Product ID:ISONATE(R) 143L MODIFIED MDI
MSDS Date:03/20/1988
FSC:6850
NIIN:00N010706
MSDS Number: BHYRX

DOW CHEMICAL USA

MIDLAND, MI 48674

Emergency Phone: 517-636-4400

Info Phone: 517-636-4400

Cage: EO044

DOW CHEMICAL USA

MIDLAND, MI 48640-6030 US

Telephone: 800-258-2436

Cage: EO044

DIPHENYLMETHANE DIISOCYANATE (MDI).

CAS: 26447-40-5

Fraction By Weight: 70-80%

OSHA PEL N/K

ACGIH TLV: N/K

DIPHENYLMETHANE DIISOCYANATE (HOMOPOLYMER)

CAS: 39310-05-9

Fraction By Weight: 20-30%

OSHA PEL N/K

ACGIH TLV: N/K

SHOVEL INTO UNSEALED CONTR,TRANSPORT TO

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

ISOCYANATE).ALLOW TO STAND FOR 48 HRS,LET CO*2

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

DETERGENT,LET STAND AT LEAST 10 MIN.COVER MOPS &

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

INHALATION/SKIN/INGESTION .

RTECS: 9999999ZZ

OSHA PEL N/K

ACGIH TLV: N/K

LD50 LC50 Mixture:LD50 RABBITS SKIN >2000 MG/KG,(SEE SUPP)
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:DECREASED VENTILATORY CAPACITY ASSOC
W/ EXPOS TO SIMILAR ISOCYANATES;IT IS POSS THAT EXPOS TO MDI MAY
CAUSE SIMILAR IMPAIRMENT OF LUNG FUNC.BASED ON AVAIL DATA RPTD
EXPOSURES NOT ANTICIPATED TO CAUSE ANY ADDNL SIGNIFICANT ADVERSE
EFTS.MAJOR ACTIVE INGRED IN THIS MATL SHOWS NEG IN SOME
MUTAGENICITY TESTS,POS IN OTHERS.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:EYES:SLIGHT IRRIT.CORNEAL INJURY
UNLIKELY.SKIN:ALLERGIC RXN IN SUSCEPTIBLE PEOPLE.PRLNG/RPTD EXPOS
MAY CAUSE IRRIT.INGEST:NO HAZ ANTICIPATED FROM INGEST INCIDENTAL TO
INDUSTRIAL EXPOS.INHAL:RESP SENSI T IN SUSCEPTIBLE
PEOPLE.HEATED/AEROSOL SPRAYED (EXCESS EXPOS)-CAUSE IRRIT OF UPPER
RESP TRACT,LUNGS.EFTS MAY BE DELAYED.
Medical Cond Aggravated by Exposure:N/K

First Aid:EYES:IRRIGATE W/ FLOWING WATER IMMED & CONTINUOUSLY FOR AT
LEAST 15 MIN.CONSULT MD.DUE TO HIGH VISC,MAY BE DIFFICULT TO
REMOVE.SKIN:WASH OFF IN FLOWING WATER OR SHOWER.INGEST:NO ADVERSE
EFTS ANTICIPAT ED INCIDENTAL TO PROPER INDUS HANDLING.IHAL:REMOVE
TO FRESH AIR IF EFTS OCCUR.CONSULT MD.MD NOTE:RESP SYMP (PULMONARY
EDEMA) MAY BE DELAYED.MAY CAUSE RESP SENSIT.NO SPEC
ANTIDOTE.SUPPORTIVE CARE.

Flash Point Method:PMCC
Flash Point:>350F,177C
Extinguishing Media:CO*2,DRY CHEM,FOAM,HALON 1211.IF WATER SED,USE IN
VERY LARGE QUANTITIES.RXN OF H*2O & HOT ISOCYANATE MAY BE VIGOROUS.
Fire Fighting Procedures:USE NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT .PROTECT AGAINST NITROGEN OXIDE FUMES &
ISOCYANATE VAP RS.
Unusual Fire/Explosion Hazard:EVACUATE DOWN-WIND PERSONNEL.DO NOT
RESEAL CONTAM CONTRS-PRESS BUILDUP MAY RUPTURE THEM.DECOMP
PROD:ISOCYANATE VAPOR & MIST,CO*2,CO,NITROGEN OXIDES & (SUP DA)

Spill Release Procedures:EVACUATE & VENT AREA,DIKE TO PREVENT ENTRY
INTO WATER SYS,WEAR FULL PROT EQUIP W/ POS PRESS SCBA.MAJOR-CALL
DOW (TRANSPORT SPILL CALL CHEMTREC).USE PROTEIN FOAM FOR VAPOR
CONTROL (AVAIL AT FIRE DEPT). PUMP INTO CLOSED,UNSEALED
CONTR.MINOR-(SEE SUPP)
Neutralizing Agent:WATER & 3-8% CONC AMMONIUM HYDROXIDE OR 5-10% SODIUM
CARBONATE.

Handling and Storage Precautions:STORE INDOORS AT 50-95F IN ORIGINAL
UNOPENED CONTAINERS.PROTECT FROM ATMOSPHERIC MOISTURE.REPLACE
OUTAGE W/ INERT DRY GAS-NITROGEN.
Other Precautions:IMMEDIATE HEALTH HAZARD.DELAYED HEALTH
HAZARD.REACTIVE HAZARD.

Respiratory Protection:NIOSH/MSHA APPROVED RESPIRATOR APPROPRIATE FOR
EXPOSURE OF CONCERN .
Ventilation:LOCAL AND GENERAL VENTILATION NECESSARY TO KEEP AIR
CONCENTRATION BELOW TLV .
Protective Gloves:IMPERVIOUS
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:IMPERVIOUS PROTECTIVE CLOTHING
(BOOTS,APRON,FULL BODY SUIT).
Work Hygienic Practices:REMOVE CONTAM CLOTHING IMMED,WASH SKIN AREA W/
SOAP & WATER,LAUNDER CLOTHING BEFORE REUSE.
Supplemental Safety and Health
VP:0.0003 MMHG @ 25C.EXPLO HAZ:HYDROGEN CYANIDE TRACES.MATLS TO
AVOID:UREA.CO*2 & HEAT PRODUCE PRESS TO RUPTURE CLOSED CONTR.RXN W/
WATER SLOW <49C,120F;ACCELD AT HIGHER TEMP & IN PRESENCE OF ABOVE
MA TLS.SOME RXN VIOLENT.LD50-LC50 MIX:LD50RAT ORAL >5000
MG/KG.SPILL PROC:ABSORB W/ SAWDUST,OTHER ABSORB,(SEE ING 3-6)

Boiling Pt:B.P. Text:597F,313.8C
Melt/Freeze Pt:M.P/F.P Text:N/K
Decomp Temp:Decomp Text:N/K
Vapor Pres:SUPP DATA
Spec Gravity:1.2 (WATER=1)
Evaporation Rate & Reference:N/K
Solubility in Water:REACTS
Appearance and Odor:LIGHT YELLOW LIQUID.ODOR NOT AVAILABLE.

Stability Indicator/Materials to Avoid:YES
WATER,ACID,BASE (ALKALIES,AMMONIA),ALCOHOLS,METAL CMPD,SURF ACTIVE
MATL.WATER REACTS TO FORM HEAT,CO*2,INSOL (SEE SUPP)
Stability Condition to Avoid:STABLE UNDER RECOMMENDED STORAGE
CONDITIONS.
Hazardous Decomposition Products:ISOCYANATE VAPOR &
MIST,CO*2,CO,NITROGEN OXIDES,TRACES OF HYDROGEN CYANIDE.
Conditions to Avoid Polymerization:INCOMPAT REACTANTS,ESP STRONG BASES
(ALKALIES,TERTIARY AMINES,METAL SALTS),H*2O,TEMP >160C.TEMP >49C
ACCEL H*2O RXN.

Waste Disposal Methods:DISPOSAL MUST BE IN ACCORDANCE W/ FEDERAL,STATE
& LOCAL REGS .USUALLY LIQ INCIN;SOLIDS INCIN,LANDFILLED.FILL EMPTY
DRUMS W/ WATER FOR 48 HRS;DRAIN,TRIPLE RINSE,HOLE/CRUSH,DISPOSE IN
LANDFILL,OR OTHER APPROVED PROCEDURE.

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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.