MSDS
MATERIAL SAFETY DATA SHEET
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Trade Name: METSO PENTABEAD 20 Sodium Metasilicate, pentahydrate
Date Prepared: 01/24/06 Page: 1 of 5
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
Product name: METSO PENTABEAD庐 20 Sodium Metasilicate, pentahydrate
Product description: Granular sodium metasilicate, pentahydrate
Manufacturer: PQ Corporation
P. O. Box 840
Valley Forge, PA 19482 USA
Telephone: 610-651-4200
In case of emergency call: 610-651-4200
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
Silicic acid, disodium salt; 6834-92-0 ~58% Not Established* Not Established*
Disodium trioxosilicate;
Sodium metasilicate
Water 7732-18-5 ~42% Not Established Not Established
Manufacturer鈥檚 recommended exposure limit is 2 mg/m3 Ceiling Limit.
*
3. HAZARDS IDENTIFICATION
Emergency Overview: White, odorless, granular powder. Corrosive to eyes, skin, and
digestive tract. Dust corrosive 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: Corrosive. Causes eye burns.
Skin contact: Corrosive. Causes skin burns.
Inhalation: Dust corrosive to respiratory tract.
Ingestion: Corrosive. Causes burns to mouth, esophagus, and stomach.
Chronic hazards: No known chronic hazards. Not listed by NTP, IARC or OSHA
as a carcinogen.
Physical hazards: Can etch glass if not promptly removed.
4. FIRST AID MEASURES
Eye: In case of contact, immediately flush eyes with plenty of water for at least
15 minutes. If easy to do, remove contact lenses, if worn. Get medical
attention immediately.
Skin: In case of contact, immediately flush skin with plenty of water for at least
15 minutes while removing contaminated clothing and shoes. Get
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Trade Name: METSO PENTABEAD 20 Sodium Metasilicate,pentahydrate
Date Prepared: 01/24/06 Page: 2 of 5
medical attention immediately. Wash clothing before reuse. Thoroughly
clean shoes before reuse.
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: 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, NIOSH-approved dust respirator
where dust occurs. See section 8.
Environmental Hazards: Sinks and mixes with water. 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.
7. HANDLING AND STORAGE
Handling: Do not get in eyes, on skin, or on clothing. Do not breathe dust. Keep
container closed. Promptly clean up spills. Wash thoroughly after
handling.
Storage: Store at temperatures below 150潞F (65潞C). Keep containers closed. Store
in clean, tightly closed steel, fiber, 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
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Trade Name: METSO PENTABEAD 20 Sodium Metasilicate,pentahydrate
Date Prepared: 01/24/06 Page: 3 of 5
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. Packaged inventory should be used on a first in, first out
(FIFO) basis. Bulk storage bins should be painted white or aluminum to
minimize sun-heat absorption which can cause melting of this material at
about 160潞F.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Engineering controls: Use only with adequate ventilation. Keep containers closed. Safety
shower and eyewash fountain should be within direct access.
Respiratory protection: Use a NIOSH-approved dust respirator where dust occurs. 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 chemical goggles.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance: Granular powder.
Color: White.
Odor: Odorless or musty odor.
pH: Approximately 14
Approximately 49 lbs/ft3 untamped, 59 lbs/ft3 tamped.
Bulk density:
Solubility in water: Soluble.
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.
Carbon monoxide gas may be produced on contact with reducing sugars.
Hazardous decomposition
products: Hydrogen.
11. TOXICOLOGICAL INFORMATION
Acute Data: This material has not been tested for primary eye irritation potential.
However, on the basis of its high degree of alkalinity, it is regarded as
corrosive to the eyes.
When this material was tested for skin corrosion/irritation potential
according to OECD Guidelines Section 404, it produced dermal
corrosion.
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 in rats ranged from 1500 mg/kg to 3200 mg/kg. The acute oral
lethality resulted from nonspecific causes.
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Trade Name: METSO PENTABEAD 20 Sodium Metasilicate,pentahydrate
Date Prepared: 01/24/06 Page: 4 of 5
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 and survival to weaning was reported for rats fed
sodium silicate in their drinking water at 600 and 1200 ppm.
Special Studies: 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 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.
Physical/Chemical: Sinks and dissolves in water.
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Trade Name: METSO PENTABEAD 20 Sodium Metasilicate,pentahydrate
Date Prepared: 01/24/06 Page: 5 of 5
13. DISPOSAL CONSIDERATIONS
Classification: Disposed dry/solid material is not classified as a RCRA Hazardous waste.
However, disposed water/wet 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 a regulated hazardous material.
UN PROPER SHIPPING NAME: Disodium Trioxosilicate, Pentahydrate
UN HAZARD CLASS/DIVISION 8
UN IDENTIFICATION NUMBER: UN3253
UN PACKING GROUP: PG III
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.
FDA: The use of sodium metasilicate 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; and as a GRAS substance pursuant to 21 CFR
搂184.1769afor use in washing and lye peeling of fruits, vegetables, and
nuts; as a denuding agent for tripe; a hog scald agent in removing hair;
and as a corrosion preventative in canned and bottled water.
16. OTHER INFORMATION
Prepared by: John G. Blumberg
Supersedes revision of: 11/11/05
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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