<< GE00099 POTASSIUM HYDROXIDE, SOLUTION 48% >>

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Safety Data Sheet
1. Chemical product and company identification
Product name

: POTASSIUM HYDROXIDE, SOLUTION 48%

Company information
Name of manufacturer
Address
Name of section
Telephone number
Facsimile number
Mail address
Reference No： KANTO CHEMICAL CO., INC.
： 2-1, Nihonbashi, Muromachi 2-Chome, Chuo-Ku, Tokyo, 103-0022, Japan： Electronic materials division technical department： +81-3-6214-1080： +81-3-3241-1043： el-info@kanto.co.jp: GE00099 1.3

Recommended uses andrestrictions: Electronic chemicals

2. Hazards identification
GHS classification
Health hazards

Acute toxicity (oral)

Category 4

Skin corrosion/irritation

Category 1B

Serious eye damage/eyeirritation

Category 1

Specific target organ toxicity(single exposure)

Category 1 (respiratory organs)

Specific target organ toxicity(repeated exposure)

Category 1 (respiratory organs)

Aspiration hazard

Category 1Hazard
pictograms

Signal word:

DangerHazard statements:

Harmful if swallowed
May be fatal if swallowed and enters airwaysCauses severe skin burns and eye damage
Causes damage to organs (respiratory organs)
Causes damage to organs (respiratory organs) through prolonged orrepeated exposure

Prevention:

Do not breathe mist/vapors.
Wash hands, forearms and face thoroughly after handling.
Do not eat, drink or smoke when using this product.
Wear protective gloves/protective clothing/eye protection/faceprotection.

Response:

IF SWALLOWED: Immediately call a POISON CENTER or doctor.
IF SWALLOWED: Call a POISON CENTER or doctor if you feel unwell.
IF SWALLOWED: Rinse mouth. Do not induce vomiting.
IF ON SKIN (or hair): Take off immediately all contaminatedPrecautionary statements

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clothing. Rinse skin with water .
IF INHALED: Remove person to fresh air and keep comfortable forbreathing.
IF IN EYES: Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do. Continue
rinsing.
IF exposed or concerned: Call a POISON CENTER or doctor.
Immediately call a POISON CENTER or doctor.
Get medical advice/attention if you feel unwell.
Do not induce vomiting.
Storage:

Store locked up.

Disposal:

Dispose of contents/container to hazardous or special waste
collection point, in accordance with local, regional, national
and/or international regulation.

3. Composition/information on ingredients
Distinction of substance ormixture
Chemical name
Potassium hydroxide:

Substance

Concentration (%)

Formula48

KOH

TSCA
ListedEC-No.
215-181-3

CAS RN
1310-58-3

4. First aid measures
First aid measures
First-aid measures afterinhalation:

Remove the victim to fresh air, and make him blow his nose andgargle.

First-aid measures after skincontact:

Wash the affected areas under running water, get medical
treatment as soon as possible.

First-aid measures after eye
contact:

Wash the affected areas under running water for at least 15
minutes. Get medical treatment.

First-aid measures afteringestion:

Rinse mouth with water. Give the victim one or two glasses ofwater or milk. Do not induce vomiting. Get medical treatment assoon as possible.

Personal Protection in FirstAid and Measures:

Rescuers should wear proper protective equipment like rubber
gloves, goggles.

:

Inhalation brings on burning sensation of throat, throat pain,cough, breathlessness, and these symptoms may delay. Skin contact
causes redness, pain, severe skin burns, and blisters. Eyecontact causes redness, pain, and blurred vision.

Suitable extinguishing media:

This product is noncombustible.

Unsuitable extinguishing media

:

None

Firefighting instructions:

Move containers from fire area if it can be done without risk, if
not possible, apply water from a safe distance to cool andprotect surrounding area.

Personal protection (Emergency:

Firefighters should wear protective equipment.

Most Important Symptoms/Effects
Symptoms/effects

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response)

6. Accidental release measures
Personal Precautions, Protective Equipment and Emergency Procedures
General measures:

Wear proper protective equipment and avoid contact with skin andinhalation of vapor. Conduct operations from upwind and evacuate
people downwind. Keep away personnel except for authorized ones
from spillage area by stretching ropes.

:Attention should be given to avoid discharge of spilled productinto rivers and resulting environmental damage. When diluting
spill with large amounts of water, discharge of untreatedwastewater into the environment must be avoided.

Environmental precautions
Environmental precautions

Methods and Equipment for Containment and Cleaning up:

Collect the spillage as much as possible to switable empty
container. Neutralize residue with dilute acid and then flushwith copious of water.

Technical measures:

Wear proper protective equipment to avoid contact with skin or
inhalation of vapor.

Precautions for safe handling:

Use with an enclosed system or a local exhaust ventilation.

Storage conditions:

Store in a dark, cool place and tightly closed.

Material used inpackaging/containers:

Polyethylene, polypropylene, fluorocarbon polymers.

For containment

7. Handling and storage
Handling

Storage

8. Exposure controls / Personal protection equipment
Potassium hydroxide
ACGIH Ceiling

2 mg/m³

Appropriate engineering
controls
Protective equipment: Use with an enclosed system or a local exhaust ventilation.

Respiratory protection: If necessary, wear dust mask

Hand protection: Impervious protective gloves

Eye protection: Safety goggles

Skin and body protection: Protective clothing, protective boots

9. Physical and chemical properties
Physical state: LiquidColor: Colorless.

Odor: OdorlesspH: 14 (1mol/L, 25℃)

Melting point: No data available

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Freezing point: No data available

Boiling point: 140 °C

Flash point: Non flammable.

Auto-ignition temperature: Non flammable.

Decomposition temperature: No data available

Flammability: Non flammable.

Vapor pressure: 0.41 kPa (20℃)

Relative density: No data available

Density: 1.49 g/cm³ (20℃)

Relative gas density: No data available

Solubility: Water: Miscible.

Partition coefficient noctanol/water (log Pow)

: No data available

Explosive limits (vol %): No data available

Viscosity, kinematic:: No data available

Particle characteristics: No data available

10. Stability and reactivity
Reactivity: Hydroxides precipitate from aqueous solutions of many metal salts.
Fats are saponified to produce the fatty acids sodium and glycerin.

Chemical stability: Stable under normal conditions. It absorbs carbon dioxide in the
air to produce potassium carbonate.

Possibility of hazardous
reactions: Generate heat vigorously when contact with acids.
The chemical corrodes aluminium, tin, zinc, chromium, and their
alloys, releasing combustible hydrogen gas.

Conditions to avoid: Light, heat.

Incompatible materials: Acids, metals.

Hazardous decomposition
products: Potassium oxide, hydrogen.

11. Toxicological information
Acute toxicity (oral)
Acute toxicity (dermal)
Acute toxicity (inhalation): Harmful if swallowed
ATEmix=569mg/kg: Classification not possible: No classification (gas)Classification not possible (vapor)
Classification not possible (dust, mist)

Skin corrosion/irritation: Causes severe skin burns
Potassium hydroxide : The substance (solid) is described to becorrosive. Exposure to human skin caused chemical burns (3rddegree). Battery electrolyte (25％ solution of the substance)
caused tissue corrosion associated with small perforation. In
rabbit skin irritation tests, corrosiveness was observed. Thus, it
was classified into category 1B.

Serious eye damage/irritation: Causes serious eye damage
Potassium hydroxide : Based on the statements that it caused
irreversible damage to humans and that it was corrosive to rabbits,
it was classified into category 1.

Respiratory sensitization: Classification not possible

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Skin sensitization: Classification not possible
Potassium hydroxide : Skin sensitization studies in guinea pigs
gave negative results. Potassium ion (K+) and hydroxide ion (OH-)
exist in living organisms. Thus, it is unlikely that the substancecauses skin sensitization.
However, the classification was not possible because the details of
the test are unknown and there is no human data.

Germ cell mutagenicity: No classification
Pottasiumu hydroxide : There are no in vivo data on this substance.
As for in vitro, a bacterial reverse mutation test and a mammaliancell chromosome aberration test were negative. In SIDS, themutagenicity of this substance was evaluated from comprehensive
information on this substance, sodium hydroxide, potassium
chloride, and potassium carbonate. Based on this evaluation, It is
stated in SIDS that these substances are not considered to be
genotoxic.

Carcinogenicity: Classification not possible

Reproductive toxicity: Classification not possible

STOT-single exposure: Causes damage to organs (respiratory organs)
Potassium hydroxide : The substance acts as strong alkali on skinand mucosa, and inhalation exposure to dust or mist may cause upper
respiratory tract irritation and tissue damages, leading to nasal
septum damage and pulmonary edema. Thus, it was classified into
category 1 (respiratory organs).

STOT-repeated exposure: Causes damage to organs (respiratory organs) through prolonged orrepeated exposure
Potassium hydroxide : Human studies have shown that inhalation of
the substance (dust, mist) causes upper airway inflammation, which
may result in nasal septum ulceration as a chronic effect. However,there is no studies on airborne concentrations and incidence oflesions. Exposure to dust or mist of the substance may cause nasal
septum lesions and irritation of the eyes and respiratory tract.
Although there is not sufficient data, it is clear that thesubstance is alkaline and inhalation causes respiratory
inflammation. Thus, the substance was classified into category 1(respiratory organs).

Aspiration hazard: May be fatal if swallowed and enters airways
Potassium hydroxide : Studies show that in fatal cases ofunintentional ingestion of the substance, the cause of death
involves aspiration into the esophagus to trachea and pneumonia,
and aspiration of alkali into airway causes fatal injuries to thelarynx, trachea/bronchus, and lung. Thus, it was classified into
category 1.

12. Ecological information
Ecotoxicity
Aquatic acute
Aquatic chronic: Classification not possible: Classification not possible

Persistence and degradability
No additional information available

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Bioaccumulative potential
No additional information available
Mobility in soil
No additional information available
Hazardous to the ozone layer
Ozone: Classification not possible

13. Disposal considerations
Ecological waste information: Neutralization method :Dissolve in water and flush in a drain after neutralizing withdiluted acids.
Or consult approved disposal companies.

Contaminated container andpackaging: In case of disposal of empty bottles, dispose bottles afterremoving the content thoroughly.

14. Transport information
International Regulations
Transport by sea(IMDG)
UN-No. (IMDG)
Proper Shipping Name (IMDG)
Packing group (IMDG)
Transport hazard class(es)(IMDG)Air transport(IATA)
UN-No. (IATA)
Proper Shipping Name (IATA)
Packing group (IATA)
Transport hazard class(es)(IATA)::::

1814
POTASSIUM HYDROXIDE SOLUTION
II
8:
::
:

1814
Potassium hydroxide solution
II
8

Marine pollutant: Not applicable
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Pollutant category:Y
MFAG-No:154

15. Regulatory information
Regulatory information with regard to this substance in your country or region should be examined byyour own responsibility.

16. Other information
Data sources: Handbook of dangeroous and hazardous chemicals, Japan
Industrial Safety & Health Association.（2000-2001）.
Handbook of Dangerous Substances Springer-Verlag Tokyo（1991）.
Handbook of 17322 Chemical Products, The Chemical Daily Co.
（2022）.
Handbook of Poisonous and Deleterious substances, revised andenlarged edition, Yakumu Kohosa（2000）.
NITE Chemical Risk Information Platform (NITE-CHRIP), National
Institute of Technology and Evaluation.

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The information contained herein is based on several references and the present state of ourknowledge. However the SDS does not always cover all information about the product, handle theproduct carefully.The information is intended to ordinary usage, in case of particular handlings,
conduct appropriate safety measurements.The information herein is only provision of information, andit does not represent a guarantee the properties of the product.The Safety Data Sheet(SDS) isprepared based on JIS Z7253.