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Home/Compounds/Food Additive/4-hydroxybenzoic acid
C7H6O3
138.12 g/mol
Food AdditiveDanger

4-HYDROXYBENZOIC ACID

CAS99-96-7EC202-804-9
Category
Food Additive
Compound Class
Organic Acid
Primary Use
intermediate for food preservatives

4-Hydroxybenzoic acid is a monohydroxybenzoic acid derived from benzoic acid, featuring a hydroxy group at the para position of the benzene ring. It serves as a plant and algal metabolite and is primarily used as an intermediate in the production of food preservatives.

intermediate for food preservativesintermediate for synthetic drugsintermediate for fungicides

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

SimilarStructure SimilarSimilarity 0.84

4'-Hydroxy-4-biphenylcarboxylic acid

CAS58574-03-1

research compound

ReferenceSame Category

Sodium isobutyrate

CAS996-30-5

food preservative and flavoring agent

ReferenceSame Category

Glyceryl dibehenate

CAS99880-64-5

fat ingredient in cosmetics and foods

ReferenceSame Category

Methylparaben

CAS99-76-3

preservative in foods and cosmetics

ReferenceSame Category

Methyl gallate

CAS99-24-1

antioxidant

Referencestereoisomer of

4-Hydroxy(²H₄)benzoic acid

CAS152404-47-2

research compound

Referencestereoisomer of

Potassium paraben

CAS16782-08-4

preservative in cosmetics and food

Safety Reference

Corrosive
Corrosive
Harmful
Harmful
Danger
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
Identifiers
IUPAC Name

4-hydroxybenzoic acid

InChIKey

FJKROLUGYXJWQN-UHFFFAOYSA-N

SMILES

C1=CC(=CC=C1C(=O)O)O

Synonyms (51)
  • 4-HBA
  • PHB
  • Sodium Ethyl Parahydroxybenzoate EP Impurity A; Aspirin Impurity A; Acetylsalicylic Acid EP Impurity A; Propyl Parahydroxybenzoate EP Impurity A
  • 3pcc
  • 3pch
  • 4-Carboxyphenol
  • 4-HYDROXYBENZOIC ACID
  • 4-Hydroxybenzoate
  • 4-Hydroxybenzoate, III
  • 4-Hydroxybenzoesaeure
  • 4-OH benzoic acid
  • 4-hydoxybenzoic acid
  • 4-hydroxy-benzoicaci
  • 4-hydroxylbenzoic acid
  • 4-hyroxybenzoic acid
  • 4beta-hydroxybenzoic acid
  • Acido p-idrossibenzoico
  • Aspirin Impurity A
  • Benzoic acid, 4-hydroxy-
  • Benzoic acid, p-hydroxy-
  • HYDROXYBENZOIC ACID, PARA
  • Hydroxybenzenecarboxylic acid
  • Hydroxybenzoic acid
  • Kyselina 4-hydroxybenzoova
  • Paraben-acid
  • SALICYLIC ACID IMPURITY A
  • p-Hydroxybenzoic
  • p-Hydroxybenzoic acid
  • p-Oxybenzoesaure
  • p-Oxybenzoesaure [German]
  • p-Salicylate
  • p-Salicylic acid
  • p-carboxyphenol
  • p-hydroxy-Benzoate
  • p-hydroxy-bezoic acid
  • para-Hydroxybenzoic acid
  • phenol derivative, 8
  • rho-hydroxybenzoic acid