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B21809 Croconic acid, 98%

CAS Number

Stock No. Size Price ($) Quantity Availability
B21809-03 1g 172.00
B21809-06 5g 653.00
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Croconic acid, 98%


Chemical Properties

Formula Weight
Melting point
ca 280° dec.
Storage & Sensitivity
Ambient temperatures.
Soluble in water and ethanol.


Croconic acid is used to prepare 1,3-bis-(2-dimethylamino-5-thienyl)croconine by reacting with dimethyl-thiophen-2-yl-amine. It is also used in organic synthesis and employed as a dye for biological research purposes. Further, it is involved in the preparation of ethers such as dimethyl croconate. In addition to this, it acts as a ligand and form coordination complexes with metals such as barium, copper, silver and lead.


Light sensitive. Incompatible with strong oxidizing agents.

Literature References

Hooper, J.; Kunkel, D. A.; Zurek, E.; Enders, A. Interplay between Hydrogen Bonding, Epitaxy, and Charge Transfer in the Self-Assembly of Croconic Acid on Au(111) and Ag(111). J. Phys. Chem. C 2015, 119 (47), 26429-26437.

Mukhopadhyay, S.; Gutmann, M.; Alonso, F. F. Hydrogen-bond structure and anharmonicity in croconic acid. Phys. Chem. Chem. Phys. 2014, 16 (47), 26234-26239.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Harmonized Tariff Code


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