Hydroquinone, 99%

Name: Hydroquinone, 99%
Brand: Vaqora Chemicals
SKU: VQ-003836

About Hydroquinone, 99%

Hydroquinone is a natural product (Synthesis grade) carrying the CAS registry number 123-31-9 with a typical assay of 99%. With the molecular formula C6H6O2, it has a molar mass of 110.11 g/mol. Systematically, it is named benzene-1,4-diol. Common synonyms include 1,4-Benzenediol and 1,4-Dihydroxybenzene.

The material typically appears as a colourless crystalline powder to powder. Literature values give a melting point of 172-175 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for phytochemical research, natural product screening and nutraceutical R and D. It is used across academic and industrial research and diagnostics and biotechnology.

Vaqora Chemicals supplies Hydroquinone in 100 g, 500 g, 5 kg and 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Phytochemical research
Natural product screening
Nutraceutical R&D

Industries

Specifications & identifiers

Chemical identifiers
Product name	Hydroquinone, 99%
Catalogue No.	VQ-003836
CAS Number	123-31-9
IUPAC name	benzene-1,4-diol
Molecular formula	C₆H₆O₂
Molecular weight	110.11 g/mol
Exact mass	110.0368
Grade	Synthesis
Purity / assay	99%
HSN code	29072200
InChIKey	QIGBRXMKCJKVMJ-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1O)O
PubChem CID	785

Physical properties
Physical form	Powder
Appearance	Colourless crystalline powder to powder
Melting point	172-175 °C
LogP (XLogP3)	0.6
H-bond donors / acceptors	2 / 2
TPSA	40.5 Å²
Synonyms	1,4-Benzenediol, 1,4-Dihydroxybenzene, Quinol, p-Hydroquinone, p-Hydroxyphenol, p-Benzenediol, p-Dihydroxybenzene, 4-Hydroxyphenol, hydroquinol, Benzoquinol, Eldoquin, Phiaquin

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H317May cause an allergic skin reaction
H318Causes serious eye damage
H341Suspected of causing genetic defects
H351Suspected of causing cancer
H400Very toxic to aquatic life

Precautionary statements: P203, P261, P264, P264 + P265, P270, P272, P273, P280, P301 + P317, P302 + P352, P305 + P354 + P338, P317, P318, P321, P330, P333 + P317, P362 + P364, P391, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 123-31-9

AR

Hydroquinone, GR 99%+

CAS: 123-31-9
Formula: C₆H₆O₂
MW: 110.11 g/mol

VQ-003837

USP / AR

Hydroquinone, USP, AR

CAS: 123-31-9
Formula: C₆H₆O₂
MW: 110.11 g/mol

VQ-047247

Frequently asked questions

What is the CAS number of Hydroquinone, 99%?

The CAS Registry Number of Hydroquinone, 99% is 123-31-9. It is also known as 1,4-Benzenediol, 1,4-Dihydroxybenzene, Quinol.

What is the molecular formula and molecular weight of Hydroquinone, 99%?

Hydroquinone, 99% has the molecular formula C6H6O2 and a molecular weight of 110.11 g/mol. Its IUPAC name is benzene-1,4-diol.

Which grade and pack sizes of Hydroquinone, 99% can I order?

We supply Hydroquinone, 99% in Synthesis (99%) grade, in 100 g, 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Hydroquinone, 99%?

Yes. Every lot of Hydroquinone, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Hydroquinone, 99% be shipped internationally?

Yes. Hydroquinone, 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.