3,4-DIHYDROXYBENZOIC ACID

Also known as: Protocatechuic acid, BRN 1448841, EINECS 202-760-0, UNII-36R5QJ8L4B, 2,4-Dihydroxybenzoate (+7 more)

3,4-DIHYDROXYBENZOIC ACID (CAS 99-50-3) is a cosmetic cosmetic ingredient functioning as Skin Protecting. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.

View industrial chemical safety profile for CAS 99-50-3 →

Auto-generated CPSR Part A draft with source citations
Function
Skin Protecting
Safety Rating
GOOD

Chemistry & Identifiers

Formula
C7H6O4
MW
154.12 g/mol
PubChem CID
72
IUPAC Name
3,4-dihydroxybenzoic acid
InChIKey
YQUVCSBJEUQKSH-UHFFFAOYSA-N

Regulatory Status

EU EU Status permitted
US US Status Not specifically regulated

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

PubChem Annotations

Safety and regulatory annotations from PubChem (NCBI) aggregated sources.

Safety (1)
Endocrine Disruptors
Potential endocrine disrupting compound
Source: NORMAN Suspect List Exchange
Regulatory (1)
JECFA Number
2278
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Flavouring and nutrient Humectant
Regulatory List Membership (1)
FDA Substances Added to Food (EAFUS)

Expert Verdict

Expert safety assessment and concern-level summary for 3,4-DIHYDROXYBENZOIC ACID.

Regulatory Flags

cosing-sourced eu-permitted needs-enrichment fda_food_additive jecfa_safe

Known Synonyms

Protocatechuic acid BRN 1448841 EINECS 202-760-0 UNII-36R5QJ8L4B 2,4-Dihydroxybenzoate 2,4-Dihydroxybenzoic acid 3,4-Dihydroxybenzoate Protocatehuic acid b-Resorcylate b-Resorcylic acid beta-Resorcylic acid beta-resorcylate

Chemical Function

Humectant Flavouring and nutrient

Regulatory Lists

food_additive; Substances Added to Food (formerly EAFUS) (2/2019)

Cross-Vertical Safety Context

Same-CAS public records found in pharmaceutical data.

SOURCE ChEMBL / DrugCentral / FAERS DB_PHARMA CAS match

Pharmaceutical Data

Same-CAS rows from the pharmaceutical spoke database.

Compound
PROTOCATECHUIC ACID
ChEMBL ID
CHEMBL37537
View full pharmaceutical profile →

Frequently Asked Questions

Is 3,4-DIHYDROXYBENZOIC ACID safe in cosmetics?

3,4-DIHYDROXYBENZOIC ACID has a safety rating of "GOOD" in our database. EU status: permitted.

Is 3,4-DIHYDROXYBENZOIC ACID allowed in the EU?

3,4-DIHYDROXYBENZOIC ACID EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does 3,4-DIHYDROXYBENZOIC ACID do in cosmetics?

3,4-DIHYDROXYBENZOIC ACID functions as: Skin Protecting. It is classified as a cosmetic ingredient in our database. CAS number: 99-50-3.

Is 3,4-DIHYDROXYBENZOIC ACID used outside cosmetics?

3,4-DIHYDROXYBENZOIC ACID also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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(ANGELICA GIGAS/GLYCYRRHIZA URALENSIS/REHMANNIA GLUTINOSA ROOT)/ANGELICA GIGAS STEM/CARTHAMUS TINCTORIUS FLOWER/(CARTHAMUS TINCTORIUS/PRUNUS PERSICA SEED)PORIA COCOS WATER
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(APPLE/CITRUS JUNOS/LENTIL/PEAR/PUMPKIN/STRAWBERRY/TOMATO FRUIT)/CORN KERNEL/(ARCTIUM LAPPA/BRASSICA OLERACEA ACEPHALA/CABBAGE/CAMELLIA SINENSIS/MORINGA OLEIFERA/RADISH/SPINACH LEAF)/(SORGHUM BICOLOR LEAF/STEM)/OAT MEAL/POTATO PULP/(CARROT/NELUMBO NUCIFERA/RADISH/WILD YAM ROOT)/(AMARANTHUS HYPOCHONDRIACUS/CASHEW/CICER ARIETINUM/COIX LACRYMA-JOBI MA-YUEN /MACADAMIA TERNIFOLIA/PHASEOLUS ANGULARIS/PISTACIA VERA/RHYNCHOSIA NULUBILIS/RICE/SESAME/SETARIA ITALICA/SOYBEAN/SWEET ALMOND/WHEAT SEED)/HORDEUM VULGARE SPROUT/CYPERUS ESCULENTUS TUBER/ARTEMISIA PRINCEPS/BROCCOLI/CHENOPODIUM QUINOA/ENTEROMORPHA COMPRESSA/HORDEUM VULGARE/IPOMOEA BATATAS/LAMINARIA JAPONICA/LENTINUS EDODES/PLEUROTUS OSTREATUS/PORPHYRA TENERA/UNDARIA PINNATIFIDA EXTRACT
Good Similar safety
Antioxidant
3,4-Dihydroxybenzoic Acid (Protocatechuic Acid)
Good Chemical family
Antioxidant, skin conditioning
3-Hydroxybenzoic Acid
Moderate Chemical family
Antimicrobial, Skin Conditioning
4-Hydroxybenzoic Acid
Excellent Chemical family
Preservative, pH Balancer

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