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MSDS Material Safety Data Sheet
CAS

7790-28-5

File Name: disupply_com---KleenScreen.msds.asp
                               Material Safety Data Sheet
Date Prepared: April 4, 2001 Date Revised: N/A (First Edition)


1. Identification
Product Name: LAWSON KLEEN SCREEN STENCIL REMOVER CRYSTALS
Distributed by: Lawson Screen Products
5110 Penrose Street
Saint Louis, MO 63115
Emergency Phone: 1-800-424-9300 Chemtrec

Chemical Name: Sodium Meta-periodate
CAS Number: 7790-28-5
Molecular Formula: InaO4

2. Composition
Substance: Sodium Meta-periodate
% Content: 98%

3. Hazards Identification
Physical Appearance: Colorless to white crystals
Warning Statements: Irritant! Irritating to eyes, skin, and respiratory tract. The toxicological
properties of this material have not been fully investigated. Use
appropriate procedures to prevent opportunities for direct contact with
the skin or eyes and to prevent inhalation.

4. First Aid Measures
Eye Contact:
Hold eyelids open and flush with a steady, gentle stream of water for at least 15 minutes. Seek
medical attention if irritation develops or persists or if visual changes occur.

Skin Contact:
Immediately wash with plenty of soap and water for at least 5 minutes. Seek medical attention if
irritation develops or persists. Remove contaminated clothing and shoes. Clean contaminated
clothing or shoes before re-use.

Ingestion:
If victim is conscious and alert, give 2-4 glasses of water to drink. Do Not Induce Vomiting.
Never induce vomiting or give anything by mouth to an unconscious person. Seek immediate
medical attention. Do not leave victim unattended. Vomiting may occur spontaneously. To
prevent aspiration of swallowed product, lay victim on side with head lower than waist.

Inhalation:
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult,
give oxygen . Seek medical attention. Do not leave victim unattended.

5. Fire Fighting Measures
Extinguishing Media:
Water spray, dry chemical foam.




MSDS for KLEEN SCREEN STENCIL REMOVER CRYSTALS
printed 4/4/01 Page 1
Special Firefighting Procedures:
Firefighters should wear NIOSH/MSHA approved self-contained breathing apparatus and full
protective clothing. During a fire, irritating and highly toxic gases may be generated by thermal
decomposition or combustion.

Unusual Fire and Explosion Hazards:
Emits toxic fumes under fire conditions.

Hazardous Decomposition Materials (Under Fire Conditions):
Hydrogen Iodide

6. Accidental Release Measures
Personal Precautions: Wear respirator, chemical safety goggles, rubber boots, and heavy
rubber gloves.

For Spill:
Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools.
Transport outdoors. Ventilate area and wash spill site after material pickup is complete.

Handling and Storage
Handling:
Avoid prolonged and repeated exposure and dust generation. Avoid direct or prolonged contact
with skin and eyes. Avoid ingestion or inhalation.

Storage:
Store in tightly closed containers. Store in an area that is cool and dry.
Keep away from combustible materials, Heat, sparks, and open flame. Hygroscopic.

8. Exposure Controls/Personal Protection
Introductory Remarks:
These recommendations provide general guidelines for handling of this product. Because specific
work environments and material handling practices vary, safety procedures should be developed
for each intended application. While developing safe handling procedures, do not overlook the
need to clean equipment and piping systems for maintenance and repairs. Waste resulting from
these procedures should be handled in accordance with section 13.

Respiratory Protection:
When respirators are required, select NIOSH/MSHA approved equipment based on actual or
potential airborne concentrations and in accordance with the appropriate regulatory standards
and/or industrial recommendations.

Under normal conditions, in the absence of other airborne contaminates, the following devices
should provide protection from the material up to the conditions specified by the appropriate
OSHA standard(s): Air-purifying (half mask/full face) respirator with cartridges/canister approved
for use against dusts, mists, and fumes.




MSDS for KLEEN SCREEN STENCIL REMOVER CRYSTALS
printed 4/4/01 Page 2
Exposure Controls/Personal Protection (Continued)
Eye/Face Protection:
Eye and face protection requirements will vary upon work environment conditions and material
handling practices. Appropriate ANSI Z87 approved equipment should be selected for the
particular use intended for this material.

It is generally regarded as good practice to wear a minimum of safety glasses with side shields
when working in industrial environments.

Skin Protection:
Skin contact should be minimized through the use of gloves and suitable long-sleeved clothing.

Work Practice Controls:
Personal hygiene is an important work practice exposure control measure and the following
general measures should be taken when handling this material:
(1) Do not store, use, and/or consume foods, beverages, tobacco products, or cosmetics in
areas where this material is stored.
(2) Wash hands and face carefully before eating drinking, using tobacco, applying cosmetics,
or using the toilet.
(3) Wash exposed skin promptly to remove accidental splashes of contact with this material.
(4) Use only in a chemical fume hood
(5) Avoid prolonged or repeated exposure.

9. Physical and Chemical Properties
Physical and chemical properties here represent typical properties of this product. Contact the
business area using the Product Information phone number on page 1 for its exact specifications.

Appearance: Colorless to white crystals


10. Stability and Reactivity
Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials and extreme heat
Materials to Avoid: Reducing agents, finely powdered metals, Magnesium.
Hazardous Decomposition Products: Hydrogen Iodide


11. Toxicological Information
May be harmful by inhalation, ingestion or skin absorption. Causes eye, skin, upper respiratory
irritation.

RTECS#: SD4550000
IPR-MUS LD50:58 MG/KG COREAF 257,791,1963
ONLY SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES
(RTECS) DATA IS PRESENTED HERE. SEE ACTUAL ENTRY IN RTECS FOR
COMPLETE INFORMATION
Carcinogenicity: Not listed by ACGIH; IARC; NIOSH; NTP; or OSHA


12. Ecological Information



MSDS for KLEEN SCREEN STENCIL REMOVER CRYSTALS
printed 4/4/01 Page 3
Toxic Substances Control Act (TSCA) Inventory: This material is listed.

13. Disposal Considerations
Chemical additions, processing or otherwise altering this material may make the waste
management information presented in this MSDS incomplete, inaccurate, or otherwise
inappropriate. Please be advised that state and local requirements for waste disposal may be more
restrictive or otherwise different from federal laws and regulations. Consult state and local
regulations regarding proper disposal of this material.

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator
equipped with an afterburner and scrubber

14. Transport Information
US Department of Transportation
Hazard Class: 5.1
DOT Shipping Name: Oxidizing solid, NOS
UN Number: UN1479
Packing Group: II

15. Regulatory Information
FEDERAL REGULATIONS
Inventory Issues: All functional components of this product are listed on the TSCA Inventory.

16. Other Information
References: Aldrich Catalog Handbook for Fine Chemicals, 2000/01
RTECS# XZ3950000
HMIS Implementation Manual


Disclaimer
The information contained herein is based on our experience and technical data. Considering there
are many factors beyond our knowledge and control, we cannot accept liability for any loss,
injury, or damage resulting from reliance upon such information.




MSDS for KLEEN SCREEN STENCIL REMOVER CRYSTALS
printed 4/4/01 Page 4

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