MSDS
MATERIAL SAFETY DATA SHEET
SS-C鈩? Powder Sodium Silicate
Trade Name:
Date Prepared: 03/10/05 Page: 1 of 5
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
Product name: SS-C鈩? Powder Sodium silicate
Product description: A 2.0 weight ratio sodium silicate powder
Manufacturer: PQ Corporation
P. O. Box 840
Valley Forge, PA USA
Phone number: 610-651-4200
In case of emergency call: 1 610-651-4200
For transportation emergency
Call CHEMTREC: 1 800-424-9300
2. COMPOSITION/INFORMATION ON INGREDIENTS
Chemical and Common Name CAS Registry Number Wt. % OSHA PEL ACGIH TLV
Silicic acid, sodium salt; 1344-09-8 ~99% Not Established Not Established
Sodium silicate
Crystalline silica, quartz 14808-60-7 0.1-1% 10 mg/m3 0.05 mg/m3
%SiO2+2 Respirable
=Respirable
30 mg/m3
%SiO2+2
=Total dust
3. HAZARDS IDENTIFICATION
Emergency Overview: White, odorless, powder. Causes mild eye irritation and slight skin
irritation. Causes skin and digestive tract irritation. Dust
irritating to respiratory tract. Due to high pH of product, release
into surface water is harmful to aquatic life. Noncombustible.
Reacts with acids and some organics.
Eye contact: Causes mild irritation to the eyes.
Skin contact: Causes slight irritation to the skin.
Inhalation: Dust irritating to respiratory tract.
Ingestion: May cause irritation to mouth, esophagus, and stomach. Large doses
are harmful if swallowed.
Chronic hazards: Cancer hazard. Contains crystalline silica which can cause cancer
and delayed lung injury (silicosis). Crystalline silica is listed by NTP
as a known human carcinogen, and it is classified by IARC in Group
1: materials for which there is sufficient evidence in humans for
carcinogenicity.
Physical hazards: Contact with water produces alkaline solution.
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4. FIRST AID MEASURES
Eye: In case of contact, immediately flush eyes with plenty of water for at least 15
minutes. Get medical attention.
Skin: In case of contact, immediately flush skin with plenty of water. Remove
contaminated clothing and shoes. Get medical attention.
Inhalation: 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: Wear turnout gear when this material is present in the area of a
fire.
6. ACCIDENTAL RELEASE MEASURES
Personal protection: Wear safety goggles, body-covering clothing, chemical and abrasion-resistant
gloves, and NIOSH-approved respiratory protection appropriate to the level
of hazard where dust occurs. See section 8.
Environmental Hazards: Sinks and slowly dissolves in water. In aqueous solution, the high pH of this
material is harmful to aquatic life; see Section 12.
Small spill cleanup: Carefully shovel or sweep up spilled material and place in suitable container.
Avoid generating dust. Use appropriate Personal Protective Equipment
(PPE). See section 8.
Large spill cleanup: Keep unnecessary people away; isolate hazard area and deny entry. Do not
touch or walk through spilled material. Carefully shovel or sweep up spilled
material and place in suitable container. Avoid generating dust. Use
appropriate Personal Protective Equipment (PPE). See section 8. In case of
contact with water, prevent runoff from entering into storm sewers and
ditches which lead to natural waterways. Neutralize contaminated area and
flush with large quantities of water. Comply with applicable environmental
regulations.
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.
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Date Prepared: 03/10/05 3 of 5
7. HANDLING AND STORAGE
Handling: Avoid contact with eyes, skin and clothing. Avoid breathing dust. Keep
container closed. Promptly clean up spills.
Storage: Keep containers closed. Store in clean steel or plastic containers. Separate
from acids, reactive metals, and ammonium salts. Do not store in aluminum,
fiberglass, copper, brass, zinc or galvanized containers. This product can
absorb water from the air. In case of high humidity or storage for extended
periods of time, use plastic bags to enclose product containers to avoid caking.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Engineering controls: Use with adequate ventilation. Keep containers closed. Safety shower and
eyewash station should be within direct access.
Respiratory protection: Use appropriate NIOSH-approved respiratory protection where dust hazard
may occur. Observe OSHA regulations for respirator use (29 C.F.R.
搂1910.134)
Skin protection: Wear body-covering protective clothing and gloves.
Eye protection: Wear safety goggles.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance: Powder.
Color: White.
Odor: Odorless.
pH: 12.6 (50% w/v slurry in water)
Approximately 90 lbs/ft3
Bulk density:
Solubility in water: Soluble in all proportions. Dissolves slowly at room temperature.
10. STABILITY AND REACTIVITY
Stability: This material is stable under all conditions of use and storage.
Conditions to avoid: None.
Materials to avoid: Generates heat when mixed with acid. May react with ammonium salt
solutions resulting in evolution of ammonia gas. Flammable hydrogen gas
may be produced on contact with aluminum, tin, lead, and zinc when damp
or wet.
Hazardous decomposition
products: Hydrogen.
11. TOXICOLOGICAL INFORMATION
Acute Data: When tested for primary irritation potential, a similar material caused mild
eye irritation and slight skin irritation. Human experience indicates that
irritation occurs when sodium 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 sodium
silicates were tested on a 100% solids basis, their single dose acute oral LD50
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in rats ranged from 1500 mg/kg to 3200 mg/kg. The acute oral lethality
resulted from nonspecific causes.
Subchronic Data: In a study of rats fed 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
sodium silicate administration were observed in any of the dosage groups.
Another study reported adverse effects to the kidneys of dogs fed sodium
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 were reported for rats fed sodium silicate in their drinking water
at 600 and 1200 ppm; also, their offspring had reduced survival to weaning.
Special Studies: This material contains a small amount (0.1-1 Wt.%) of crystalline silica.
Prolonged or repeated inhalation of crystalline silica causes lung diseases
including silicosis, emphysema, obstructive airway disease and lung cancer.
Crystalline silica is listed by NTP as a known human carcinogen, and it is
classified by IARC in Group 1: materials for which there is sufficient
evidence in humans for carcinogenicity.
Sodium silicate was not mutagenic to the bacterium E. Coli when tested in a
mutagenicity bioassay. There are no known reports of carcinogenicity of
sodium silicates. Frequent ingestion over extended periods of time of gram
quantities of silicates is associated with the formation of kidney stones and
other siliceous urinary calculi in humans. Sodium silicate is not listed by
IARC, NTP or OSHA as a carcinogen.
12. ECOLOGICAL INFORMATION
Eco toxicity: The following data is reported for 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.
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 yields 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 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 sodium will appreciably bioconcentrate up the food chain.
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Date Prepared: 03/10/05 5 of 5
Physical/Chemical: Sinks and mixes with water. Only water will evaporate from this material.
13. DISPOSAL CONSIDERATIONS
Classification: Disposed material is not classified as a RCRA Hazardous waste. However,
disposed water solutions containing this material are classified as RCRA
hazardous waste if they exhibit the corrosive characteristic (pH greater than
or equal to12.5) as defined in EPA rules at 40 C.F.R. 搂261.22 (a)(1).
Disposal Method: Dispose in accordance with federal, state and local 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. Reportable as a hazardous substance. Hazard Categories under
搂搂311/312: Acute, Chronic. Check with your Local Emergency Planning
Committee for reportable quantities.
TSCA: All ingredients of this material are listed on the TSCA inventory.
FDA: The use of sodium silicate is authorized by FDA as a boiler water additive for
the production of steam that will contact food pursuant to 21 CFR 搂173.310;
as a component of zinc-silicon dioxide matrix coatings on food contact
surfaces pursuant to 21 CFR 搂175.390(c); as a GRAS substance when
migrating from cotton fabric used in dry food packaging pursuant to 21 CFR
搂182.70; and as a GRAS substance when migrating to food from paper and
paperboard products pursuant to 21 CFR 搂182.90.
16. OTHER INFORMATION
Prepared by: John G. Blumberg
Supersedes revision of: 08/21/03
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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