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 2000 · 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) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
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.
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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
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Corrosive
GHS05
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
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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.
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 **technical/industrial-grade solution (20% w/w in Diethylene glycol monobutyl ether)**, 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.
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.