MSDS
MATERIAL SAFETY DATA SHEET
Potassium Silicate Solution
Trade Name:
Date Prepared: 11/12/07 Page: 1 of 5
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
Product name: SILMATRIX鈩? Potassium silicate solution
EPA registration number: 82100-1
Product description: A 2.50 weight ratio potassium silicate, 29.1% solution in water
Manufacturer: PQ Corporation
P. O. Box 840
Valley Forge, PA 19482 USA
Telephone: 610-651-4200 800-944-7411
For medical emergency
call PROSAR: 866-359-5667
For transportation emergency
Call CHEMTREC: 800-424-9300
2. COMPOSITION/INFORMATION ON INGREDIENTS
Chemical and Common Name CAS Registry Number Wt. % OSHA PEL ACGIH TLV
Water 7732-18-5 70.9% Not Established Not Established
Silicic acid, potassium salt; 1312-76-1 29.1% Not Established Not Established
Potassium silicate
3. HAZARDS IDENTIFICATION
Emergency Overview: Clear to hazy, colorless, odorless, thick liquid. Causes
moderate eye irritation, slightly irritating to the skin. Spray
mist causes irritation to respiratory tract. High pH is harmful
to aquatic life. Noncombustible. Spills are slippery. Reacts
with acids, ammonium salts, reactive metals and some
organics.
Eye contact: Causes moderate irritation to the eyes.
Skin contact: Causes slight irritation to the skin.
Inhalation: Spray mist irritating to respiratory tract.
Ingestion: May cause irritation to mouth, esophagus, and stomach.
Chronic hazards: No known chronic hazards. Not listed by NTP, IARC or OSHA
as a carcinogen.
Physical hazards: Dries to form glass film which can easily cut skin. Spilled
material is very slippery. Can etch glass if not promptly
removed.
4. FIRST AID MEASURES
Eye: IF IN EYES: Hold eye open and rinse slowly and gently with water for
15-20 minutes. Remove contact lenses, if present, after the first 5
minutes, then continue rinsing eye. Call a poison control center or doctor
for treatment advice.
Potassium Silicate Solution
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Skin: IF ON SKIN: Take off contaminated clothing. Rinse skin with plenty of
water for 15-20 minutes. Call a poison control center or doctor for
treatment advice.
Inhalation: IF INHALED: Remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical attention.
Ingestion: IF SWALLOWED: DO NOT induce vomiting. Get medical attention
immediately. If victim is fully conscious, give a cupful of water. Never
give anything by mouth to an unconscious person.
5. FIRE FIGHTING MEASURES
Flammable limits: This material is noncombustible.
Extinguishing Media: This material is compatible with all extinguishing media.
Hazards to fire-fighters: See Section 3 for information on hazards when this material
is present in the area of a fire.
Fire-fighting equipment: The following protective equipment for fire fighters is
recommended when this material is present in the area of a
fire: chemical goggles, body-covering protective clothing,
chemical resistant gloves, and rubber boots.
6. ACCIDENTAL RELEASE MEASURES
Personal protection: Wear chemical goggles, body-covering protective clothing, chemical
resistant gloves, and rubber boots. See section 8.
Environmental Hazards: This product is for terrestrial uses, do not apply directly to water, or to
areas where surface water is present or to intertidal areas below the
mean high water mark. Do not contaminate water when cleaning
equipment or disposing of equipment wash water or rinsate.
Do not discharge effluent containing this product into lakes, streams,
ponds, estuaries, oceans, or other waters unless in accordance with the
requirements of a National Pollutant Discharge Elimination System
(NPDES) permit and the permitting authority has been notified in
writing prior to discharge. Do not discharge effluent containing this
product to sewer systems without previously notifying the local sewage
treatment plant authority. For guidance contact your State Water Board
or Regional Office of the EPA.
In the event of an in-transit environmental release or spill of this product,
that may endanger the environment, call 1-800-424-9300.
Small spill cleanup: Mop up and dispose in accordance with federal, state and local
regulations or permits.
Large spill cleanup: Keep unnecessary people away; isolate hazard area and deny entry. Do
not touch or walk through spilled material. Stop leak if you can do so
without risk. Prevent runoff from entering into storm sewers and ditches
which lead to natural waterways. Isolate, dike and store discharged
material, if possible. Use sand or earth to contain spilled material. If
containment is impossible, neutralize contaminated area and flush with
large quantities of water.
CERCLA RQ: There is no CERCLA Reportable Quantity for this material. If a spill
goes off site, notification of state and local authorities is recommended.
Potassium Silicate Solution
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Date Prepared: 11/12/07 Page: 3 of 5
7. HANDLING AND STORAGE
Handling: Wash hands before eating, drinking, chewing gum, using tobacco or
using the toilet. Remove clothing immediately if pesticide gets inside.
Remove PPE immediately after handling this product. Wash the outside
of gloves before removing. As soon as possible, wash thoroughly and
change into clean clothing. Avoid contact with eyes, skin and clothing.
Avoid breathing spray mist. Keep container closed. Promptly clean
residue from closures with cloth dampened with water. Promptly clean
up spills. Wash thoroughly with soap and water after handling.
Storage: Keep pesticide in original container. Keep container tightly closed when
not in use. Store product above 40掳F. Do not store in aluminum,
fiberglass, copper, brass, zinc, or galvanized containers. Protect from
excessive heat. Store in a cool, dry place.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Engineering controls: Use with adequate ventilation. Keep containers closed. Safety shower
and eyewash fountain should be within direct access.
Respiratory protection: Use a NIOSH-approved dust and mist respirator where spray mist
occurs. Observe OSHA regulations for respirator use (29 C.F.R.
搂1910.134).
Skin protection: Applicators and other handlers must wear long-sleeved shirt and long
pants, shoes and socks. PPE required for early entry to treated areas that
is permitted under the Worker Protection Standard and that involves
contact with anything that has been treated, such as plants, soil, or water
is: Coveralls, Chemical-resistant gloves made of any waterproof material,
Shoes and socks.
Eye protection: Wear chemical goggles.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance: Thick liquid.
Color: Clear to hazy white.
Odor: Odorless or musty odor.
pH: 11.3
Specific gravity: 1.26 g/cm3 (20潞C), 29.8潞 B茅, 10.50 lbs/gal
Solubility in water: Miscible.
10. STABILITY AND REACTIVITY
Stability: This material is stable under all conditions of use and storage.
Conditions to avoid: None.
Materials to avoid: Gels and generates heat when mixed with acid. May react with
ammonium salts resulting in evolution of ammonia gas. Flammable
hydrogen gas may be produced on contact with aluminum, tin, lead, and
zinc.
Potassium Silicate Solution
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Date Prepared: 11/12/07 Page: 4 of 5
Hazardous decomposition
products: Hydrogen.
11. TOXICOLOGICAL INFORMATION
Acute Data: When tested for primary irritation potential, this material caused
moderate irritation to the eyes and was slightly irritating to the skin.
Human experience indicates that irritation occurs when potassium
silicates get on clothes at the collar, cuffs or other areas where abrasion
may occur.
The acute oral toxicity of this product has not been tested. When
chemically similar sodium silicates were tested on a 100% solids basis,
their single dose acute oral LD50 in rats ranged from 1500 mg/kg to 3200
mg/kg. The acute oral lethality resulted from nonspecific causes. This
product contains approximately 29.1% potassium silicate.
Subchronic Data: The subchronic toxicity of this material has not been tested. In a study of
rats fed chemically similar sodium silicate in drinking water for three
months, at 200, 600 and 1800 ppm, changes were reported in the blood
chemistry of some animals, but no specific changes to the organs of the
animals due to potassium silicate administration were observed in any of
the dosage groups. Another study reported adverse effects to the kidneys
of dogs fed potassium silicate in their diet at 2.4g/kg/day for 4 weeks,
whereas rats fed the same dosage did not develop any treatment-related
effects. Decreased numbers of births and survival to weaning was
reported for rats fed sodium silicate in their drinking water at 600 and
1200 ppm.
Special Studies: The mutagenic potential of this material has not been tested. Chemically
similar sodium silicate was not mutagenic to the bacterium E. Coli when
tested in a mutagenicity bioassay. There are no known reports of
carcinogenicity of potassium silicates. Frequent ingestion over extended
periods of time of gram quantities of silicates is associated with the
formation kidney stones and other siliceous urinary calculi in humans.
Potassium silicate is not listed by IARC, NTP or OSHA as a carcinogen.
12. ECOLOGICAL INFORMATION
Ecotoxicity: The ecotoxicity of potassium silicate has not been tested. The following
data is reported for chemically similar sodium silicates on a 100% solids
basis: A 96 hour median tolerance for fish (Gambusia affnis) of 2320
ppm; a 96 hour median tolerance for water fleas (Daphnia magna) of 247
ppm; a 96 hour median tolerance for snail eggs (Lymnea) of 632 ppm;
and a 96 hour median tolerance for Amphipoda of 160 ppm. This
product contains approximately 29.1% potassium silicate.
Environmental Fate: This material is not persistent in aquatic systems, but its high pH when
undiluted or unneutralized is acutely harmful to aquatic life. Diluted
material rapidly depolymerizes to yield dissolved silica in a form that is
indistinguishable from natural dissolved silica. It does not contribute to
BOD. This material does not bioaccumulate except in species that use
silica as a structural material such as diatoms and siliceous sponges.
Where abnormally low natural silica concentrations exist (less than 0.1
Potassium Silicate Solution
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Date Prepared: 11/12/07 Page: 5 of 5
ppm), dissolved silica may be a limiting nutrient for diatoms and a few
other aquatic algal species. However, the addition of excess dissolved
silica over the limiting concentration will not stimulate the growth of
diatom populations; their growth rate is independent of silica
concentration once the limiting concentration is exceeded. Neither silica
nor potassium will appreciably bioconcentrate up the food chain.
Physical/Chemical: Sinks and mixes with water. Only water will evaporate from this
material.
13. DISPOSAL CONSIDERATIONS
Classification: Disposed material is not a RCRA hazardous waste.
Disposal Method: Pesticide Disposal: Wastes resulting from the use of this product may be
disposed of on site or at an approved waste disposal facility.
Container Disposal: Do not reuse container. Completely empty container
into application equipment. Prior to container disposal, rinse out the
container three times with water and empty rinse water into application
equipment. Then dispose of empty container in a sanitary landfill in
accordance with federal, state, and local waste disposal regulations.
14. TRANSPORT INFORMATION
DOT UN Status: This material is not regulated hazardous material for transportation.
15. REGULATORY INFORMATION
CERCLA: No CERCLA Reportable Quantity has been established for this material.
SARA TITLE III: Not an Extremely Hazardous Substance under 搂302. Not a Toxic
Chemical under 搂313. Hazard Categories under 搂搂311/312: Acute
TSCA: All ingredients of this material are listed on the TSCA inventory.
16. OTHER INFORMATION
Prepared by: HSE Department / Erin A. Bendig
Supersedes revision of: 5/18/06
THE INFORMATION ON THIS SAFETY DATA SHEET IS BELIEVED TO BE ACCURATE AND IT IS THE BEST
INFORMATION AVAILABLE TO PQ CORPORATION THIS DOCUMENT IS INTENDED ONLY AS A GUIDE TO THE
APPROPRIATE PRECAUTIONS FOR HANDLING A CHEMICAL BY A PERSON TRAINED IN CHEMICAL HANDLING.
PQ CORPORATION MAKES NO WARRANTY OF MERCHANTABILITY OR ANY OTHER WARRANTY, EXPRESS OR
IMPLIED WITH RESPECT TO SUCH INFORMATION OR THE PRODUCT TO WHICH IT RELATES, AND WE ASSUME NO
LIABILITY RESULTING FROM THE USE OR HANDLING OF THE PRODUCT TO WHICH THIS SAFETY DATA SHEET
RELATES. USERS AND HANDLERS OF THIS PRODUCT SHOULD MAKE THEIR OWN INVESTIGATIONS TO
DETERMINE THE SUITABILITY OF THE INFORMATION PROVIDED HEREIN FOR THEIR OWN PURPOSES.
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