2,5-Dihydroxybenzoic acid

Basic Information

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CAS Number

490-79-9

Molecular Formula

C7H6O4

Molecular Weight

154.12 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Physical State

Powder

Melting Point

204-208 °C

Boiling Point

406.9℃ at 760 mmHg

Flash Point

214℃

Solubility

It is soluble in alcohol and ether.

Refractive Index

1.6400 (estimate)

Vapor Pressure

0.0±1.0 mmHg at 25°C

SMILES

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OC(=O)C1=C(O)C=CC(O)=C1

InChI

InChI=1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)

InChIKey

WXTMDXOMEHJXQO-UHFFFAOYSA-N

LogP

0.7959999999999998

pKa

2.97(at 25℃)

Topological Polar Surface Area

77.76 Å²

Hydrogen Bond Donor/Acceptor

3 / 4

Complexity

157

Safety Information

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GHS Hazard Pictograms

H302

H315

H319

H335

Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Storage Conditions

2-8℃

Sensitiveness

photolabile

Synonyms & References

English

2,5-Dihydroxybenzoic acid
Gentisic acid
Hydroquinonecarboxylic acid
2,5-Dhba
2,5-dihydroxy-benzoicaci
2,5-Dioxybenzoic acid
5-Hydroxysalicylic acid
5-hydroxy-salicylicaci
acido2,5-diidrossibenzoico
Benzoic acid, 2,5-dihydroxy-
2,5-Dihydroxybenzoic Acid (DHB)
2.5-Dihydroxybenzoicacid
GENTISIC ACID(RG)
2,5-DHBA,DHB,Gentisic acid
2,5-dihydroxybenzoate
2,5-dihydroxy-benzoic acid
2,5-dihydroxyphenylcarboxylic acid
Benzoic acid,2,5-dihydroxy
Gensigen
Gensigon
Gentisate
Hydroquinonecarboxylic acid
MS]
DHB
DHBA
2,5-Dihydroxy benzoic acid
Gentisinic acid
Carboxyhydroquinone
Salicylic acid, 5-hydroxy-
Kyselina gentisinova
Gentisinate

MDL Number

MFCD00002460

Customs Code

29182990

FAQ

What is 2,5-Dihydroxybenzoic acid (CAS: 490-79-9)?

2,5-Dihydroxybenzoic acid, also known as 2,5-DHBA, is a type of hydroxybenzoic acid with the chemical formula C7H6O4. It is a white crystalline solid that is soluble in water and polar organic solvents. This compound is commonly used in various scientific and industrial applications due to its antioxidant and anti-inflammatory properties.

What are the main uses of 2,5-Dihydroxybenzoic acid (CAS: 490-79-9)?

2,5-Dihydroxybenzoic acid is utilized in pharmaceuticals as an antioxidant and in the synthesis of other organic compounds. It also finds applications in the food industry as a preservative and in research for its role in studying biological activities. Additionally, it is used in the production of dyes and pigments due to its chemical reactivity and stability.

Is 2,5-Dihydroxybenzoic acid (CAS: 490-79-9) safe?

2,5-Dihydroxybenzoic acid is generally considered safe when handled properly. However, it should be treated with caution as it may cause skin and eye irritation. Safety data sheets recommend using appropriate personal protective equipment, such as gloves and goggles, and working in a well-ventilated area. It is also important to follow established safety standards for chemical handling and disposal.

How should 2,5-Dihydroxybenzoic acid (CAS: 490-79-9) be stored?

2,5-Dihydroxybenzoic acid should be stored in a cool, dry, and dark place to maintain its stability. It is best kept in a sealed container away from moisture and air. Storage at temperatures below 25°C is recommended to prevent degradation. Avoid exposure to light and ensure proper ventilation to maintain quality and safety.