Molekula
Hydroquinone sulfonic acid potassium salt
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 sulfonic acid potassium salt is a water-soluble compound used in organic synthesis and as a reducing agent in chemical processes. It is available in powder form with a molecular weight of 228.27 g/mol, a molecular formula of C6H5KO5S, and a CAS number of 21799-87-1. Store at ambient temperatures. This product carries a warning signal word due to potential hazards. Molekula supplies Hydroquinone sulfonic acid potassium salt 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
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.
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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
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500 g — £124.20 per pack ex VAT · £149.04 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 | white crystalline powder |
| Assay | ≥ 98% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 38051919 |
| CAS Number | 21799-87-1 |
| IUPAC Name | potassium 2,5-dihydroxybenzenesulfonate |
| EC Number | 244-584-7 |
| Molecular Formula | C6H5KO5S |
| Molecular Weight | 228.27 |
| Exact Mass | 227.9495 |
| SMILES | C1=CC(=C(C=C1O)S(=O)(=O)[O-])O.[K+] |
| InChIKey | VKDSBABHIXQFKH-UHFFFAOYSA-M |
| InChI | InChI=1S/C6H6O5S.K/c7-4-1-2-5(8)6(3-4)12(9,10)11;/h1-3,7-8H,(H,9,10,11);/q;+1/p-1 |
| PubChem CID | 23672329 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2908.99.03.00 |
| Tariff Code | 2908990000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- 2,5-Dihydroxybenzenesulfonic acid potassium salt
- 2,5-Dihydroxybenzenesulfonic acid, monopotassium salt
- Benzenesulfonic acid, 2,5-dihydroxy-, monopotassium salt
- Benzenesulfonic acid, 2,5-dihydroxy-, potassium salt (1:1)
- potassium 2,5-dihydroxybenzene-1-sulfonate
- Potassium 2,5-dihydroxybenzenesulfonate
- Potassium 2,5-dihydroxybenzenesulphonate
- Potassium dobesilate
- Potassium Hydroquinonesulfonate
- VKDSBABHIXQFKH-UHFFFAOYSA-M
Frequently asked questions
What is hydroquinone sulfonic acid potassium salt used for?
It is primarily used as a reducing agent in chemical synthesis and as an intermediate in the production of dyes and pharmaceuticals.
What is the chemical formula and molecular weight?
The formula is C6H5KO5S with a molecular weight of 228.27 g/mol.
How should hydroquinone sulfonic acid potassium salt be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available?
Available in technical grade; custom purity levels may be requested.
Can Molekula supply it in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for pricing and lead times.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.