Industrial chemicals · Taylor, TXTechnical Data Sheet
Potassium Hydroxide 25% Solution Technical Grade
Technical · 25%
- CAS number
- 1310-58-3
- UN number
- UN1814
- Hazard class · packing group
- 8 · PG II
- Structure
Structure · PubChem - Grade
- Technical · 25%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Potassium hydroxide solution
Identity & Composition
- 製品名
- Potassium Hydroxide 25% Solution Technical Grade
- Alliance Code
- potassium-hydroxide-25-solution-technical-grade-caustic-potash-liquid-koh
- Grade
- Technical
- 濃度
- 25%
- CAS番号
- 1310-58-3Adjudicated
- 化学式
- HKOAdjudicated
- 分子量
- 56.106Adjudicated
- 製品種別
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (KOH) | ≥23.75 to ≤26.25% | 25.00 % | — | Interpreted |
| Chloride (as Cl) | 42 ppm Max. | 4.8 ppm | — | Interpreted |
| Iron (as Fe) | 2.5 ppm Max. | 0.14 ppm | — | Interpreted |
| Mercury (as Hg) | 0.06 ppm Max. | 0.005 ppm | — | Interpreted |
| Potassium carbonate (as K2CO3) | 0.11 % Max. | 0.033 % | — | Interpreted |
| Sodium (as Na) | 1400 ppm Max. | 670 ppm | Flame AAS / ICP-OES | Interpreted |
| Sulfate (as K2SO4) | 6 ppm Max. | 1.7 ppm | Turbidimetric (BaCl2) | Interpreted |
| Heavy metals (as Pb) | 2.5 ppm Max. | 0.28 ppm | Colorimetric sulfide comparison | 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 | 濃度 | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade Technical | 25% | — | current | current |
| ACS Reagent | 45% | — | potassium-hydroxide-45-solution-acs-grade | View TDS → |
| Technical | 45% | — | potassium-hydroxide-45-solution-technical-grade-caustic-potash-liquid-koh | View TDS → |
| Technical | 30% | — | potassium-hydroxide-30-solution-technical-grade | 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 | 値 | Source |
|---|---|---|
| Density | 1.24 g/ml at 20ºC | Interpreted |
Strong base — hygroscopic; values may drift in opened containers. See storage guidance.
Materials of Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| metal containers | Not recommended | 25% KOH solution | rcilabscan.com |
| nitrile rubber (glove material) | Compatible | 25% KOH solution; full contact and splash contact glove material | rcilabscan.com |
| corrosion-resistant container with a resistant inner liner | Compatible | 25% potassium hydroxide solution; storage | rcilabscan.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 15 of 15 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. |
Borosilicate Glass glass ceramic | Fair | 25 | Attacked above 30 % or elevated temp; avoid long-term service. |
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
- 注意喚起語
- 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
許容濃度
- 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 25% 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
- Chemical for analysis and productionrcilabscan.com
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
- Keep tightly closed in a dry, cool and well-ventilated place. Keep out of direct sunlight and away from heat, water and incompatible materials. No metal containers; store in a corrosive-resistant container with a resistant inner liner.rcilabscan.com
- 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
- heat, water, direct sunlight, metal containersrcilabscan.com
- Shelf Life
- Consult Technical Services for product-specific shelf life
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.