3-Hydroxybenzoic acid
3-Hydroxybenzoic acid (CAS: 99-06-9), with the molecular formula HOC6H4CO2H and a molar mass of 138.12 g/mol, is a valuable organic compound. As a derivative of benzoic acid featuring a hydroxyl group, it serves as a versatile building block in chemical synthesis. Its structure makes it useful in the preparation of various organic molecules and intermediates across different industrial sectors.

Organic Synthesis Intermediate
3-Hydroxybenzoic acid is a key intermediate in the synthesis of more complex organic molecules. It is utilised in reactions involving both its carboxylic acid and phenolic hydroxyl functionalities.
Pharmaceutical Building Block
This compound serves as a foundational component in the development of pharmaceutical agents. Its structural features are incorporated into active pharmaceutical ingredients (APIs) and their precursors.
Material Science Applications
The reactivity of 3-Hydroxybenzoic acid lends itself to applications in material science, potentially in the synthesis of polymers or specialized resins where its functional groups can be leveraged.
| Molecular weight | 138.12 |
|---|---|
| Linear formula | HOC6H4CO2H |
| Assay | 98% |
| Grade | Vetec™ reagent grade |
| Melting point | 200-203 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 3-Hydroxybenzoic acid used for?
+
3-Hydroxybenzoic acid is primarily used as a building block in organic synthesis, particularly in the development of pharmaceutical intermediates and potentially in material science applications.
What are the CAS number and molecular formula for 3-Hydroxybenzoic acid?
+
The CAS number for 3-Hydroxybenzoic acid is 99-06-9, and its molecular formula is HOC6H4CO2H.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 3-Hydroxybenzoic acid in Vetec™ reagent grade with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 3-Hydroxybenzoic acid be handled?
+
3-Hydroxybenzoic acid is classified with GHS07 symbol and a warning signal word. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area.
How is 3-Hydroxybenzoic acid packed, shipped, and exported?
+
As a global supplier, Tech Serve Solutions packages and exports 3-Hydroxybenzoic acid according to international shipping regulations for chemicals. Specific packaging details are available upon request.
How can I request a quote or sample for 3-Hydroxybenzoic acid?
+
To request a quote or a sample of 3-Hydroxybenzoic acid, please contact our sales team through the website or by phone, providing your specific requirements.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis