CAS 123-31-9: Hydroquinone

Description:Hydroquinone, with the CAS number 123-31-9, is an organic compound characterized by its aromatic structure, specifically a dihydroxybenzene derivative. It appears as a white crystalline solid and is soluble in water, alcohol, and ether. Hydroquinone is known for its reducing properties and is commonly used as a photographic developer, antioxidant in various applications, and a skin-lightening agent in cosmetics due to its ability to inhibit melanin production. It has a melting point around room temperature and exhibits a slightly sweet taste. Hydroquinone can undergo oxidation to form benzoquinone, which is a more reactive compound. While it is generally considered safe in low concentrations, prolonged exposure or high doses can lead to skin irritation and other health concerns, prompting regulatory scrutiny in some regions. Its use in cosmetic formulations is often subject to concentration limits to mitigate potential adverse effects. Overall, hydroquinone is a versatile compound with significant applications in both industrial and cosmetic fields.

Formula:C₆H₆O₂

InChI:InChI=1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H

InChI key:InChIKey=QIGBRXMKCJKVMJ-UHFFFAOYSA-N

SMILES:OC1=CC=C(O)C=C1

Synonyms:
1,4-Benzenediol
1,4-Benzoquinol
1,4-Dihydroxy benzene
1,4-Dihydroxy-benzol
1,4-Dihydroxybenzene
1,4-Phenylenediol
1,4-p-Benzenediol
4-Hydroxyphenol
6,7-dihydroxy-2H-chromen-2-one
Aida
See more synonyms
Arctuvin
Benzene, 1,4-Dihydroxy-
Benzene-1,4-Diol
Benzohydroquinone
Benzoquinol
Black & White Bleaching Cream
Bq(H)
Diak 5
Dihydroquinone
Eldopacque
Eldopaque
Eldopaque Forte
Eldoquin
Eldoquin Forte
He 5
Hidroquinona
Hydrochinon
Hydroquinol
Hydroxyquinone
Nsc 9247
P-Dihydroxybenzene
P-Hydroxyphenol
Phiaquin
Quinol
Solaquin Forte
Solution Q
Tecquinol
Tenox HQ
p-Benzenediol
p-Dihydroquinone
p-Dioxybenzene
p-Hydroquinone
p-Phenylenediol
p-Quinol
Hydroquinone

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Product data	Purity	Price range	Estimated delivery
Hydroquinone REF: 3B-H0186CAS: 123-31-9	>99.0%(T)	27.00 €~52.00 €	Thu 10 Apr 25
Hydroquinone, 99% REF: 02-A11411CAS: 123-31-9	99%	46.00 €~385.00 €	Fri 11 Apr 25
Hydroquinone REF: 10-F146000CAS: 123-31-9	99.0%	44.00 €~84.00 €	Tue 15 Apr 25
Hydroquinone REF: 47-1206CAS: 123-31-9	99.7%	242.00 €	Tue 15 Apr 25
Phenindione REF: 47-1208CAS: 123-31-9	97.3%	242.00 €	Tue 15 Apr 25
Hydroquinone REF: 45-1324002CAS: 123-31-9	- - -	447.00 €	Wed 16 Apr 25
Hydroquinone, USP grade REF: 7W-GK9119CAS: 123-31-9	99.0 - 100.5 % (anhydrous basis)	To inquire	Mon 21 Apr 25
Hydroquinone REF: 4Z-H-1612CAS: 123-31-9	- - -	To inquire	Mon 21 Apr 25
Hydroquinone REF: 7W-GK0341CAS: 123-31-9	(HPLC) ≥ 99.5% (dried basis)	23.00 €~74.00 €	Mon 21 Apr 25
Hydroquinone REF: 54-OR97827CAS: 123-31-9	- - -	To inquire	Mon 21 Apr 25
4-Vinylpyridine, 95%, stabilized REF: AC-14091CAS: 100-43-6 123-31-9	95%	To inquire	Tue 22 Apr 25
o-Tolualdehyde, 98%, stabilized REF: AC-15243CAS: 123-31-9 529-20-4	98%	To inquire	Tue 22 Apr 25
4-Methoxyphenol, 99% REF: AC-12600CAS: 123-31-9 150-76-5	99%	To inquire	Tue 22 Apr 25
2-Methylfuran, 99%, stabilized REF: AC-12683CAS: 123-31-9 534-22-5	99%	37.00 €~121.00 €	Tue 22 Apr 25
2,3,4,5,6-Pentafluorostyrene, 97%, stabilized REF: AC-18847CAS: 123-31-9 653-34-9	97%	To inquire	Tue 22 Apr 25
Hydroquinone, 99% REF: AC-12091CAS: 123-31-9	99%	59.00 €~484.00 €	Tue 22 Apr 25
Hydroquinone, 99.5% REF: AC-21993CAS: 123-31-9	99.5%	To inquire	Tue 22 Apr 25
Benzene-1,4-diol (Hydroquinone) REF: 86-MM0632.01-0250CAS: 123-31-9	- - -	744.00 €	Tue 22 Apr 25
m-Tolualdehyde, 98%, stabilized REF: AC-13899CAS: 123-31-9 620-23-5	98%	To inquire	Tue 22 Apr 25
EPA Method 8270 Organochlorine Pesticides Mixture 1000 µg/mL in Methyl tert-butyl ether REF: 04-GA09000427MBCAS: 1024-57-3 1031-07-8 123-31-9 309-00-2 319-84-6 319-85-7 319-86-8 33213-65-9 50-29-3 5103-71-9 5103-74-2 53494-70-5 58-89-9 60-57-1 72-20-8 72-43-5 72-54-8 72-55-9 7421-93-4 76-44-8 959-98-8	- - -	To inquire	Tue 22 Apr 25