Molekula
Hydroquinone (20% in Diethylene glycol monobutyl ether)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Hydroquinone (20% in Diethylene glycol monobutyl ether) is a skin-lightening and antioxidant agent commonly used in cosmetics, pharmaceuticals, and chemical synthesis to inhibit oxidation and discoloration. Its main industrial roles are as a developing agent for black-and-white photographic, X-ray and lithographic films, an intermediate for rubber antioxidants, and a polymerization inhibitor for vinyl monomers. This solution provides controlled solubility and stability for industrial and research applications. CAS 123-31-9, molecular formula C6H4(OH)2, molecular weight 110.11 g/mol. Store at ambient conditions. Hazard classification includes a Signal Word of Danger due to potential health risks.
Molekula supplies Hydroquinone (20% in Diethylene glycol monobutyl ether) at 19.5-20.5% purity (Mass Balance) in 100 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and a safety data sheet is available. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless to yellow liquid |
| Assay (Mass Balance) | 19.5-20.5% |
| Hydroquinone Assay (Solid) | 99.5% min |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90025011 |
| CAS Number | 123-31-9 |
| IUPAC Name | benzene-1,4-diol |
| EC Number | 204-617-8 |
| Molecular Formula | C6H4(OH)2 |
| Molecular Weight | 110.11 |
| Exact Mass | 110.0368 |
| SMILES | C1=CC(=CC=C1O)O |
| InChIKey | QIGBRXMKCJKVMJ-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H6O2/c7-5-1-2-6(8)4-3-5/h1-4,7-8H |
| PubChem CID | 785 |
| UN Number | UN3082 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2907.22.5000 |
| Tariff Code | 2907220090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- H341 Suspected of causing genetic defects
- H351 Suspected of causing cancer
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P410 Protect from sunlight
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,4-benzenediol
- 1,4-Dihydroxybenzene
- 4-Hydroxyphenol
- Benzene-1,4-diol
- hydroquinol
- p-Benzenediol
- p-Dihydroxybenzene
- p-Hydroquinone
- p-Hydroxyphenol
- Quinol
Frequently asked questions
What is Hydroquinone (20% in Diethylene glycol monobutyl ether) commonly used for?
This solution is primarily used as a skin-lightening agent in cosmetic formulations, as well as a polymerization inhibitor in organic synthesis and industrial applications.
What is the chemical formula and molecular weight of Hydroquinone?
The formula is C₆H₄(OH)₂, and the molecular weight is 110.11 g/mol (pure Hydroquinone; the solution’s effective concentration is 20% w/w).
How should this product be stored?
Store in a cool, dry place at ambient temperature, tightly sealed, and protected from light to prevent degradation.
What grade or purity level is available for this Hydroquinone solution?
This product is supplied as a 20% solution in Diethylene glycol monobutyl ether, specified as a clear colourless to yellow liquid with an assay (mass balance) of 19.5-20.5%, prepared from hydroquinone with a solid assay of 99.5% min, suitable for cosmetic and industrial applications requiring consistent formulation.
Can Molekula supply this Hydroquinone solution in bulk quantities?
Yes, we offer bulk packaging options (e.g., 5kg–200kg drums or IBCs) for large-scale production—please contact us for pricing and lead times.
What documentation is provided with each order of this product?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability and compliance.
Where can I buy Hydroquinone (20% in Diethylene glycol monobutyl ether)?
Directly from Molekula, which lists Hydroquinone (20% in Diethylene glycol monobutyl ether) in 100 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is Hydroquinone (20% in Diethylene glycol monobutyl ether) dangerous goods for shipping?
Yes. Hydroquinone (20% in Diethylene glycol monobutyl ether) ships as dangerous goods: UN3082, class 9, packing group III.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.