Product ID:HI-SIL 233
MSDS Date:06/24/1994
FSC:6850
NIIN:01-022-7031
MSDS Number: CGHFV

PPG INDUSTRIES INC

ONE PPG PLACE
PITTSBURGH, PA 15272
US

Emergency Phone: 304-843-1300

Info Phone: 412-434-3131

Preparer: R. KENNETH LEE

Cage: 93915

PPG INDUSTRIES INC CHEMICAL DIVISION

PITTSBURGH, PA 15222-1416 US

Telephone: 304-843-1300

Cage: 93915

SILICA GEL; (SIO2 HYDRATE) (CONTAINS NO DETECTABLE

CAS: 112945-52-5

RTECS: VV7310000

Fraction By Weight: 87% MIN

OSHA PEL 6 MG/M3

ACGIH TLV: 10 MG/M3

TWO YRS. ALTHOUGH PRECIPITATED SILICA WAS

RTECS: 9999999ZZ

MATL WAS CLEARED SOON AFTER DUST EXPOS ENDED. RSLTS

RTECS: 9999999ZZ

A VERY LOW ORDER OF PULMONARY ACTIVITY FOR SYNTHETIC

RTECS: 9999999ZZ

SKIN CONTACT. PERSONAL PROTECTIVE CLOTHING

RTECS: 9999999ZZ

LD50 LC50 Mixture:LD50:(ORAL) >5 G/KG.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA: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.
CHRONIC:AN EPIDEMIOLOGICAL STUDY WAS CONDUCTED WHICH INCL 165
PRECIPITATED SILICA WORKERS WHO HAD BEEN EXPOS AN AVG TIME SPAN OF
8.6 YRS. OF THESE 65 WORKERS, 44 HAD BEEN EXPOS FOR AVG OF 18 YRS.
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:INGEST:CALL MD IMMEDIATELY . INHAL:REMOVE AFFECTED PERSON TO
FRESH AIR. IF IRRITATION OR DISCOMFORT PERSISTS, CONSULT MD.
EYES:FLUSH W/PLENTY OF WATER FOR AT LEAST 15 MINUTES. IF IRRITATION
OR D ISCOMFORT OCCURS, CONSULT MD. SKIN:FLUSH W/PLENTY OF WATER. IF
IRRITATION OR DISCOMFORT OCCURS, CONSULT MD. NOTE TO MD:TREAT
SYMPTOMATICALLY.

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.

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 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.

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
29 CFR 1910.134.
Ventilation:GENERAL OR LOCAL EXHAUST SUFFICIENT TO MAINTAIN EMPLOYEE
EXPOSURE BELOW PELS. OBSERVANCE OF LOWER LIMITS IS ADVISABLE.
Protective Gloves:CLOTH, LEATHER OR RUBBER GLOVES.
Eye Protection:ANSI APPROVED CHEM WORKERS GOGGS .
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
126 MG/M3 FOR PERIODS FROM 6 MONTHS TO (ING 2)

Vapor Pres:NONE
pH:SUPDAT
Solubility in Water:ESSENTIALLY SOLUBLE
Appearance and Odor:WHITE POWDER; ODORLESS.

Stability Indicator/Materials to Avoid:YES
AVOID CALCINING, WHICH MAY RESULT IN CRYSTALLINE FORMATION OR MIXING
W/ADDITIVES MAY ALTER TOXICOLOGICAL PROPERTIES.
Stability Condition to Avoid:HIGH TEMPERTURES (>800C) TREATMENT
(CALCINING). AVOID ALTERATION OF PRODUCT PROPERTIES BEFORE USE.
Hazardous Decomposition Products:NONE.

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.

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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.