Molekula
Potassium hydroxide 22% aqueous solution
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
Potassium hydroxide (KOH) is a strong alkaline chemical widely used in pH adjustment, soap manufacturing, and industrial cleaning processes. This 22% aqueous solution provides a stable, ready-to-use form of KOH for applications requiring controlled alkalinity without handling solid pellets. Catalogue details: CAS 1310-58-3, molecular formula KOH, molecular weight 56.11 g/mol, stored at ambient conditions. Hazard classification includes a Signal Word of Danger with corrosive and skin-burning properties. Molekula supplies Potassium hydroxide 22% aqueous solution 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 liquid |
| Density | 1.19 - 1.21g/ml |
| KOH Concentration | 21 - 23% w/v |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90035425 |
| CAS Number | 1310-58-3 |
| IUPAC Name | potassium hydroxide |
| EC Number | 215-181-3 |
| Molecular Formula | KOH |
| Molecular Weight | 56.11 |
| Exact Mass | 55.9664 |
| SMILES | [OH-].[K+] |
| InChIKey | KWYUFKZDYYNOTN-UHFFFAOYSA-M |
| InChI | InChI=1S/K.H2O/h;1H2/q+1;/p-1 |
| PubChem CID | 14797 |
| UN Number | UN1814 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2815.20.0090 |
| Tariff Code | 2815200000 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H290 May be corrosive to metals
- H302 Harmful if swallowed
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P406 Store in a corrosive resistant container with a resistant inner liner
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.
Synonyms
- Caswell No. 693
- Caustic potash
- Cyantek CC 723
- Hydroxyde de potassium
- Kali causticum
- Potash lye
- Potassa
- Potasse caustique
- Potassium hydrate
- Potassium hydroxide (K(OH))
Frequently asked questions
What is a 22% aqueous potassium hydroxide solution commonly used for?
This solution is widely used in pH adjustment, chemical synthesis, food processing (e.g., pet food), and as a strong base in industrial cleaning and degreasing applications.
What is the molecular formula and molecular weight of potassium hydroxide?
The molecular formula is **KOH**, and the molecular weight is **56.11 g/mol**.
How should a 22% aqueous potassium hydroxide solution be stored?
Store in a tightly sealed, corrosion-resistant container at **ambient temperature**, away from moisture and incompatible materials like acids or carbon dioxide.
What grade or purity is available for this potassium hydroxide solution?
Molekula supplies this as a **technical/industrial-grade** aqueous solution at **22% w/w concentration**—suitable for bulk applications requiring high purity.
Can Molekula supply this product in bulk quantities?
Yes, we offer this 22% potassium hydroxide solution in **bulk drums (200L+)** and custom packaging to meet large-scale production needs.
What documentation is provided with an order of this product?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
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.