Potassium hydroxide
High-quality chemical supplied by Jinan Shenghe Chemical Co., Ltd. Competitive pricing, reliable delivery, and full technical support for B2B buyers worldwide.
Specifications
| Molecular Formula | KOH |
|---|---|
| Molecular Weight | 57.113 |
| Melting Point | 360℃ |
| Water Solubility | soluble |
Detailed Chemical Properties & Synonyms
Physical & Chemical Properties
性状白色斜方结晶，工业品为白色或淡灰色的块状或棒状。 熔点360.4℃ 沸点1320~1324℃ 相对密度2.044(20℃) 溶解性易溶于水，溶于乙醇，微溶于醚。
Applications / Uses
化工基本原料，用于医药、日用化工等。
Description
Potassium hydroxide is identified by CAS 1310-58-3, molecular formula KOH and molecular weight 55.97 g/mol. UNII WZH3C48M4T; ChEBI 32035; InChIKey KWYUFKZDYYNOTN-UHFFFAOYSA-M. Boiling Point: 2408 °F at 760 mmHg (NTP, 1992); Boiling Point: 1,320; Boiling Point: 1327 °C.
Identification
| CAS Registry Number | 1310-58-3 |
|---|---|
| PubChem CID | 14797 |
| Molecular formula | KOH |
| Molecular weight | 55.97 g/mol |
| IUPAC name | potassium hydroxide |
| InChIKey | KWYUFKZDYYNOTN-UHFFFAOYSA-M |
| UNII (FDA) | WZH3C48M4T |
| ChEBI ID | CHEBI:32035 |
Computed Descriptors
| Molecular Weight | 56.106 |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 55.96644614 |
| Monoisotopic Mass | 55.96644614 |
| Topological Polar Surface Area | 1 |
| Heavy Atom Count | 2 |
| Formal Charge | 0 |
| Complexity | 2 |
Physical & Chemical Properties
| Boiling Point | 2408 °F at 760 mmHg (NTP, 1992) |
|---|---|
| Boiling Point | 1,320 |
| Boiling Point | 1327 °C |
| Boiling Point | 1324 °C |
| Boiling Point | 2408 °F |
| Boiling Point | 1327 °C @760 [mm Hg] |
| Boiling Point | 2415 °F |
| Melting Point | 405 |
| Melting Point | Melting point: 406 °C |
| Melting Point | 380 °C |
Physical description & handling notes
- Potassium hydroxide, solution appears as an clear aqueous solution. Corrosive to metals and tissue. Noncombustible. Used in chemical manufacturing, petroleum refining, cleaning compounds.
- Potassium hydroxide, [dry solid, flake, bead, or granular] appears as a white solid. Corrosive to metals and tissue. Used in soap manufacture, bleach, as an electrolyte in alkaline batteries, and as a food additive.
- Liquid; Dry Powder; Liquid; Liquid; Other Solid; Dry Powder; Large Crystals; Large Crystals; CBI; Dry Powder; Other Solid
- White or nearly white pellets, flakes, sticks, fused masses or other forms
- Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.]; [NIOSH]
- WHITE HYGROSCOPIC SOLID IN VARIOUS FORMS.
Regulatory Status
| Regulatory & Food Contact | FDA Substance added to food: FORMULATION AID, FUMIGANT, PH CONTROL AGENT, PROCESSING AID, STABILIZER OR THICK FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ACIDITY_REGULATOR: Food Additives FORMULATION AID, FUMIGANT, PH CONTROL AGENT, PROCESSING AID, STABILIZER OR THICKENER, WASHING OR SURFACE REMOV NOT LIMITED NMRS 40/TRS 339-JECFA 9/16 |
|---|---|
| GHS notification summary | 0.1% (3 / 4709) |
GHS Hazard Classification
| GHS notification summary | 0.1% (3 / 4709) |
|---|---|
| Reported hazard statements | H302, H314, H290 (20.9%), H318 (24.7%), H301, H304, H370, H372 |
H302: Harmful if swallowed [Warning Acute toxicity, oral]
H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
Documented Uses
- CIR ingredient: Potassium Hydroxide
- Used to make liquid soaps; it is also used in paint, varnish removers, and drain cleaners; it is used in electroplating, photoengraving, and lithography. [ACGIH] Used as a wet etchant in semiconductor manufacturing at standard concentrations of 50% or 10%; [CSH, p. 46]
- Acid and Alkali Cleaning of Metals [Category: Clean]
- Electroplating [Category: Plate]
- Semiconductor Manufacturing [Category: Industry]
- Battery Manufacturing [Category: Industry]
Synonyms
POTASSIUM HYDROXIDE; 1310-58-3; Caustic potash; Potash lye; Potassium hydrate; Hydroxyde de potassium; Potassa; Potasse caustique; Caustic-potash; Kali causticum; Caswell No. 693; Cyantek CC 723; Potassium hydroxide (K(OH)); Kaliumhydroxid; CCRIS 6569; Potassio (idrossido di)
Frequently Asked Questions
What are the CAS number and molecular formula of Potassium hydroxide?
CAS 1310-58-3; molecular formula KOH; molecular weight 55.97 g/mol.
What other names is Potassium hydroxide known by?
POTASSIUM HYDROXIDE, 1310-58-3, Caustic potash, Potash lye, Potassium hydrate, Hydroxyde de potassium.
What is the regulatory status of Potassium hydroxide?
Documented regulatory listings: FDA Substance added to food: FORMULATION AID, FUMIGANT, PH CONTROL AGENT, PROCESSING AID, STABILIZER OR THICK; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; ACIDITY_REGULATOR: Food Additives.
Is Potassium hydroxide classified as hazardous?
0.1% of GHS notifications report no hazard classification (3 of 4709).
What are the key physical properties of Potassium hydroxide?
Boiling Point: 2408 °F at 760 mmHg (NTP, 1992); Boiling Point: 1,320; Boiling Point: 1327 °C; Boiling Point: 1324 °C.
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.
Applications
化工基本原料，用于医药、日用化工等。
Packaging & Shipping
- Standard: 25 kg fiber drum / 200 kg steel drum with double PE liner
- Small pack: 1 kg / 5 kg aluminum foil bag for lab & sample
- Custom: packaging size and labeling per customer requirement
- Lead time: in-stock items ship within 3-5 business days
- Documents: COA, MSDS / SDS, TDS provided with every shipment
- Global: air, sea (FCL / LCL) and express to 80+ countries
Storage & Handling
Store in a cool, dry, well-ventilated place away from heat, direct sunlight and incompatible materials. Keep container tightly closed. Use appropriate personal protective equipment and refer to the SDS for full safety guidance before handling.
Frequently Asked Questions
Yes. A batch-specific COA and free or charged sample are available on request before bulk ordering.
Yes. We offer custom grade, particle size and purity adjustment based on your application and order volume.
MOQ depends on the product; small quantities are supported for R&D and trial runs.
Every batch is tested in-house and retains full traceability from raw material to finished goods.
Why Choose Jinan Shenghe Chemical
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About Jinan Shenghe Chemical Co., Ltd.
Jinan Shenghe Chemical Co., Ltd.
We are a professional chemical supplier based in Jinan, China. Since 2013, we have been connecting manufacturers and global B2B buyers with reliable sourcing, quality-controlled products and efficient logistics.
Our business covers food & feed additives, fine chemicals, pharmaceutical intermediates, eco-materials, coatings and specialty chemicals — all non-hazardous and compliant with our licensed scope.