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MSDS 
:
 Aqueous Potassium Hydroxide Solutions
CAS 
:
 1310-58-3
SYNONYMS 
:
 Caustic Potash; Lye; Potassium Hydrate.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 1310-58-3 |Potassium hydroxide | 5.6-56.0 | 215-181-3 |
|----------------|--------------------------------------|----------|-----------|
| 7732-18-5 |Water | 44.0-90 | 231-791-2 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: C
Risk Phrases: 22 35

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Harmful if swallowed. Causes severe burns.Corrosive.

Potential Health Effects
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. Causes gastrointestinal tract burns. May cause
circulatory system failure. May cause perforation of the digestive
tract. Causes severe pain, nausea, vomiting, diarrhea, and shock.
Inhalation:
Harmful if inhaled. Irritation may lead to chemical pneumonitis and
pulmonary edema. Causes chemical burns to the respiratory tract.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Prolonged
or repeated eye contact may cause conjunctivitis.

**** SECTION 4 - FIRST AID MEASURES ****

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
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 immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Wear
appropriate protective clothing to prevent contact with skin and
eyes. Wear a self-contained breathing apparatus (SCBA) to prevent
contact with thermal decomposition products. Containers may explode
when heated. Non-combustible, substance itself does not burn but may
decompose upon heating to produce irritating, corrosive and/or toxic
fumes. Runoff from fire control or dilution water may cause
pollution.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or
alcohol-resistant foam. Use water spray to cool fire-exposed
containers. Do NOT get water inside containers. For large fires, use
dry chemical, carbon dioxide, alcohol-resistant foam, or water
spray.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Clean up spills immediately,
observing precautions in the Protective Equipment section. Provide
ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

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 inhale.
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.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use adequate general or local exhaust ventilation to keep airborne
concentrations below the permissible exposure limits.
Exposure Limits
CAS# 1310-58-3:
United Kingdom, WEL - STEL: 2 mg/m3 STEL

Belgium - STEL: 2 mg/m3 VLE
France - VLE: 2 mg/m3 VLE
Japan: 2 mg/m3 Ceiling
Malaysia: 2 mg/m3 Ceiling
Spain: 2 mg/m3 VLA-EC
CAS# 7732-18-5:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: colorless
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Not available.
Specific Gravity/Density: 1.05
Molecular Formula: KOH
Molecular Weight: 56.1047

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable under normal temperatures and pressures. Readily absorbs
carbon dioxide and moisture from the air and deliquesces (to absorb
atmospheric water vapor and become liquid).
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:
Carbon monoxide, sodium oxide, oxides of potassium.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 1310-58-3: TT2100000
CAS# 7732-18-5: ZC0110000
LD50/LC50:
CAS# 1310-58-3: Draize test, rabbit, skin: 50 mg/24H Severe; Oral,
rat: LD50 = 273 mg/kg.
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
Carcinogenicity:
Potassium hydroxide -
Not listed by ACGIH, IARC, or NTP.
Water -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****

Ecotoxicity:
Cas# 1310-58-3: LC50 (24 hr.) mosquito fish = 80.0 mg/L

**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: POTASSIUM HYDROXIDE, SOLUTION
Hazard Class: 8
UN Number: 1814
Packing Group: II
IMO
Shipping Name: POTASSIUM HYDROXIDE, SOLUTION
Hazard Class: 8
UN Number: 1814
Packing Group: II
RID/ADR
Shipping Name: POTASSIUM HYDROXIDE, SOLUTION
Hazard Class: 8
UN Number: 1814
Packing group: II
USA RQ: CAS# 1310-58-3: 1000 lb final RQ; 454 kg final RQ

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 22 Harmful if swallowed.
R 35 Causes severe burns.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 1310-58-3: 1
CAS# 7732-18-5: No information available.
Canada
CAS# 1310-58-3 is listed on Canada's DSL List.
CAS# 7732-18-5 is listed on Canada's DSL List.
CAS# 1310-58-3 is listed on Canada's Ingredient Disclosure List.
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1310-58-3 is listed on the TSCA inventory.
CAS# 7732-18-5 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
MSDS Creation Date: 6/21/1999 Revision #4 Date: 3/18/2003

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 way shall the company 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 the company has been advised of
the possibility of such damages.
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NAMECAS
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Manganese Standard metal Solution 7439-96-5
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Aqueous Potassium Hydroxide Solutions 1310-58-3
Manganese standard metal solution in approx. M nitric acid 7439-96-5
Magnesium standard metal solution 1000 ppm in approx. M nitric acid 7439-95-4
Magnesium standard metal solution 10,000 ppm in approx. M nitric acid 7439-95-4
Lithium standard metal solution in approx. M nitric acid 7439-93-2
Iron standard metal solution 10000 ug/g in approx. M nitric acid 7439-89-6
Iron atomic absorption solution 1000 ug/g in approx. M nitric acid 7439-89-6
N,O-Bis(trimethylsilyl)hydroxylamine, 97%
Gold Standard Metal Solution 7647-01-0
Copper standard metal solution 1000 ppm in approx. M nitric acid 7440-50-8
Copper standard metal solution 10,000 ppm in approx. M nitric acid 7440-50-8
Cobalt standard metal solution 1000 ppm in approx. M nitric acid 7440-48-4
Nitric acid solution, 5 - 20% 7697-37-2
Cobalt standard metal solution 10,000 ppm in approx. M nitric acid 7440-48-4
Chromium Standard Metal Solution 1000 PPM 7440-47-3
Chromium Standard Metal Solution 10,000 PPM 7440-47-3
Perchloric acid, 0.1M in acetic acid 64-19-7
Phenol disulfonic acid solution 96-77-5
Boron Standard Metal Solution 7697-32-7
Calcium standard metal solution in approx. M nitric acid 7440-70-2
D (+) Melibiose Monohydrate 66009-10-7
N-Methyl-bis-trifluoroacetamide 685-27-8
N-Heptadecanoic Acid 506-12-7
Barium chloride solution, 1M 7732-18-5
Bicarbonate indicator solution 76-61-9
Ammonia-Ammonium Chloride Buffer Solution 7664-41-7
2,4,6-Trichlorophenylhydrazine, 98% (Titr.) 5329-12-4
Cadmium standard metal solution 1000 ppm 7440-43-9
Cadmium standard metal solution 10,000 ppm in approx. M nitric acid 7440-43-9
(5S)-5,6-Isopropylidenedioxy-6-Methyl-Heptan-2-One, 99% 61262-94-0
Barium standard metal solution in nitric acid 7440-39-3
Arsenic Standard Metal Solution 1327-53-3
Antimony Standard Metal Solution 7647-01-0
Aluminium standard metal solution 1000 ppm in nitric acid 7429-90-5
N-Methyl-N-(trimethylsilyl)trifluoroacetamide, 97% 24589-78-4
Aluminium standard metal solution 10,000 ppm in nitric acid 7429-90-5
Lead (IV) Tetra-Acetate (Packed under Glacial Acetic Acid) 546-67-8
Sulfuric Acid Volumetric Solution 7664-93-9
Sulfuric acid volumetric solutions 0.1M 7664-93-9
Sulfuric Acid Volumetric Solutions 0.05 M 7664-93-9
Ficodox COD Reagent 7664-93-9
Potassium Pyrogallate Solution 87-66-1
Silver Nitrate Solution 0.1M 7732-18-5
tert-Butyl carbazate, 97% 870-46-2
Orotic acid hydrate, 98% 50887-69-9

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