HACH CO. -- LIMESTONE  -- 6630-00-133-0697
<pre>=====================  Product Identification  =====================

Product ID:LIMESTONE
MSDS Date:09/12/1993
FSC:6630
NIIN:00-133-0697
Kit Part:Y
=== Responsible Party ===
Company Name:HACH CO.
Box:389
City:LOVELAND
State:CO
ZIP:80539
Country:US
Info Phone Num:800-227-4224
Emergency Phone Num:800-227-4224 OR 303-623-5716
CAGE:91224
=== Contractor Identification ===
Company Name:HACH CO
Address:5600 LINDBERGH DR
Box:389
City:LOVELAND
State:CO
ZIP:80539
Country:US
Phone:970-669-3050/ 303-623-5716
CAGE:91224
Company Name:HACH COMPANY
Address:100 DAYTON RD.
Box:907
City:AMES
State:IA
ZIP:50010
Country:US
Phone:800-227-4224
CAGE:4T252

=============  Composition/Information on Ingredients  =============

Ingred Name:CALCIUM CARBONATE (MARBLE) (LIMESTONE)
CAS:1317-65-3
RTECS #:EV9580000
Fraction by Wt: 100%
Other REC Limits:NONE RECOMMENDED
OSHA PEL:15 MG/M3 TDUST
ACGIH TLV:10 MG/M3 TDUST; 9394

=====================  Hazards Identification  =====================

Routes of Entry: Inhalation:YES  Skin:NO  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: EXPOSURE MAY CAUSE EYE &
    RESPIRATORY TRACT IRRITATION. EXCESSIVE ORAL DOSES MAY CAUSE
    ALKALOSIS. CHRONIC: NONE SPECIFIED BY MANUFACTURER.
Explanation of Carcinogenicity:NO INGREDIENTS OF A CONCENTRATION OF
    0.1% OR GREATER IS LISTED AS A CARCINOGEN OR SUSPECTED CARCINOGEN.
Effects of Overexposure:EYES: BURNS, TEARING, PAIN, BLURRED VISION,
    REDNESS. INHALED: COUGHING, SNEEZING.
Medical Cond Aggravated by Exposure:NONE REPORTED.

=======================  First Aid Measures  =======================

First Aid:EYE/SKIN CONTACT-IMMEDIATELY FLUSH EYES WITH WATER FOR 15
    MINUTES. CALL PHYSICIAN. FLUSH SKIN WITH LOTS OF WATER. REMOVE
    CONTAMINATED CLOTHES. INGESTED-IF CONSCIOUS, GIVE 1-2 GLASSES OF
    WATER. DO NOT  INDUCE VOMITING! CALL PHYSICIAN IMMEDIATELY.
    INHALED: REMOVE TO FRESH AIR.

=====================  Fire Fighting Measures  =====================

Extinguishing Media:NOT APPLICABLE. DLA-HMIS: MEDIA APPROPRIATE FOR
    SURROUNDING FIRE.
Fire Fighting Procedures:NONE SPECIFIED BY MANUFACTURER. DLA-HMIS:
    FIREFIGHTERS SHOULD WEAR FULL PROTECTIVE CLOTHING INCLUDING
    POSITIVE-PRESSURE SELF-CONTAINED BREATHING APPARATUS.
Unusual Fire/Explosion Hazard:MAY EMIT TOXIC FUMES OF CALCIUM OXIDE AND
    CARBON DIOXIDE IN FIRE.

==================  Accidental Release Measures  ==================

Spill Release Procedures:SWEEP UP SPILL. AVOID BREATHING MATERIAL.
    DISSOLVE IN WATER. FLUSH DOWN DRAIN WITH EXCESS OF WATER.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

======================	Handling and Storage  ======================

Handling and Storage Precautions:STORE TIGHTLY CLOSED IN A COOL, DRY
    PLACE.
Other Precautions:AVOID CONTACT WITH EYES. WASH THOROUGHLY AFTER
    HANDLING.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:NONE NORMALLY REQUIRED. IF ENGINEERING CONTROLS
    FAIL OR NON-ROUTINE USE OR EMERGENCY OCCURS; USE NIOSH/MSHA
    APPROVED RESPIRATOR OR SUPPLIED AIR RESPIRATOR OR SCBA, AS
    REQUIRED. USE IAW 29 CFR 1910.134  AND MANUFACTURER'S
    RECOMMENDATIONS.
Ventilation:PROVIDE ADEQUATE VENTILATION.
Protective Gloves:NONE NORMALLY REQUIRED.
Eye Protection:LAB GRADE GOGGLES
Other Protective Equipment:NONE SPECIFIED BY MANUFACTURER. DLA-HMIS:
    EYE WASH STATION & SAFETY SHOWER.
Work Hygienic Practices:WASH HANDS AFTER USE AND BEFORE EATING,
    DRINKING, OR SMOKING. LAUNDER CONTAMINATED CLOTHES BEFORE REUSE.
Supplemental Safety and Health
KEY1=B3. CHANGE: 8745.

==================  Physical/Chemical Properties  ==================

HCC:C1
Melt/Freeze Pt:M.P/F.P Text:1517F,825C
Decomp Temp:Decomp Text:1517F,825C
Spec Gravity:2.711
Evaporation Rate &amp; Reference:N/K (N-BUTYL ACETATE=1)
Solubility in Water:SLIGHT
Appearance and Odor:WHITE, ODORLESS POWDER.
Corrosion Rate:0.0 IPY

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
STRONG MINERAL ACIDS, FLUORINE, MAGNESIUM WITH HYDROGEN.
Stability Condition to Avoid:CONTACT WITH STRONG MINERAL ACIDS,
    FLUORINE, MAGNESIUM WITH HYDROGEN.
Hazardous Decomposition Products:CALCIUM OXIDE, CARBON DIOXIDE.

====================  Disposal Considerations  ====================

Waste Disposal Methods:DISPOSE OF IN ACCORDANCE WITH LOCAL, STATE AND
    FEDERAL REGULATIONS.

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