |
| CAS Number | 89-86-1 |
| IUPAC Name | 2,4-dihydroxybenzoic acid |
| EC Number | 201-946-9 |
| Molecular Formula | (HO)2C6H3CO2H |
| Molecular Weight | 154.12 |
| Exact Mass | 154.0266 |
| SMILES | C1=CC(=C(C=C1O)O)C(=O)O |
| InChIKey | UIAFKZKHHVMJGS-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6O4/c8-4-1-2-5(7(10)11)6(9)3-4/h1-3,8-9H,(H,10,11) |
| PubChem CID | 1491 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29182965 |
| Tariff Code | 2918290090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- 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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
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
- 2,4-Resorcylic acid
- 4-Carboxyresorcinol
- 4-Hydroxysalicylic acid
- Benzoic acid, 2,4-dihydroxy-
- beta-Resorcinolic acid
- beta-Resorcylic acid
- Coupler 320
- FEMA NO. 3798
- p-Hydroxysalicylic acid
- RESORCYLIC ACID, BETA
Frequently asked questions
What is 2,4-Dihydroxybenzoic acid commonly used for?
It is primarily used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and as a precursor for UV absorbers and antioxidants in polymers.
What is the molecular formula and molecular weight of 2,4-Dihydroxybenzoic acid?
The molecular formula is (HO)₂C₆H₃CO₂H, and the molecular weight is 154.12 g/mol.
What safety classification does 2,4-Dihydroxybenzoic acid have?
The product is classified with the Signal Word: Danger, indicating it requires careful handling due to potential hazards.
How should 2,4-Dihydroxybenzoic acid be stored?
Store in a tightly sealed container at ambient temperature, away from moisture and direct sunlight.
Does Molekula supply 2,4-Dihydroxybenzoic acid in bulk quantities?
Yes, we offer bulk quantities of 2,4-Dihydroxybenzoic acid to meet large-scale production needs—contact us for specific packaging options.
What documentation is provided with an order of 2,4-Dihydroxybenzoic acid?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a batch-specific quality report.
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.