Chemical Datasheet
POTASSIUM HYDROXIDE, SOLUTION |
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Chemical Identifiers
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The
Chemical Identifier fields
include common identification numbers, the
NFPA diamond
U.S. Department of Transportation hazard labels, and a general
description of the chemical. The information in CAMEO Chemicals comes
from a variety of
data sources.
| CAS Number | UN/NA Number | DOT Hazard Label | USCG CHRIS Code |
|---|---|---|---|
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| NIOSH Pocket Guide | International Chem Safety Card | ||
| none | |||
NFPA 704
| Diamond | Hazard | Value | Description | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Health
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3 | Can cause serious or permanent injury. | |||||||||
Flammability
|
0 | Will not burn under typical fire conditions. | ||||||||||
Instability
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1 | Normally stable but can become unstable at elevated temperatures and pressures. | ||||||||||
Special
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(NFPA, 2010)
General Description
An clear aqueous solution. Corrosive to metals and tissue. Noncombustible. Used in chemical manufacturing, petroleum refining, cleaning compounds.
Hazards
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The
Hazard fields
include
special hazard alerts
air and water
reactions, fire hazards, health hazards, a reactivity profile, and
details about
reactive groups assignments
and
potentially incompatible absorbents.
The information in CAMEO Chemicals comes from a variety of
data sources.
Reactivity Alerts
none
Air & Water Reactions
Forms crusts on exposure to air (from absorption of carbon dioxide). Water soluble. Dilution of concentrated solutions generates heat.
Fire Hazard
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2016)
Health Hazard
Causes severe burns of eyes, skin, and mucous membranes. (USCG, 1999)
Reactivity Profile
POTASSIUM HYDROXIDE, SOLUTION is a strong base dissolved in water. Reacts exothermically with all acids. Slowly dissolves glass. Attacks aluminum and zinc to generate flammable hydrogen gas. Ignited a polyethylene container liner when mixed with potassium persulfate by release of heat and oxygen [MCA Case History 1155. 1955].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below. More info about absorbents, including situations to watch out for...
- Cellulose-Based Absorbents
- Mineral-Based & Clay-Based Absorbents
Response Recommendations
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The
Response Recommendation fields
include isolation and evacuation distances, as well as recommendations for
firefighting, non-fire response, protective clothing, and first aid. The
information in CAMEO Chemicals comes from a variety of
data sources.
Isolation and Evacuation
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
Firefighting
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
SMALL FIRE: Dry chemical, CO2 or water spray.
LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2016)
SMALL FIRE: Dry chemical, CO2 or water spray.
LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2016)
Non-Fire Response
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)
Protective Clothing
Wide-brimmed hat and close-fitting safety goggles equipped with rubber side shields; long-sleeved cotton shirt or jacket with buttoned collar and buttoned sleeves; rubber or rubber-coated canvas gloves. (Shirt sleeves should be buttoned over the gloves so that any spilled material will run down the outside.) Rubber safety-toe-shoes or boots and cotton coveralls. (Trouser cuffs should be worn outside of boots.) Rubber apron. (USCG, 1999)
DuPont Tychem® Suit Fabrics
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Tychem® Fabric Legend
| QS = Tychem 2000 SFR |
| QC = Tychem 2000 |
| SL = Tychem 4000 |
| C3 = Tychem 5000 |
| TF = Tychem 6000 |
| TP = Tychem 6000 FR |
| BR = Tychem 9000 |
| RC = Tychem RESPONDER® CSM |
| TK = Tychem 10000 |
| RF = Tychem 10000 FR |
Testing Details
The fabric permeation data was generated for DuPont by independent
testing laboratories using ASTM F739, EN369, EN 374-3, EN ISO 6529
(method A and B) or ASTM D6978 test methods.
Normalized breakthrough times
(the time at which the permeation rate is equal to 0.1 µg/cm2/min)
reported in minutes.
All liquid chemicals have been tested between approximately 20°C and
27°C unless otherwise stated.
A different temperature may have significant influence on the
breakthrough time; permeation rates typically increase with
temperature.
All chemicals have
been tested at a concentration of greater than 95% unless otherwise
stated.
Unless otherwise stated, permeation was measured for single chemicals.
The permeation characteristics of mixtures can deviate considerably
from the permeation behavior of the individual chemicals.
Chemical warfare agents (Lewisite, Sarin, Soman, Sulfur
Mustard, Tabun and VX Nerve Agent) have been tested at 22°C and 50%
relative humidity per military standard MIL-STD-282.
| Chemical | CAS Number | State | QS | QC | SL | C3 | TF | TP | BR | RC | TK | RF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Caustic potash (45%) | 1310-58-3 | Liquid | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 |
| KOH (Potassium hydroxide) (45%) | 1310-58-3 | Liquid | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 |
| Potash lye (45%) | 1310-58-3 | Liquid | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 |
| Potassium hydroxide (45%) | 1310-58-3 | Liquid | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 | >480 |
> indicates greater than.
Special Warnings from DuPont
- Serged and bound seams are degraded by some hazardous liquid chemicals, such as strong acids, and should not be worn when these chemicals are present.
-
CAUTION: This information is based upon technical data that
DuPont believes to be reliable. It is subject to revision as
additional knowledge and experience are gained. DuPont makes no
guarantee of results and assumes no obligation or liability...
... in connection with this information. It is the user's responsibility to determine the level of toxicity and the proper personal protective equipment needed. The information set forth herein reflects laboratory performance of fabrics, not complete garments, under controlled conditions. It is intended for informational use by persons having technical skill for evaluation under their specific end-use conditions, at their own discretion and risk. Anyone intending to use this information should first verify that the garment selected is suitable for the intended use. In many cases, seams and closures have shorter breakthrough times and higher permeation rates than the fabric. Please contact DuPont for specific data. If fabric becomes torn, abraded or punctured, or if seams or closures fail, or if attached gloves, visors, etc. are damaged, end user should discontinue use of garment to avoid potential exposure to chemical. Since conditions of use are outside our control, we make no warranties, express or implied, including, without limitation, no warranties of merchantability or fitness for a particular use and assume no liability in connection with any use of this information. This information is not intended as a license to operate under or a recommendation to infringe any patent or technical information of DuPont or others covering any material or its use.
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(DuPont, 2018)
First Aid
(Act quickly])
EYES: flush with water for at least 15 min.
SKIN: flush with water, then rinse with dilute vinegar (acetic acid).
INGESTION: give water and milk. Do NOT induce vomiting. Call physician at once, even when injury seems to be slight. (USCG, 1999)
EYES: flush with water for at least 15 min.
SKIN: flush with water, then rinse with dilute vinegar (acetic acid).
INGESTION: give water and milk. Do NOT induce vomiting. Call physician at once, even when injury seems to be slight. (USCG, 1999)
Physical Properties
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The
Physical Property fields
include properties such as vapor pressure and
boiling point, as well as explosive limits and
toxic exposure thresholds
The information in CAMEO Chemicals comes from a variety of
data sources.
| Chemical Formula: |
|
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature:
Not flammable
(USCG, 1999)
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.45 to 1.50
at 68 ° F
(USCG, 1999)
Boiling Point:
greater than 266 ° F
at 760 mm Hg
(USCG, 1999)
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.PACs (Protective Action Criteria)
| Chemical | PAC-1 | PAC-2 | PAC-3 |
|---|---|---|---|
| Potassium hydroxide (1310-58-3) | 0.18 mg/m3 | 2 mg/m3 | 54 mg/m3 |
(DOE, 2016)
Regulatory Information
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The
Regulatory Information fields
include information from
the U.S. Environmental Protection Agency's Title III Consolidated List of
Lists,
the U.S. Department of Homeland Security's Chemical Facility
Anti-Terrorism Standards,
and the U.S. Occupational Safety and Health Administration's
Process Safety Management of Highly Hazardous Chemicals Standard List
(see more about these
data sources).
EPA Consolidated List of Lists
| Regulatory Name | CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ | EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
|---|---|---|---|---|---|---|---|
| Potassium hydroxide | 1310-58-3 | 1000 pounds |
(EPA List of Lists, 2015)
DHS Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.OSHA Process Safety Management (PSM) Standard List
No regulatory information available.Alternate Chemical Names
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This section provides a listing of alternate names for this chemical,
including trade names and synonyms.
- CAUSTIC POTASH
- CAUSTIC POTASH SOLUTION
- CAUSTIC POTASH, LIQUID
- CYANTEK CC 723
- LYE
- POTASH
- POTASSIUM HYDROXIDE
- POTASSIUM HYDROXIDE (LYE)
- POTASSIUM HYDROXIDE SOLUTION
- POTASSIUM HYDROXIDE, SOLUTION
- POTASSIUM HYDROXIDE, [LIQUID]
Web site owner:
Office of Response and Restoration
,
National Ocean Service,
National Oceanic and Atmospheric Administration.
USA.gov.
CAMEO Chemicals version 2.7.1 rev 3.