2,5-Dihydroxybenzoic acid, 99%

Name: 2,5-Dihydroxybenzoic acid, 99%
Brand: Vaqora Chemicals
SKU: VQ-008215

About 2,5-Dihydroxybenzoic acid, 99%

2,5-Dihydroxybenzoic acid (CAS 490-79-9) is a carboxylic acid offered by Vaqora Chemicals in Synthesis grade at a purity of 98%. With the molecular formula C7H6O4, it has a molar mass of 154.12 g/mol. Common synonyms include 2,5-DHBA and DHB.

The material typically appears as white to orange to green powder or crystals. Key physical data: a melting point of 204-208 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Typical applications include polymer and resin production and organic synthesis. Buyers come mainly from pharmaceutical manufacturing, academic and industrial research and polymers and plastics.

Available in 10 g and 25 g packs, 2,5-Dihydroxybenzoic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Polymer & resin production
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	2,5-Dihydroxybenzoic acid, 99%
Catalogue No.	VQ-008215
CAS Number	490-79-9
IUPAC name	2,5-dihydroxybenzoic acid
Molecular formula	C₇H₆O₄
Molecular weight	154.12 g/mol
Exact mass	154.0266
Grade	Synthesis
Purity / assay	98%
HSN code	29182990
InChIKey	WXTMDXOMEHJXQO-UHFFFAOYSA-N
SMILES	C1=CC(=C(C=C1O)C(=O)O)O
PubChem CID	3469

Physical properties
Physical form	Crystalline
Appearance	White to orange to green powder or crystals
Melting point	204-208 °C
LogP (XLogP3)	1.6
H-bond donors / acceptors	3 / 4
TPSA	77.8 Å²
Synonyms	2,5-DHBA, DHB, Gentisic acid, Hydroquinonecarboxylic acid, Benzoic acid, 2,5-dihydroxy-, 5-Hydroxysalicylic acid, 2,5-Dioxybenzoic acid, Salicylic acid, 5-hydroxy-, Kyselina gentisinova, Acido gentisico, Acide gentisique, Acidum gentisicum

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 2,5-Dihydroxybenzoic acid, 99%?

The CAS Registry Number of 2,5-Dihydroxybenzoic acid, 99% is 490-79-9. It is also known as 2,5-DHBA, DHB, Gentisic acid.

What is the molecular formula and molecular weight of 2,5-Dihydroxybenzoic acid, 99%?

2,5-Dihydroxybenzoic acid, 99% has the molecular formula C7H6O4 and a molecular weight of 154.12 g/mol. Its IUPAC name is 2,5-dihydroxybenzoic acid.

Which grade and pack sizes of 2,5-Dihydroxybenzoic acid, 99% can I order?

We supply 2,5-Dihydroxybenzoic acid, 99% in Synthesis (98%) grade, in 10 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 2,5-Dihydroxybenzoic acid, 99%?

Yes. Every lot of 2,5-Dihydroxybenzoic acid, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 2,5-Dihydroxybenzoic acid, 99% be shipped internationally?

Yes. 2,5-Dihydroxybenzoic acid, 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.