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MSDS Material Safety Data Sheet
CAS

10213-79-3

File Name: 10213-79-3.asp

                              SIGMA-ALDRICH

Material Safety Data Sheet

Date Printed: 08/NOV/2005
Date Updated: 19/MAR/2004
Version 1.4
According to 91/155/EEC

Classified as Hazardous according to the criteria of EU Annex 1 and
NOHSC.

1 - Product and Company Information

Product Name SODIUM METASILICATE PENTAHYDRATE
Product Number S3514

Company Sigma-Aldrich Pty. Ltd.
12 Anella Avenue
Castle Hill NSW 2154
Australia
Technical Phone # +61 2 9841 0555 (1800 800 097)
Fax +61 2 9841 0500 (1800 800 096)
Emergency Phone # +44 8701906777 (1800 448 465)

2 - Composition/Information on Ingredients

Product Name CAS # EC no Annex I
Index Number
SODIUM METASILICATE PENTAHYDRATE 10213-79-3 229-912-9 014-010-00-8

Formula Na2O3Si 路 5H2O
Molecular Weight 212.1 AMU
Synonyms Crystamet * Dorimetakeiso 5aq * Dry Metakeiso
5aq * Metso granular * Sodium metasilicate
pentahydrate * Sodium silicate hydrate
(Na2SiO3.5H2O)

3 - Hazards Identification

SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Causes burns. Irritating to respiratory system.


4 - First Aid Measures

AFTER INHALATION
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.

AFTER SKIN CONTACT
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.

AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.

AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician immediately.

5 - Fire Fighting Measures

EXTINGUISHING MEDIA
Suitable: Water spray. Carbon dioxide, dry chemical powder, or
appropriate foam.

SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.

SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.

6 - Accidental Release Measures

PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area.

PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear self-contained breathing apparatus, rubber boots, and heavy
rubber gloves.

METHODS FOR CLEANING UP
Sweep up, place in a bag and hold for waste disposal. Ventilate
area and wash spill site after material pickup is complete.

7 - Handling and Storage

HANDLING
Directions for Safe Handling: Do not breathe dust. Do not get in
eyes, on skin, on clothing. Avoid prolonged or repeated exposure.

STORAGE
Conditions of Storage: Keep tightly closed.

8 - Exposure Controls / Personal Protection

ENGINEERING CONTROLS
Safety shower and eye bath. Use only in a chemical fume hood.

GENERAL HYGIENE MEASURES
Wash contaminated clothing before reuse. Discard contaminated
shoes. Wash thoroughly after handling.

PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.

9 - Physical and Chemical Properties

Appearance Physical State: Solid
Color: White

Property Value At Temperature or Pressure

pH N/A
BP/BP Range N/A
MP/MP Range N/A
Flash Point N/A


SIGMA - S3514 www.sigma-aldrich.com Page 2
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits N/A
Vapor Pressure N/A
SG/Density N/A
Partition Coefficient N/A
Viscosity N/A
Vapor Density N/A
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility N/A

10 - Stability and Reactivity

STABILITY
Stable: Stable.
Materials to Avoid: Strong oxidizing agents.

HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Silicon oxide.

HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur

11 - Toxicological Information

RTECS NUMBER: VV9287500

ACUTE TOXICITY

LD50
Oral
Rat
847 mg/kg

SIGNS AND SYMPTOMS OF EXPOSURE
Inhalation may result in spasm, inflammation and edema of the
larynxand bronchi, chemical pneumonitis, and pulmonary edema.
Symptoms of exposure may include burning sensation, coughing,
wheezing, laryngitis, shortness of breath, headache, nausea, and
vomiting. Material is extremely destructive to tissue of the
mucous membranes and upper respiratory tract, eyes, and skin. To
the best of our knowledge, the chemical, physical, and
toxicological properties have not been thoroughly investigated.

ROUTE OF EXPOSURE
Skin Contact: Causes burns.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes burns.
Inhalation: May be harmful if inhaled. Material is irritating to
mucous membranes and upper respiratory tract.
Ingestion: May be harmful if swallowed.



SIGMA - S3514 www.sigma-aldrich.com Page 3
12 - Ecological Information

No data available.

13 - Disposal Considerations

SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. Dissolve or mix the material with a combustible
solvent and burn in a chemical incinerator equipped with an
afterburner and scrubber. Observe all federal, state, and local
environmental regulations.

14 - Transport Information

RID/ADR
UN#: 3253
Class: 8
PG: III
Proper Shipping Name: Disodium trioxosilicate

IMDG
UN#: 3253
Class: 8
PG: III
Proper Shipping Name: Disodium trioxosilicate
Marine Pollutant: No
Severe Marine Pollutant: No

IATA
UN#: 3253
Class: 8
PG: III
Proper Shipping Name: Disodium trioxosilicate
Inhalation Packing Group I: No

15 - Regulatory Information

CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
ANNEX I INDEX NUMBER: 014-010-00-8
INDICATION OF DANGER: C
Corrosive.
R-PHRASES: 34-37
Causes burns. Irritating to respiratory system.
S-PHRASES: 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of
water and seek medical advice. Wear suitable protective
clothing, gloves, and eye/face protection. In case of accident
or if you feel unwell, seek medical advice immediately (show
the label where possible).

SWITZERLAND
SWISS POISON CLASS: 3

16 - Other Information

WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any


SIGMA - S3514 www.sigma-aldrich.com Page 4
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.

DISCLAIMER
For R&D use only. Not for drug, household or other uses.




SIGMA - S3514 www.sigma-aldrich.com Page 5

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