Industrial chemicals · Taylor, TXTechnical Data Sheet
Potassium Hydroxide 45% Solution Technical Grade
Technical · 45%
- CAS number
- 1310-58-3
- UN number
- UN1814
- Hazard class · packing group
- 8 · PG II
- Structure
Structure · PubChem - Grade
- Technical · 45%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Potassium hydroxide solution
Identity & Composition
- Product Name
- Potassium Hydroxide 45% Solution Technical Grade
- Alliance Code
- potassium-hydroxide-45-solution-technical-grade-caustic-potash-liquid-koh
- Grade
- Technical
- Concentration
- 45%
- CAS Number
- 1310-58-3Adjudicated
- Formula
- HKOAdjudicated
- Molecular Weight
- 56.106Adjudicated
- Product Type
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Chloride (as Cl), ppm | 75 Max. | 8.6 ppm | — | Interpreted |
| Heavy metals (as Pb) | 5 ppm max. | 0.5 ppm | — | Interpreted |
| KCl | 30 ppm max. | 18 ppm | — | Interpreted |
| KOH | 43-47% | 45 % | — | Interpreted |
| Mercury (as Hg), ppm | 0.1 Max. | 0.005 ppm | — | Interpreted |
| Nickel as Ni (ppm by wt.) | 0.25 max | 0.10 ppm | — | Interpreted |
| Potassium carbonate (as K2CO3), % | 0.2 Max. | 0.06 % | — | Interpreted |
| Potassium chlorate as KClO3 (ppm by wt.) | 30 max | 6 ppm | — | Interpreted |
| Sodium | 2500 ppm max. | 1200 ppm | — | Interpreted |
| Potassium sulfate as K2SO4 (ppm by wt.) | 10 max | 3 ppm | — | Interpreted |
| Iron (Fe) | 0.5 ppm max. | 0.25 ppm | EPA-6010B | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade Technical | 45% | — | current | current |
| ACS Reagent | 45% | — | potassium-hydroxide-45-solution-acs-grade | View TDS → |
| Technical | 30% | — | potassium-hydroxide-30-solution-technical-grade | View TDS → |
| Technical | 25% | — | potassium-hydroxide-25-solution-technical-grade-caustic-potash-liquid-koh | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Color | Water White | Interpreted |
| Specific Gravity (20 °C) | 1.4531 | Interpreted |
Strong base — hygroscopic; values may drift in opened containers. See storage guidance.
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| HDPE | Compatible | 45% (w/w) KOH aqueous solution, technical grade; basis is the supplier packaging the 45% solution in an HDPE bottle | media.vwr.com |
Compatibility is drawn from published manufacturer and supplier documentation for this product; each rating is sourced. Confirm against your specific duty cycle before equipment selection.
Materials Selection Tool
Showing 14 of 14 material ratings within the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 40 | Limited service life |
EPDM elastomer | Excellent | 100 | Standard for caustic gaskets. |
Viton (FKM) elastomer | Poor | — | Hydrolyzes in caustic; do not use. |
PTFE fluoropolymer | Excellent | 200 | Universal compatibility. |
304 stainless steel metal | Good | 80 | Acceptable for dilute caustic |
316L Stainless Steel metal | Excellent | 80 | Preferred metal for caustic service. |
Aluminium metal | Not recommended | — | Rapid attack; generates hydrogen |
Carbon Steel metal | Good | 60 | Acceptable below 70 °C; caustic embrittlement risk above. |
Nickel metal | Excellent | 100 | Preferred for high-temperature caustic |
Zinc / galvanized steel metal | Not recommended | — | Rapid corrosion |
HDPE thermoplastic | Excellent | 60 | Standard tote/drum material. |
Polypropylene thermoplastic | Excellent | 80 | Excellent caustic service to 50 %. |
PP thermoplastic | Excellent | 80 | Preferred for elevated temperature |
PVC thermoplastic | Good | 40 | Acceptable for ambient service |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN1814Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIAdjudicated
- Proper Shipping Name
- Potassium hydroxide solutionAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H302, H314Adjudicated
- P-Codes (Precautionary Statements)
- P234, P260, P264, P270, P280, P301+P312+P330, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- 2 mg/m³ ceilingNIOSH Pocket Guide
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: ECHA CLP Annex VI for harmonised classifications, NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Potassium Hydroxide 45% Solution Technical Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Industrial uses of potassium hydroxide: detergents/soaps, dyeing and bleaching, paint and varnish removers, electroplating, photo engraving, lithography, alkaline batteries, analytical chemistry, fuel and gas, thickening agent, organic synthesis, stabilizercorecheminc.com
- Used in a large number of manufacturing processesstore.astm.org
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Cool, dry, well-ventilated area in compatible containers (HDPE, lined steel — not aluminium). Tightly sealed; protect from atmospheric moisture and CO2. Segregate from acids and oxidizers.Class-level guidance — not product-specific; the SDS controls.
- Handling Precautions
- Use full PPE including chemical splash goggles and alkali-resistant gloves. Add base to water slowly with stirring. Highly exothermic dilution.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Acids (violent neutralization), aluminium, zinc, tin (generates hydrogen gas), halogens, organic nitro compounds.Class-level guidance — not product-specific; the SDS controls.
- Shelf Life
- 24 monthsmedia.vwr.comNot stated in the source beyond the product being the 45% (w/w) technical grade solution
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
UN1814, Potassium hydroxide solution, 8, PG II
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.2 | 2026-08-27 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-08-11 | Canonical data updated: 12 fields changed via the provenance/adjudication pipeline.
| canonical_change |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.