=====================  Product Identification  =====================

MSDS NAME:BENSEAL
NIIN:01-395-8276
Status Code:A
MSDS Number: CLPRQ
=== Responsible Party ===
Company:NL BAROID DRILLING FLUIDS,INC.
Address:3000 N SAM HOUSTON PKY E
Box:1675
City:HOUSTON
State:TX
ZIP:77251
Country:US
Info Phone Num:713-987-4000
Emergency Phone Num:(713) 987-4000
CAGE:20064
=== Contractor Identification ===
Company:BAROID DRILLING FLUIDS,INC.
Address:3000 N SAM HOUSTON PKY E
Box:1675
City:HOUSTON
State:TX
ZIP:77251
Country:US
Phone:713-987-4000/713-987-5900
CAGE:20064

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

Name:SILICA (LOW CONCENTRATION OF CRYSTALLINE SILICA (QUART),
    CRISTOBALITE AND TRIDYMITE MAY BE PRESENT)
CAS:7631-86-9
= Wt:2.6

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

Reports of Carcinogenicity:NTP:UNKNOWN	  IARC:YES
Health Hazards Acute and Chronic:THIS PRODUCT CONTAINS FREE CRYSTALLINE
    SILICA WHICH ACCORDING TO THE IARC HAS EXHIBITED LIMITED EVIDENCE
    OF CARCINOGENICITY IN HUMANS. PROLONGED INHALATION OF THE POWDER
    MAY RESULT IN SILICOSIS, A NON CANCEROUS LUNG DISEASE. SKIN:
    POTENTIAL IRRITANT; PROLONGED CONTACT MAY CAUSE IRRITATION. EYES:
    IRRITANT. INHALATION: IRRITATION OF LUNGS, NOSE, AND THROAT;
    PROLONGED INHALATION MAY CAUSE LUNG INJURY	OR DISEASE.
Explanation of Carcinogenicity:THIS PRODUCT CONTAINS FREE CRYSTALLINE
    SILICA WHICH ACCORDING TO THE IARC HAS EXHIBITED LIMITED EVIDENCE
    OF CARCINOGENICITY IN HUMANS. PROLONGED INHALATION OF THE POWDER
    MAY RESULT IN SILICOSIS, A NON CANCEROUS LUNG DISEASE.
Effects of Overexposure:THIS PRODUCT CONTAINS FREE CRYSTALLINE SILICA
    WHICH ACCORDING TO THE IARC HAS EXHIBITED LIMITED EVIDENCE OF
    CARCINOGENICITY IN HUMANS. PROLONGED INHALATION OF THE POWDER MAY
    RESULT IN SILICOSIS, A NON CANCEROUS LUNG DISEASE. SKIN: POTENTIAL
    IRRITANT; PROLONGED CONTACT MAY CAUSE IRRITATION. EYES: IRRITANT.
    INHALATION: IRRITATION OF LUNGS, NOSE, AND THROAT; PROLONGED
    INHALATION MAY CAUSE LUNG INJURY  OR DISEASE.

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

First Aid:NO PROCEDURES REQUIRED BEYOND NORMAL PERSONAL HYGIENE, WASH
    ALL CONTACTED AREAS WITH SOAP AND WATER.

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

Extinguishing Media:WATER, FOAM, CARBON DIOXIDE.
Fire Fighting Procedures:BENSEAL WILL NOT SUPPORT COMBUSTION.
Unusual Fire/Explosion Hazard:NO FIRE OR EXPLOSION HAZARD.

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

Spill Release Procedures:NORMAL HOUSEKEEPING; CAUSES SLIPPERY SURFACES
    WHEN WET.

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

Handling and Storage Precautions:STORE IN SHELTERED AREA OR COVER FOR
    MOISTURE PROTECTION.
Other Precautions:AVOID PROLONGED INHALATION.

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

Respiratory Protection:USE A NIOSH APPROVED MECHANICAL FILTER
    RESPIRATOR FOR NONTOXIC DUSTS, IF DUST CONCENTRATION EXCEEDS 10
    MG/M3.
Ventilation:MECHANICAL, GENERAL ROOM VENTILATION. USE LOCAL VENTILATION
    TO MAINTAIN TLV.
Protective Gloves:WORK GLOVES
Eye Protection:GOGGLES
Other Protective Equipment:APRON, EYEWASH STATION.
Supplemental Safety and Health

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

Spec Gravity:2.5
Appearance and Odor:TAN POWDER; ODORLESS

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

Stability Indicator/Materials to Avoid:YES
NONE
Stability Condition to Avoid:NONE
Hazardous Decomposition Products:NONE
Conditions to Avoid Polymerization:WILL NOT OCCUR.

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

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

===================  MSDS Transport Information  ===================

Transport Information:PSN: NOT REGULATED.

 Disclaimer (provided with this information by the compiling agencies):
 This information is formulated for use by elements of the Department
 of Defense.  The United States of America in no manner whatsoever,
 expressly or implied, warrants this information to be accurate and
 disclaims all liability for its use.  Any person utilizing this
 document should seek competent professional advice to verify and
 assume responsibility for the suitability of this information to their
 particular situation.

*** END OF RECORD ***