THORO SYSTEMS PRODUCTS -- THOROPATCH -- 5610-01-339-8340 
=====================  Product Identification  =====================

Product ID:THOROPATCH
MSDS Date:07/01/1992
FSC:5610
NIIN:01-339-8340
=== Responsible Party ===
Company Name:THORO SYSTEMS PRODUCTS
Address:7800 NW 38TH ST
City:MIAMI
State:FL
ZIP:33166
Country:US
Info Phone Num:305-597-8100
Emergency Phone Num:305-597-8100
Preparer's Name:C GARY LOPEZ
CAGE:1DM95
=== Contractor Identification ===
Company Name:SELBY BATTERSBY & CO
Address:5220 WHITBY
Box:City:PHILADELPHIA
State:PA
ZIP:19143-3211
Country:US
Phone:215-474-4790
CAGE:86937
Company Name:THORO SYSTEMS PRODUCTS INC
Address:7800 NW 38TH ST
Box:City:MIAMI
State:FL
ZIP:33166-6506
Country:US
CAGE:1DM95

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

Ingred Name:SILICA, CRYSTALLINE - QUARTZ
CAS:14808-60-7
RTECS #:VV7330000
Fraction by Wt: 70-80%
OSHA PEL:SEE TABLE Z-3
ACGIH TLV:0.1 MG/M3 RDUST

Ingred Name:CALCIUM HYDROXIDE (LIME)
CAS:1305-62-0
RTECS #:EW2800000
Fraction by Wt: 1-5%
OSHA PEL:15 MG/M3 TDUST
ACGIH TLV:5 MG/M3

Ingred Name:SILICATE, PORTLAND CEMENT
CAS:65997-15-1
RTECS #:VV8770000
Fraction by Wt: 20-30%
OSHA PEL:50 MPPCF; Z-3
ACGIH TLV:10 MG/M3 TDUST

Ingred Name:FIRST AID PROC: WATER TO DRINK & REFER TO MED PERSONNEL.
    INHAL: REMOVE TO FRESH AIR. IF COUGH, IRRIT, DFCLTY IN (ING 5)
RTECS #:9999999ZZ

Ingred Name:ING 4: BRTHG/OTHER RESP SYMPS PERSIST/DEVELOP CONSULT PHYS.
    NOTE TO PHYS: MUCOSAL INJURY FOLLOWING INGEST OF (ING 6)
RTECS #:9999999ZZ

Ingred Name:ING 5: THIS MATL MAY CONTRAINDICATE THE INDUCTION OF VOMIT
    IN TREATMENT OF POSSIBLE INGESTION.
RTECS #:9999999ZZ

Ingred Name:SPILL PROC: MAY BE SLIPPERY. USE CAUTION TO AVOID FALLS.
RTECS #:9999999ZZ

Ingred Name:WASTE DISP METH: OF RESIDUAL PRODS. OBSERVE ALL HAZARD
    PRECAUTIONS & PERSONAL PROT RECS WHEN HNDLG EMPTY CNTNRS. (ING 9)
RTECS #:9999999ZZ

Ingred Name:ING 8: DISPOSE OF AS NON-HAZARDOUS WASTE IN COMPLIANCE WITH
    APPLICABLE REGULATIONS.
RTECS #:9999999ZZ

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

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:YES    IARC:YES	  OSHA:NO
Health Hazards Acute and Chronic:ACUTE: INGEST: NO TOXIC EFTS ARE KNOWN
    TO BE ASSOC W/INGEST OF THIS MATL. MAY CAUSE IRRIT TO DIGESTIVE
    TRACT IF INGESTED. EYE CONT: MATL CAN IRRITATE & MAY BURN EYES
    FOLLOWING DIRECT CONT. AGGREGATE P ARTICLES MAY CAUSE ABRASIONS TO
    CORNEA.SKIN: DRYNESS, ITCHNG, RASHES & BURNS CAN DEVELOP FOLOWING
    (ETS OF OVEREXP)
Explanation of Carcinogenicity:SILICA, CRYSTALLINE-QUARTZ: IARC MONO,
    VOL 68, 1997: GROUP 1. NTP 7TH ANNUAL RPT ON CARCIN, 1994: ANTIC TO
    BE CARCIN.
Effects of Overexposure:HLTH HAZ: CONT W/SKIN. SKIN ABRASIONS CAN OCCUR
    IF MATL IS RUBBED AGAINST SKIN. DERM & SKIN SENSITIZ CAN DEVELOP
    AFTER RPTD AND/OR PRLNGD SKIN CONT. SKIN ABSORP: MATL IS NOT
    ABSORBED THRU SKIN CONT &  NO SYSTEMICALLY TOXIC EFTS ARE KNOWN VIA
    THIS ROUTE. INHAL: PROD CNTNS CRYSTALLINE QUARTZ ("FREE") SILICA.
    (SUPDAT)
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

First Aid:SKIN: RINSE FREE OF MATL W/WATER TO AVOID ABRASION OF SKIN.
    DO NOT RUB UNTIL SKIN IS FREE OF MATL THEN WASH THORO W/SOAP &
    WATER. IF REDNESS, ITCHING, BURNING/OTHER SYMPS DEVELOP/PERSISTS
    SEEK MED ATT N. REMOVE & DECONTAMINATE CLTHG & FOOTWEAR BEFORE
    CAUSE. EYES: DO NOT RUB. RINSE IMMED W/PLENTY OF WATER FOR @ LST 15
    MINS. IF SYMPS PERSIST CONSULT PHYS IMMED. INGEST: GIVE 1-2 GLASSES
    OF (ING 4)

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

Extinguishing Media:NOT APPLICABLE. MEDIA SUITABLE FOR SURROUNDING FIRE
    .
Fire Fighting Procedures:NOT APPLICABLE. USE NIOSH APPROVED SCBA & FULL
    PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:NONE.

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

Spill Release Procedures:KEEP UNNEC PEOPLE AWAY. FOLLOW PERSONAL PROT
    PROC WHEN CLEAN UP SPILLS. COLLECT SPILLED POWDER BY DUSTLESS METH
    & PLACE IN CNTNRS. IF NEC, DIKE SPILLS OF MIXED MATL W/ABSORB MATL
    & SHOVEL INTO WASTE C NTNRS. AVOID GENERATING DUSTS. WET MATL(ING
    7)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:STORE IN COOL DRY AREA OFF GROUND.
    AVOID CONTACT WITH ACIDS & OTHER OXIDIZERS. MINIMIZE GENERATION OF
    DUSTS. AVOID SKIN & EYE CONTACT.
Other Precautions:AVOID BREATHING DUSTS. A SENSITIZED INDIVIDUAL SHOULD
    NOT BE EXPOSED TO THE PRODUCT WHICH CAUSES SENSITIZATION. NO TLV
    ASSIGNED TO THIS MIX. MINIMIZE EXPOS I/A/W GOOD HYGIENE PRACTICES.

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

Respiratory Protection:WHERE EXPOSURE TO DUSTS FROM THIS PRODUCT MAY
    EXCEED THE APPLICABLE EXPOSURE LIMITS A NIOSH APPRVD RESPIRATOR FOR
    THE DUST SHOULD BE USED.
Ventilation:USE LOCAL EXHAUST WHEN POSS TO KEEP EXPOS BELOW APPLIC
    EXPOS LIMITS FOR SILICA, PORTLAND CEMENT, & NUISANCE DUSTS.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:ASNI APPRVD EYE WASH & DELUGE SHOWER .
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
EFTS OF OVEREXP: RPTD INHAL OF SILICA IN EXCESS OF TLV OVER EXTENDED
    PERIODS CAN RSLT IN IRREVERSIBLE FIBROSIS OF LUNGS (SILICOSIS).
    OVEREXP TO DUSTS CAN IRRITATE RESP TRACT & CAN CAUSE DMG TO MUC MEM
    B OF UPPER RESP TRACT. IARC HAS ASSOC HIGH EXPOS TO CRYSTALLINE
    SILICA W/CANCER IN LAB ANIMALS.

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

Evaporation Rate & Reference:NOT KNOWN
Solubility in Water:SLIGHT
Appearance and Odor:GRAY POWDERED SOLID. NO PARTICULAR ODOR.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS SUCH AS ORGANIC & INORGANIC ACIDS. ACIDS WILL
    REACT WITH CEMENT, LIME AND CARBONATES.
Stability Condition to Avoid:PROD REACTS (HYDRATES) AT SLOW, CONTROLLED
    RATED WHEN MIXED W/WATER RELEASING MINIMAL HEAT. NOT HAZARDOUS
    REACTION.
Hazardous Decomposition Products:NONE.

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

Waste Disposal Methods:REUSE POWDER/MIXED MATL IF UNCONTAMD. DISCARDED
    PROD & HARDENED MORTAR ARE NON-HAZ WASTES UNDER RCRA (40 CFR, PART
    261). DISPOSE OF AS NONHAZ WASTE IN COMPLIANCE W/APPLIC FED, STATE,
    AND LOC REGS. CNT NR DISP: EMPTY CNTNS MAY RETAIN SM AMTS(ING 8)

 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.