*  Exposure Controls/Personal Protection  *
Respiratory Protection:USE NIOSH APPROVED DUST FILTER RESPIRATOR FOR
    EXPOSURE ABOVE PELS. RESPIRATORY USE LIMITATIONS MADE BY NIOSH OR
    MFR MUST BE OBSERVED. RESPIRATORY PROTECTION PROGRAMS MUST BE I/A/W
Ventilation:GENERAL OR LOCAL EXHAUST SUFFICIENT TO MAINTAIN EMPLOYEE
    EXPOSURE BELOW PELS. OBSERVANCE OF LOWER LIMITS IS ADVISABLE.
Other Protective Equipment:ANSI APPRVD EYE WASH FOUNTAIN & DELUGE
    SHOWER . BOOTS, APRONS/CHEM SUITS SHOULD BE USED WHEN NEC TO PVNT
    (ING 5)
Work Hygienic Practices:WASH THOROUGHLY EVERYDAY AFTER WORK.
Supplemental Safety and Health
PH:6.5-7.3 (5% SUSPENSION). EFTS OF OVEREXP:OF THESE WORKERS. PULM FUNC
    DECREMENTS WERE CORRELATED ONLY W/SMOKING & AGE BUT NOT W/DEGREE OR
    DURATION OF DUST EXPOS. LAB STUDIES HAVE ALSO BEEN CONDUCTED  IN SM
    ANIMALS VIA INHAL TO LEVELS OF PRECIPITATED SILICA DUST OF UP TO
*  Product Identification  *
Preparer's Name:R. KENNETH LEE
*  Composition/Information on Ingredients  *
Ingred Name:SILICA GEL; (SIO2 HYDRATE) (CONTAINS NO DETECTABLE
OSHA PEL:6 MG/M3
Ingred Name:SUPP DATA:TWO YRS. ALTHOUGH PRECIPITATED SILICA WAS
    TEMPORARILY DEPOSITED IN ANIMALS' LUNGS, MOST OF DEPOSITED (ING 3)
Ingred Name:ING 2:MATL WAS CLEARED SOON AFTER DUST EXPOS ENDED. RSLTS
    OF ALL STUDIES PERFORMED BY, OR KNOWN TO, PPG INDICATE (ING 4)
Ingred Name:ING 3:A VERY LOW ORDER OF PULMONARY ACTIVITY FOR SYNTHETIC
    PRECIPITATED SILICAS.
Ingred Name:OTHER PROT EQUIP:SKIN CONTACT. PERSONAL PROTECTIVE CLOTHING
*  Hazards Identification  *
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NOOSHA:NO
Health Hazards Acute and Chronic:ACUTE:EXCESSIVE CONT W/POWDER CAN
    CAUSE DRYING OF MUC MEMBS OF NOSE, EYES & THROAT DUE TO ABSORPTION
    OF MOISTURE & OILS. THIS MATL CAN ALSO CAUSE NASAL IRRIT &
    NOSEBLEEDS. EYE CONT W/POWDER CAN RSLT I N MILD IRRIT. PRLNG/RPTD
    INHAL OF DUST MAY IRRIT RESP TRACT. EYE CONT MAY CAUSE IRRIT &
    PAIN. SKIN CONT(EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ:MAY CAUSE IRRIT & DISCOMFORT.
    PRECIPITATED SILICA WORKERS WHO HAD BEEN EXPOS AN AVG TIME SPAN OF
    NO ADVERSE EFTS WERE NOTED IN COMPLETE MED EXAMS (INCL CHEST
    ROENTGENOGRAMS) (SUPDAT)
Medical Cond Aggravated by Exposure:PPG RECOMMENDS THAT PERSONS
    W/BREATHING PROBLEMS OR LUNG DISEASE SHOULD NOT WORK IN DUSTY AREAS
    UNLESS MD APPROVES & CERTIFIES THEIR FITNESS TO WEAR NIOSH APPROVED
    RESPIRATORY PROTECTION.
*  First Aid Measures  *
First Aid:INGEST:CALL MD IMMEDIATELY . INHAL:REMOVE AFFECTED PERSON TO
    FRESH AIR. IF IRRITATION OR DISCOMFORT PERSISTS, CONSULT MD.
    OR D ISCOMFORT OCCURS, CONSULT MD. SKIN:FLUSH W/PLENTY OF WATER. IF
    IRRITATION OR DISCOMFORT OCCURS, CONSULT MD. NOTE TO MD:TREAT
    SYMPTOMATICALLY.
*  Fire Fighting Measures  *
Flash Point:NONE
Extinguishing Media:MEDIA SUITABLE FOR SURROUNDING FIRE .
Fire Fighting Procedures:USE NIOSH APPROVED SCBA & FULL PROTECTIVE
    EQUIPMENT .
Unusual Fire/Explosion Hazard:NONE.
*  Accidental Release Measures  *
Spill Release Procedures:VACUUM SPILLED MATERIAL & PLACE IN CLOSED
    PLASTIC BAGS FOR DISPOSAL. SEE SPECIAL PROTECTION INFORMATION
    SECTION FOR PERSONAL PROTECTION INFORMATION.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.
*Handling and Storage  *
Handling and Storage Precautions:STORE IN DRY AREA. AVOID PROLONGED OR
    REPEATED INHALATION OF DUST. AVOID CONTACT W/EYES. AVOID PROLONGED,
    REPEATED OR EXCESSIVE CONTACT W/SKIN.
Other Precautions:USE W/ADEQUATE VENTILATION. DO NOT EAT, DRINK OR
    SMOKE IN WORK AREA.
*  Physical/Chemical Properties  *
Vapor Pres:NONE
pH:SUPDAT
Solubility in Water:ESSENTIALLY SOLUBLE
Appearance and Odor:WHITE POWDER; ODORLESS.
*  Stability and Reactivity Data  *
Stability Indicator/Materials to Avoid:YES
AVOID CALCINING, WHICH MAY RESULT IN CRYSTALLINE FORMATION OR MIXING
    W/ADDITIVES MAY ALTER TOXICOLOGICAL PROPERTIES.
    (CALCINING). AVOID ALTERATION OF PRODUCT PROPERTIES BEFORE USE.
Hazardous Decomposition Products:NONE.
*  Disposal Considerations  *
Waste Disposal Methods:DISPOSAL MUST BE I/A/W FEDERAL, STATE & LOCAL
    REGULATIONS . WASTE FROM THIS PRODUCT MAY BE DISPOSED OF IN A
    SANITARY LANDFILL IF STATE & LOCAL REGULATIONS PERMIT. CARE SHOULD
    BE EXERCISED TO AVO ID CREATION OF DUST DURING DISPOSAL OPERATIONS.
