Material Safety Data
Section 1 - Chemical Product and Company
MSDS Name: Potassium Hydroxide
Catalog Numbers: S71978, S71979, S71979-1, S71979-2,
P246-3, P250-1, P250-10, P250-3, P250-50, P250-500, P250-50LC, P251-3, P251-50,
P251-500, P251-50KG, P25812, P258212, P25850, P25850LC, PFP25050LC, S71977,
Synonyms: Caustic potash, Lye, Potassium hydrate
Fair Lawn, NJ
For information, call: 201-796-7100
For CHEMTREC assistance, call: 800-424-9300
For International CHEMTREC assistance, call: 703-527-3887
Section 2 -
Composition, Information on Ingredients
||Potassium hydroxide (KOH)
Risk Phrases: 22 35
Section 3 - Hazards
Appearance: white or yellow. Danger! Corrosive.
Water-Reactive. Harmful if swallowed. Causes severe eye and skin burns. Causes
severe digestive and respiratory tract burns.
Eye: Causes severe eye burns. May
cause irreversible eye injury. Contact may cause ulceration of the conjunctiva
and cornea. Eye damage may be delayed.
Skin: Causes skin
burns. May cause deep, penetrating ulcers of the skin.
Ingestion: Harmful if swallowed. May cause circulatory
system failure. May cause perforation of the digestive tract. Causes severe
digestive tract burns with abdominal pain, vomiting, and possible death.
Inhalation: Harmful if inhaled. Irritation may lead to
chemical pneumonitis and pulmonary edema. Causes severe irritation of upper
respiratory tract with coughing, burns, breathing difficulty, and possible coma.
Chronic: Prolonged or repeated skin contact may cause
dermatitis. Prolonged or repeated eye contact may cause conjunctivitis.
Section 4 - First Aid
Eyes: Immediately flush eyes with plenty of water
for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get
medical aid immediately.
Skin: Get medical aid immediately.
Immediately flush skin with plenty of soap and water for at least 15 minutes
while removing contaminated clothing and shoes. Discard contaminated clothing in
a manner which limits further exposure.
Ingestion: Do NOT
induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or
water. Never give anything by mouth to an unconscious person. Get medical aid
Inhalation: Get medical aid immediately.
Remove from exposure to fresh air immediately. If breathing is difficult, give
oxygen. If breathing has ceased apply artificial respiration using oxygen and a
suitable mechanical device such as a bag and a mask.
Physician: Treat symptomatically and supportively.
Section 5 - Fire
Information: As in any fire, wear a self-contained breathing apparatus
in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective
gear. Use water with caution and in flooding amounts. Contact with moisture or
water may generate sufficient heat to ignite nearby combustible materials.
Extinguishing Media: For small fires, use dry chemical,
carbon dioxide, water spray or alcohol-resistant foam.
Section 6 -
Accidental Release Measures
Information: Use proper personal protective equipment as indicated in
Spills/Leaks: Vacuum or sweep up material and
place into a suitable disposal container. Avoid generating dusty conditions.
Section 7 - Handling
Handling: Wash thoroughly after handling. Use with
adequate ventilation. Do not allow water to get into the container because of
violent reaction. Do not get in eyes, on skin, or on clothing. Do not ingest or
Storage: Store in a tightly closed container. Store
in a cool, dry, well-ventilated area away from incompatible substances. Keep
away from strong acids. Keep away from water. Keep away from metals. Keep away
from flammable liquids. Keep away from organic halogens.
Section 8 - Exposure
Controls, Personal Protection
Controls: Use adequate general or local exhaust ventilation to keep
airborne concentrations below the permissible exposure limits.
|Potassium hydroxide (KOH)
||C 2 mg/m3
OSHA Vacated PELs:
Potassium hydroxide (KOH): C 2 mg/m3
Eyes: Wear safety glasses and chemical
goggles or face shield if handling liquids.
appropriate gloves to prevent skin exposure.
appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29CFR
1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN
149 approved respirator when necessary.
Section 9 - Physical
and Chemical Properties
Appearance: white or yellow
pH: 13.5 (0.1M solution)
Vapor Pressure: Not available.
Vapor Density: Not available.
Viscosity: Not available.
Boiling Point: 2408
Freezing/Melting Point:680 deg F
Temperature: Not applicable.
Flash Point: Not applicable.
Decomposition Temperature:Not available.
(estimated) Health: 3; Flammability: 0; Reactivity: 1
Upper: Not available.
Soluble in water
Section 10 -
Stability and Reactivity
Stability: Stable. Readily absorbs carbon dioxide and moisture from the air
Conditions to Avoid: Incompatible materials,
moisture, contact with water, acids, metals.
Incompatibilities with Other
Materials: Generates large amounts of heat when in contact with water and
may steam and splatter. Reacts with chlorine dioxide, nitrobenzene,
nitromethane, nitrogen trichloride, peroxidized tetrahydrofuran,
2,4,6-trinitrotoluene, bromoform+ crown ethers, acids alcohols, sugars,
germanium cyclopentadiene, maleic dicarbide. Corrosive to metals such as
aluminum, tin, and zinc to cause formation of flammable hydrogen gas.
Hazardous Decomposition Products: Oxides of potassium.
Hazardous Polymerization: Has not been reported.
Section 11 -
CAS# 1310-58-3: TT2100000
Draize test, rabbit, skin: 50 mg/24H Severe;
Oral, rat: LD50 =
CAS# 1310-58-3: Not listed by
ACGIH, IARC, NIOSH, NTP, or OSHA.
Epidemiology: No data available.
Teratogenicity: No information reported.
Effects: No data available.
Neurotoxicity: No data available.
Mutagenicity: No data available.
Other Studies: No data
Section 12 -
Fish: Mosquito Fish: LC50 = 80.0 mg/L; 24 Hr.; Unspecified No data available.
Environmental: No information found.
Other: No information available.
Section 13 - Disposal
Chemical waste generators
must determine whether a discarded chemical is classified as a hazardous waste.
US EPA guidelines for the classification determination are listed in 40 CFR
Parts 261.3. Additionally, waste generators must consult state and local
hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.
Section 14 -
||POTASSIUM HYDROXIDE, SOLID
Section 15 -
CAS# 1310-58-3 is listed on the TSCA
Health & Safety Reporting List
None of the
chemicals are on the Health & Safety Reporting List.
None of the chemicals in this product are under a Chemical Test
None of the chemicals are listed under TSCA
TSCA Significant New Use Rule
None of the chemicals
in this material have a SNUR under TSCA.
CAS# 1310-58-3: final RQ = 1000 pounds (454 kg)
None of the chemicals in this product have a TPQ.
CAS # 1310-58-3: acute, reactive.
chemicals are reportable under Section 313.
Clean Air Act:
material does not contain any hazardous air pollutants. This material does not
contain any Class 1 Ozone depletors. This material does not contain any Class 2
Clean Water Act:
CAS# 1310-58-3 is listed as a
Hazardous Substance under the CWA. None of the chemicals in this product are
listed as Priority Pollutants under the CWA. None of the chemicals in this
product are listed as Toxic Pollutants under the CWA.
of the chemicals in this product are considered highly hazardous by OSHA.
CAS# 1310-58-3 can be found on the following state right to
know lists: California, New Jersey, Florida, Pennsylvania, Minnesota,
California No Significant Risk Level: None of the chemicals
in this product are listed. European/International
European Labeling in Accordance with EC
Harmful if swallowed.
R 35 Causes severe burns.
S 26 In case of contact with eyes, rinse immediately
plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective
and eye/face protection.
S 45 In case of accident or if
you feel unwell, seek
medical advice immediately (show the label where
WGK (Water Danger/Protection)
CAS# 1310-58-3: 1
CAS# 1310-58-3 is listed on Canada's DSL List. CAS#
1310-58-3 is listed on Canada's DSL List.
This product has a WHMIS
classification of D1B, E.
CAS# 1310-58-3 is listed on Canada's Ingredient
CAS# 1310-58-3: OEL-AUSTRALIA:TWA
2 mg/m3 OEL-BELGIUM:STEL 2 mg/m3
OEL-DENMARK:TWA 2 mg/m3 OEL-FINLAND:TWA 2
mg/m3 OEL-FRANCE:STEL 2 m
g/m3 OEL-JAPAN:STEL 2 mg/m3 OEL-THE
NETHERLANDS:TWA 2 mg/m3 OEL-SWI
TZERLAND:TWA 2 mg/m3 OEL-UNITED KINGDOM:TWA 2
mg/m3;STEL 2 mg/m3 OEL
IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEAL
AND, SINGAPORE, VIETNAM check ACGI TLV
Section 16 -
MSDS Creation Date:
Revision #3 Date: 10/06/2000
The information above is
believed to be accurate and represents the best information currently available
to us. However, we make no warranty of merchantability or any other warranty,
express or implied, with respect to such information, and we assume no liability
resulting from its use. Users should make their own investigations to determine
the suitability of the information for their particular purposes. In no event
shall Fisher be liable for any claims, losses, or damages of any third party or
for lost profits or any special, indirect, incidental, consequential or
exemplary damages, howsoever arising, even if Fisher has been advised of the
possibility of such damages.