Kojic Acid

CAS 501-30-4C6H6O4MW 142.11

Kojic Acid (CAS 501-30-4) — formula C6H6O4, molecular weight 142.11.

Product Overview

CAS Number	501-30-4
Molecular Formula	C6H6O4
Molecular Weight	142.11
Melting Point	153.5
LogP	-0.64

Technical Profile

What this product is

Kojic Acid is a chemical compound with CAS registry number 501-30-4 and molecular formula C6H6O4 (molecular weight 142.11).

Identification

CAS number: 501-30-4

Its molecular formula C6H6O4 comprises 6 C, 6 H, 4 O atoms.

Also known as: Kojic Acid · 曲酸

Frequently Asked Questions

What is the CAS number of Kojic Acid?

The CAS registry number of Kojic Acid is 501-30-4.

What is the molecular formula and molecular weight of Kojic Acid?

Molecular formula C6H6O4, molecular weight 142.11.

What other names is Kojic Acid known by?

It is also registered under: Kojic Acid, 曲酸.

PubChem Public Data

Independent reference data for Kojic Acid (CAS 501-30-4), compiled from public chemistry databases.

Registry identifiers across databases

CAS Registry Number	501-30-4
PubChem CID	3840
Molecular formula	C6H6O4
IUPAC name	5-hydroxy-2-(hydroxymethyl)pyran-4-one
UNII (FDA)	6K23F1TT52

Computed descriptors

Molecular Weight	142.11
XLogP3	-0.9
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	1
Exact Mass	142.02660867
Monoisotopic Mass	142.02660867
Topological Polar Surface Area	66.8
Heavy Atom Count	10

Physicochemical values on record

Melting Point	153.5
Melting Point	153.5 °C
Melting Point	161 °C
LogP	-0.64
LogP	log Kow = -0.64
Dissociation Constants	pKa = 7.66 (approx., at 25 °C)

Documented uses on record

Synonyms and trade names

kojic acid; 501-30-4; 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one; 5-Hydroxy-2-(hydroxymethyl)-4-pyrone; 5-hydroxy-2-(hydroxymethyl)pyran-4-one; 5-Hydroxy-2-hydroxymethyl-4-pyrone; 4H-PYRAN-4-ONE, 5-HYDROXY-2-(HYDROXYMETHYL)-; acido kojico; 2-Hydroxymethyl-5-hydroxy-gamma-pyrone; 2-(Hydroxymethyl)-5-hydroxy-4H-pyran-4-one; DTXSID2040236; CHEBI:43572; 6K23F1TT52; NSC-1942; DTXCID0020236; Beaute

Regulatory listings held on file

Regulatory & Food Contact	CIR / INCI: Cosmetic ingredients (Kojic Acid) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Antioxidant
GHS notification summary	86.2% (69 / 80)

GHS hazard classification

GHS notification summary	86.2% (69 / 80)
Reported hazard statements	H351 (13.8%)

This chemical does not meet GHS hazard criteria for 86.2% (69 of 80) of all reports.

H351 (13.8%): Suspected of causing cancer [Warning Carcinogenicity]

What the public record says

Kojic Acid · CAS 501-30-4 · C6H6O4. UNII 6K23F1TT52. Melting Point: 153.5; Melting Point: 153.5 °C; Melting Point: 161 °C.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.