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4-Formylbenzoic acid

CAS No.
619-66-9
Chemical Name:
4-Formylbenzoic acid
Synonyms
4-CARBOXYBENZALDEHYDE;Benzoic acid, 4-formyl-;TEREPHTHALALDEHYDIC ACID;4-Formylbenzoic acid Vetec(TM) reagent grade, 97%;4-FormyL;Carboxybenzaldehyde;P-FORMYLBENZOIC ACID;NSC 15797;AKOS BBS-00003246;ForMylbenzoic aci
CBNumber:
CB7702071
Molecular Formula:
C8H6O3
Molecular Weight:
150.13
MDL Number:
MFCD00006951
MOL File:
619-66-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-06 17:03:36
Product description Number Pack Size Price
4-Formylbenzoic acid 97% 124915 10g $68
Terephthalaldehydic acid for synthesis 8.21075 10g $75.1
4-Formylbenzoic acid 97% 124915 25g $112
Terephthalaldehydic Acid >98.0%(T) T0011 25g $55
Terephthalaldehydic Acid >98.0%(T) T0011 100g $161
More product size

4-Formylbenzoic acid Properties

Melting point 247 °C(lit.)
Boiling point 231.65°C (rough estimate)
Density 1.2645 (rough estimate)
bulk density 396kg/m3
refractive index 1.4500 (estimate)
storage temp. Store below +30°C.
solubility DMSO
form Fine Crystalline Powder
pka 3.77(at 25℃)
color Yellow
PH 3.5 (1g/l, H2O, 20℃)
Water Solubility Soluble in water, methanol, DMSO, ether, and chloroform.
Sensitive Air Sensitive
λmax 298nm(Hexane)(lit.)
BRN 471734
InChI 1S/C8H6O3/c9-5-6-1-3-7(4-2-6)8(10)11/h1-5H,(H,10,11)
InChIKey GOUHYARYYWKXHS-UHFFFAOYSA-N
SMILES [H]C(=O)c1ccc(cc1)C(O)=O
CAS DataBase Reference 619-66-9(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII UES4QRK36E
NIST Chemistry Reference Benzoic acid, 4-formyl-(619-66-9)
EPA Substance Registry System Benzoic acid, 4-formyl- (619-66-9)
UNSPSC Code 12352106
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38-33
Safety Statements  26-36-24/25
WGK Germany  3
RTECS  WZ0440000
Hazard Note  Irritant
TSCA  TSCA listed
HS Code  29183000
Storage Class 11 - Combustible Solids
Hazardous Substances Data 619-66-9(Hazardous Substances Data)
REACH Registrations Active
NFPA 704
0
2 0

4-Formylbenzoic acid price More Price(84)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 124915 4-Formylbenzoic acid 97% 619-66-9 10g $68 2026-04-30 Buy
Sigma-Aldrich 8.21075 Terephthalaldehydic acid for synthesis 619-66-9 10g $75.1 2026-04-30 Buy
Sigma-Aldrich 124915 4-Formylbenzoic acid 97% 619-66-9 25g $112 2026-04-30 Buy
TCI Chemical T0011 Terephthalaldehydic Acid >98.0%(T) 619-66-9 25g $55 2026-04-30 Buy
TCI Chemical T0011 Terephthalaldehydic Acid >98.0%(T) 619-66-9 100g $161 2026-04-30 Buy
Product number Packaging Price Buy
124915 10g $68 Buy
8.21075 10g $75.1 Buy
124915 25g $112 Buy
T0011 25g $55 Buy
T0011 100g $161 Buy

4-Formylbenzoic acid Chemical Properties,Uses,Production

Description

4-Formylbenzoic acid, also known as 4-Carboxybenzaldehyde, is a white crystalline powder with a molecular formula of C8H5O3. It is insoluble in water but can be dissolved in DMF. This compound has the ability to undergo esterification reactions and alcohol-aldehyde condensation reactions with alcohols. 4-Formylbenzoic acid is a metabolite of aldehydes. It is an important intermediate for organic synthesis, widely used in medicine, pesticides, coatings, liquid crystal raw materials, polymer materials and perfume raw materials.

Chemical Properties

Yellowish fine crystalline powder

Uses

4-Formylbenzoic acid is usually used as reagent during esterification of 2,2,6,6-tetramethyl-4-oxopiperidinyl-1-oxyl to yield 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl 4-formylbenzoate.

Uses

4-Carboxybenzaldehyde is an important intermediate in the synthesis of terepthalic acid. It has been used as reagent during esterification of 2,2,6,6-tetramethyl-4-oxopiperidinyl-1-oxyl to yield 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl 4-formylbenzoate.

Definition

ChEBI: 4-formylbenzoic acid is a member of the class of benzoic acids that is benzoic acid substituted by a formyl group at position 4. It has a role as a plant metabolite. It is a member of benzaldehydes, a member of benzoic acids and a monocarboxylic acid. It is a conjugate acid of a 4-formylbenzoate.

General Description

4-Formylbenzoic acid is an important intermediate in the synthesis of terepthalic acid. It reacts with barium carbonate to yield two-dimensional barium(II) coordination polymer.

106-42-3
100-21-0
619-66-9
Synthesis of 4-Formylbenzoic acid from P-XYLENE
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View Lastest Price from 4-Formylbenzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Formylbenzoic acid pictures 2026-07-06 4-Formylbenzoic acid
619-66-9
1kg 98% 1000kg Shaanxi Dideu New Materials Co. Ltd
4-Formylbenzoic acid pictures 2026-07-02 4-Formylbenzoic acid
619-66-9
$3.00-9.00 99% ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
4-Formylbenzoic acid pictures 2026-05-28 4-Formylbenzoic acid
619-66-9
$10.70 10kg 99% 10000kg Hebei Chuanghai Biotechnology Co,.LTD
4-formyl-benzoicaci 4-ForMylbenzoic Acid, 97+% To forMyl benzoic acid 4-Formylbenzoic acid, >=98% Terephthalaldehydic Acid 〔p-Carboxybenzaldehyde〕 Methyl 1-(4-tert-Butylphenyl)-4-oxocyclohexanecarboxylate Terephthalaldehydic acid for synthesis TEREPHTHALDEHYDIC ACID RARECHEM AL BO 0196 OTAVA-BB BB7018801956 P-CARBOXYBENZALDEHYDE P-FORMYLBENZOIC ACID P-PHTHALALDEHYDIC ACID 4-FORMYLBENZOIC ACID 4-Formylbenzoic acid~Terephthalaldehydic acid Carboxybenzaldehyde Benzoic acid, 4-formyl- (9CI) 4-Carboxybenzaldehyde 98% AKOS BBS-00003246 BENZALDEHYDE-4-CARBOXYLIC ACID p-Eormylbenzoicacid terephthalaldehydeacid 4-Carboxybenzaldehyde, 96% 100GR 4-Carboxybenzaldehyde, 96% 25GR 4-Carboxybenzaldehyde, 96% 5GR 4-Carboxylbenzaldehyde NSC 15797 p-Benzoic Acid Aldehyde 4-Carboxybenzaldehyde 4-Formylbenzoic Acid ForMylbenzoic aci 4-carboxybenzaladehyde PARA-CARBOXYBENZALDEHYDE 4-Carboxybenzaldehyde, Benzaldehyde-4-carboxylic acid, Terephthalaldehydic acid 4-Carboxybenzaldehyde,96% 4-Carboxybenzaldehyde ,97% Of forMyl benzoic acid Benzaldehydep-carboxylic acid 4-Carboxybenzaldehyde, 97%, for synthesis Terephthalaldehydic Acid > 4-Formylbenzoesure P-aldehyde benzoic acid Para aldehyde benzoic acid 4-Formylbenzoic acid, 10 mM in DMSO 4-CARBOXYBENZALDEHYDE 4-Formylbenzoic acid Vetec(TM) reagent grade, 97% 4-FormyL Benzoic acid, 4-formyl- TEREPHTHALALDEHYDIC ACID 619-66-9 Organic Building Blocks CARBOXYLIC ACID Building Blocks Aldehydes Carbonyl Compounds C8 Aromatics, Metabolites & Impurities CARBOXYLICACID FINE Chemical & INTERMEDIATES