Industrial chemicals · Taylor, TXTechnical Data Sheet
Technical Data Sheet
Potassium Hydroxide Flakes ACS Grade
ACS Grade · 86.8%
- CAS番号
- 1310-58-3
- UN番号
- UN1813
- 危険有害性クラス・容器等級
- 8 · PG II
- 構造
構造・PubChem - グレード
- ACS Grade · 86.8%
- 注意喚起語
- Danger
- 危険有害性
- 正式輸送品名
- Potassium hydroxide, solid
Last reviewed 2026-06-18 by Andre Taki, Chief Commercial Officer.
Identity & Composition
- 製品名
- Potassium Hydroxide Flakes ACS Grade
- Alliance Code
- potassium-hydroxide-flakes-acs-grade
- グレード
- ACS Grade
- 濃度
- 86.8%
- CAS番号
- 1310-58-3PubChem
- 化学式
- —PubChem
- 分子量
- —PubChem
- 製品種別
- Pure substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (KOH) | >/= 85% KOH | Passes test | — | Interpreted |
| Calcium (Ca) | Max 0.005% | 0.00037 % | — | Interpreted |
| Chloride (Cl) | Max 0.01% | 0.0016 % | — | Interpreted |
| Heavy metals | Max 0.001% | 0.00010 % | ICP-OES | Interpreted |
| Iron (Fe) | ≤0.001 % | 0.00014 % | — | Interpreted |
| Magnesium (Mg) | Max 0.002% | 0.00012 % | — | Interpreted |
| Nickel (Ni) | Max 0.001% | 0.00015 % | — | Interpreted |
| Nitrogen compounds (as N) | Max 0.001% | 0.00012 % | — | Interpreted |
| Phosphate (PO4) | Max 5 ppm | 0.36 ppm | — | Interpreted |
| Sodium (Na) | Max 0.05% | 0.014 % | — | Interpreted |
| Sulfate (SO4) | Max 0.003% | 0.00028 % | — | Interpreted |
| Potassium carbonate (K2CO3) | </= 2.0% | Passes test | — | Interpreted |
| Ammonium hydroxide precipitate | Max 0.02% | 0.0017 % | Gravimetric — NH4OH precipitation and ignition | Interpreted |
| carbonates | 1 % max | 0.22 % | — | 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.
物理的及び化学的性質
| Property | 値 | Source |
|---|---|---|
| 外観 | White, crystalline hygroscopic flakes | Adjudicated |
| 形状 | Solid | Published reference |
| 臭い | Odorless | Adjudicated |
| pH | 13.5–14 (0.1 M to 10% solution) | Adjudicated |
| 比重 | 2.04 (water = 1) | Adjudicated |
| 密度 | 1.45 to 1.50 at 68 °F (USCG, 1999) | Published reference |
| 沸点 | 1,320–1,327 °C (2,408–2,421 °F) | Adjudicated |
| 融点 | 360–406 °C (680–763 °F), depending on water content | Adjudicated |
| 引火点 | 該当しない | Adjudicated |
| 蒸気圧 | Negligible at 20 °C (1 mmHg at 719 °C) | Adjudicated |
| Solubility (water) | Very soluble in water, about 1,120–1,210 g/L at 20–25 °C (strongly exothermic); soluble in alcohol and glycerin | Adjudicated |
Strong base — hygroscopic; values may drift in opened containers. See storage guidance.
Materials of ConstructionService envelope ≈ 86.8%
| Material | Rating | Max T (°C) | Notes | Source |
|---|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 40 | Limited service life | Cole-Parmer Chemical Compatibility |
EPDM elastomer | Excellent | 90 | Preferred elastomer | Cole-Parmer Chemical Compatibility |
Viton (FKM) elastomer | Poor | — | Not recommended above 25% | Cole-Parmer Chemical Compatibility |
PTFE fluoropolymer | Excellent | 200 | Universal compatibility. | Cole-Parmer Chemical Compatibility |
304 stainless steel metal | Good | 80 | Acceptable for dilute caustic | Cole-Parmer Chemical Compatibility |
316 stainless steel metal | Excellent | 95 | Standard caustic service | Cole-Parmer Chemical Compatibility |
Aluminium metal | Not recommended | — | Rapid attack; generates hydrogen | Cole-Parmer Chemical Compatibility |
Carbon steel metal | Good | 50 | Acceptable to 50 °C; caustic embrittlement above | Cole-Parmer Chemical Compatibility |
Nickel metal | Excellent | 100 | Preferred for high-temperature caustic | Cole-Parmer Chemical Compatibility |
Zinc / galvanized steel metal | Not recommended | — | Rapid corrosion | Cole-Parmer Chemical Compatibility |
HDPE thermoplastic | Excellent | 60 | Standard drum / IBC material | Cole-Parmer Chemical Compatibility |
PP thermoplastic | Excellent | 80 | Preferred for elevated temperature | Cole-Parmer Chemical Compatibility |
PVC thermoplastic | Good | 40 | Acceptable for ambient service | Cole-Parmer Chemical Compatibility |
Ratings reflect the service envelope (concentration × temperature) shown. Always confirm against your specific duty cycle and contact-time before equipment selection. The most cautious rating across overlapping references is shown.
Materials Selection Tool
Showing 13 of 13 material ratings within the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Fair | 40 | Limited service life |
EPDM elastomer | Excellent | 90 | Preferred elastomer |
Viton (FKM) elastomer | Poor | — | Not recommended above 25% |
PTFE fluoropolymer | Excellent | 200 | Universal compatibility. |
304 stainless steel metal | Good | 80 | Acceptable for dilute caustic |
316 stainless steel metal | Excellent | 95 | Standard caustic service |
Aluminium metal | Not recommended | — | Rapid attack; generates hydrogen |
Carbon steel metal | Good | 50 | Acceptable to 50 °C; caustic embrittlement above |
Nickel metal | Excellent | 100 | Preferred for high-temperature caustic |
Zinc / galvanized steel metal | Not recommended | — | Rapid corrosion |
HDPE thermoplastic | Excellent | 60 | Standard drum / IBC material |
PP thermoplastic | Excellent | 80 | Preferred for elevated temperature |
PVC thermoplastic | Good | 40 | Acceptable for ambient service |
Regulatory & Transport
DOT / 49 CFR
- 国連番号
- UN181349 CFR 172.101
- 危険有害性クラス
- 8Adjudicated
- 容器等級
- IIAdjudicated
- 正式輸送品名
- Potassium hydroxide, solidAdjudicated
GHS / OSHA HCS 2024
- 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, P390, P405, P406, P501Adjudicated
許容濃度
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- 2 mg/m³ CeilingAdjudicated
- NIOSH REL
- 2 mg/m³ CeilingAdjudicated
- NIOSH IDLH
- —no canonical
輸送情報は発行時点の49 CFR 172.101の照会結果を反映しています。データ出典：REL/IDLHはNIOSH Pocket Guide、PELはOSHA Zテーブル。出荷に関わる重要な判断の前に、必ず最新の規制本文で確認してください。
Health & Fire Hazard
Acute Toxicology
- LD₅₀ Oral (rat)
- 214–333 mg/kg (rat), the basis for H302Adjudicated
急性毒性値はSDS第11項またはNIOSH RTECSによる。
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 Flakes ACS 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
- 乾燥した場所に密閉して保管すること — フレークは空気中の水分および二酸化炭素を吸収する。鋼、ポリエチレンまたはポリプロピレン製の容器を使用し、アルミニウムや亜鉛メッキ金属は絶対に使用しないこと。酸類から遠ざけること。Adjudicated
- 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
- 大量の水（激しい発熱）；酸類（激しい反応）；アルミニウム、亜鉛、スズ、銅、マグネシウム及びそれらの合金（可燃性水素を発生）；ニトロ化合物；有機物；ハロゲン化合物。Adjudicated
- 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)
UN1813, Potassium hydroxide, solid, 8, PG II
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
NMFC Class
60
Placard
Corrosive
容器等級
PG II
Revision History
Last reviewed 2026-06-18 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.6 | 2026-10-08 | Canonical data updated: 20 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-10-07 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-09-30 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-08-05 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-06-18 | Canonical data re-verified: 3 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
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.