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MSDS 
:
 Sodium metasilicate pentahydrate
CAS 
:
 6834-92-0
SYNONYMS 
:
 Disodium metasilicate pentahydrate; Disodium trioxosilicate     pentahydrate.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 10213-79-3 |Sodium metasilicate pentahydrate | 100 | unlisted |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: C
Risk Phrases: 22 34 37

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

EMERGENCY OVERVIEW
Harmful if swallowed. Causes burns. Irritating to respiratory
system.

Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye
burns.
Skin:
Contact with skin causes irritation and possible burns, especially
if the skin is wet or moist.
Ingestion:
May cause severe gastrointestinal tract irritation with nausea,
vomiting and possible burns. May be harmful if swallowed.
Inhalation:
May cause severe irritation of the upper respiratory tract with
pain, burns, and inflammation.
Chronic:
Chronic inhalation may cause effects similar to those of acute
inhalation.

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

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid 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 medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give
anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
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. Substance is noncombustible.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.

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

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Avoid generating dusty conditions. Provide ventilation.

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

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Minimize dust
generation and accumulation. Do not get in eyes, on skin, or on
clothing. Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances.

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

Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate
ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 6834-92-0:

CAS# 10213-79-3:


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: Solid
Color: white
Odor: Not available.
pH: 12.6 (1% soln)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 72 deg C
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: Very soluble in water
Specific Gravity/Density: 1.75
Molecular Formula: Na2SiO3.5H2O
Molecular Weight: 212.74

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

Chemical Stability:
Stable.
Conditions to Avoid:
Dust generation.
Incompatibilities with Other Materials:
Acids, fluorine, Flammable hydrogen gas may be produced on prolonged
contact with materials such as aluminum, tin, lead, and zinc..
Hazardous Decomposition Products:
Toxic fumes of sodium oxide.
Hazardous Polymerization: Has not been reported.

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

RTECS#:
CAS# 6834-92-0: VV9275000
CAS# 10213-79-3: VV9287500
LD50/LC50:
CAS# 6834-92-0: Draize test, rabbit, skin: 250 mg/24H Severe; Oral,
mouse: LD50 = 770 mg/kg; Oral, rat: LD50 = 1153 mg/kg.
CAS# 10213-79-3: Oral, rat: LD50 = 847 mg/kg.
Carcinogenicity:
Sodium metasilicate anhydrous -
Not listed by ACGIH, IARC, or NTP.
Sodium metasilicate pentahydrate -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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



**** 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: DISODIUM TRIOXOSILICATE
Hazard Class: 8
UN Number: 3253
Packing Group: III
IMO
Shipping Name: DISODIUM TRIOXOSILICATE
Hazard Class: 8
UN Number: 3253
Packing Group: III
RID/ADR
Shipping Name: DISODIUM TRIOXOSILICATE
Hazard Class: 8
UN Number: 3253
Packing group: III

**** 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 34 Causes burns.
R 37 Irritating to respiratory system.
Safety Phrases:
S 13 Keep away from food, drink and animal feeding
stuffs.
S 24/25 Avoid contact with skin and eyes.
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# 6834-92-0: 1
CAS# 10213-79-3: 1
Canada
CAS# 6834-92-0 is listed on Canada's DSL List.
CAS# 6834-92-0 is listed on Canada's Ingredient Disclosure List.
CAS# 10213-79-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 6834-92-0 is listed on the TSCA inventory.
CAS# 10213-79-3 is not on the TSCA Inventory because it is a hydrate.
It is considered to be listed if the CAS number for the anhydrous form
is on the inventory (40CFR720.3(u)(2)).

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

Text for R-phrases from Section 2
MSDS Creation Date: 12/12/1997 Revision #6 Date: 3/23/2005

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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