Potassium hydroxide |
Synonyms & Trade Names Caustic potash, Lye, Potassium hydrate |
CAS No. 1310-58-3 |
RTECS No. TT2100000 |
DOT ID & Guide 1813 154 (dry, solid)
1814 154 (solution) |
FormulaKOH |
Conversion |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: C 2 mg/m3
OSHA PEL†: none |
Measurement Methods
NIOSH 7401
See: NMAM or OSHA Methods |
Physical Description Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.] |
MW: 56.1 |
BP: 2415°F |
MLT: 716°F |
Sol(59°F): 107% |
VP(1317°F): 1 mmHg |
IP: ? |
Sp.Gr: 2.04 |
Fl.P: NA |
UEL: NA |
LEL: NA |
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Noncombustible Solid; however, may react with H2O & other substances
and generate sufficient heat to ignite combustible materials. |
Incompatibilities & Reactivities Acids, water, metals (when wet), halogenated hydrocarbons, maleic anhydride [Note: Heat is generated if KOH comes in contact with H2O & CO2 from the air.] |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, respiratory system; cough, sneezing; eye, skin burns; vomiting, diarrhea |
Target Organs Eyes, skin, respiratory system |
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Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0357
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