Product ID:D-425, DESMODUR N-3390
MSDS Date:03/01/1990
FSC:6850
NIIN:00N026366
MSDS Number: BPGPN

MOBAY CORP COATINGS DIV

MOBAY RD
PITTSBURG, PA 15205-9741
US

Emergency Phone: 412-923-1800;800-424-9300(CHEMTREC)

Info Phone: 800-662-2927

Preparer: B.J.GAMBINO

Cage: IO201

MOBAY CORP COATING DIV

PITTSBURGH, PA 15205-9741 US

Telephone: 800-662-2927

Cage: IO201

PERM. SENSIT MAY BE EITHER TEMPORARY/PERM. CHRONIC

RTECS: 9999999ZZ

EFTS INCLUDING PERM BRAIN & NERVOUS SYS DMG.

RTECS: 9999999ZZ

NONE FOUND.

RTECS: 9999999ZZ

RESP AS NEEDED.GET MD. ASTHMATIC-TYPE SYMPS

RTECS: 9999999ZZ

TREATMENT ESSENTIALLY SYMPTOMATIC. CALL MD.

RTECS: 9999999ZZ

DRINK. DO NOT GIVE ANYTHING BY MOUTH TO

RTECS: 9999999ZZ

MATL. POUR DECONTAM SOLN OVER SPILL AREA & ALLOW

RTECS: 9999999ZZ

OPEN CNTNRS & ADD FURTHER AMTS OF DECONTAM SOLN.

RTECS: 9999999ZZ

STAND FOR 24-48 HRS. WASH DOWN SPILL AREA W/DECONTAM

RTECS: 9999999ZZ

CARBIDE'S TERGITOL TMN-10 (20%) & WATER (80%); CONC

RTECS: 9999999ZZ

ISOCYANIC ACID,HEXAMETHYLENE ESTER,POLYMERS; (HOMOPOLYMER

CAS: 28182-81-2

RTECS: NQ9170000

Fraction By Weight: 90%

HEXANE, 1,6-DIISOCYANO-; (HEXAMETHYLENE DIISOCYANATE)

CAS: 822-06-0

RTECS: MO1740000

Fraction By Weight: <0.15%

ACGIH TLV: 0.005 PPM

EPA Report Quantity: 1 LB

DOT Report Quantity: 1 LB

SOLVENT NAPHTHA (PETROLEUM), LIGHT AROMATIC; (AROMATIC

CAS: 64742-95-6

RTECS: WF3400000

Fraction By Weight: 5%

15 @ 20C.

CAS: 123-86-4

RTECS: AF7350000

Fraction By Weight: 5%

OSHA PEL 150 PPM;200 PPM STEL

ACGIH TLV: 150 PPM;200 PPM STEL

EPA Report Quantity: 5000 LBS

DOT Report Quantity: 5000 LBS

ARE IRRITATING & CAN CAUSE TEARING, REDDENING &

RTECS: 9999999ZZ

CAN

RTECS: 9999999ZZ

TISS & DIGEST TRACT. VOMIT MAY CAUSE ASPIR OF SOLV

RTECS: 9999999ZZ

PREVIOUS RPTD OVEREXPOS/SINGLE LG DOSE, CERTAIN

RTECS: 9999999ZZ

TO ISOCYANATES HAS ALSO BEEN REPORTED TO CAUSE LUNG

RTECS: 9999999ZZ

LD50 LC50 Mixture:SEE INGREDIENTS
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE:INHAL:HDI VAPS/MIST AT CONCS
ABOVE TLV CAN IRRITATE MUC MEMB IN RESP TRACT CAUSING RUNNY NOSE,
SORE THROAT, COUGHING, CHEST DISCOMFORT, SHORT OF BREATH & REDUCED
LUNG FUNCTION. EXPOS WELL ABOVE TLV MAY LEAD TO BRONCH, BRONCHIAL
SPASM& PULM EDEMA. EFTS USUALLY REVERSIBLE. CHEM/HYPERSENSITIVE
(EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ:PNEUM, W/FLU-LIKE SYMPS HAS ALSO BEEN
REPORTED. SOLV VAPS MAY BE IRRIT TO EYES, NOSE & THROAT. SKIN:CAN
CAUSE IRRIT. SOME PERS MAY DEVELOP SKIN SENSIT. RPTD/PRLNGD CNTCT
CAN RESULT IN DRY, DE FATTED & CRACKED SKIN CAUSING INCR
SUSCEPTIBILITY TO INFECTION. DERM MAY OCCUR.SOLVS CAN PENETRATE
SKIN & MAY(SUPP DATA)
Medical Cond Aggravated by Exposure:PERS W/PRE-EXISTING, NONSPECIFIC
BRONCHIAL HYPERREACTIVITY RESPOND TO CONCS INHAL & ASTHMA ATTACK. ASTHMA & OTHER RESP DISORDERS (BRONCH,
EMPHYSEMA), SKIN ALLERGIES, ECZEMA.

First Aid:EYE:FLUSH W/CLEAN, LUKEWARM WATER (LOW PRESS) FOR AT LEAST 15
MIN WHILE LIFTING LIDS. CALL MD FOR IMMED FOLLOW-UP. SKIN:REMOVE
CONTAMD CLTHG IMMED. WASH AFFECTED AREAS THORO W/SOAP & WATER. WASH
CONTA MD CLTHG THORO BEFORE REUSE. FOR SEVEREEXPOS, GET UNDER
SAFETY SHOWER AFTER REMOVING CLTHG, THEN GET MD. LESSER EXPOS:GET
MD IF IRRIT DEVELOPS/PERSISTS. INHAL:MOVE TO FRESH AIR.GIVE
O*2/ARTF (ING 13)

Flash Point Method:SCC
Flash Point:135F,57C
Lower Limits:SEE INGRED
Upper Limits:SEE INGRED
Extinguishing Media:DRY CHEMICAL, CARBON DIOXIDE, FOAM, WATER SPRAY FOR
LARGE FIRES.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPRVD SCBA & FULL PROT EQUIP.
DURING FIRE, HDI VAPS & OTHER IRRITATING, HIGHLY TOXIC GASES MAY BE
GENERATED BY THERMAL DECOMP (SUPP DATA)
Unusual Fire/Explosion Hazard:CLOSED CNTNR MAY EXPLODE WHEN EXPSD TO
EXTREME HEAT/BURST WHEN CONTAMD W/WATER (CO*2 EVOLVED). SOLV VAPS
MAY BE HVR THAN AIR. STAGNANT AIR MAY CAUSE (SUPP DATA)

Spill Release Procedures:EVAC NONESSENTIAL PERS. REMOVE ALL SOURCES OF
IGNIT & VENT AREA. NOTIFY APPROP AUTH IF NEC. PUT ON PERS PROT
EQUIP. DIKE/IMPOUND SPILLED MATL & CONTROL FURTHER SPILLAGE IF
FEASIBLE. COVER W/SAWDUST, V ERMICULITE, FULLER'S EARTH/OTHER
ABSORB(ING 16)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE IN TIGHTLY CLOSED CNTNRS TO PVNT
MOISTURE CONTAM. IDEAL STORAGE TEMPERATURE RANGE FOR EASE OF HNDLG
IS 50-81F. STOR TEMP:-30F (MIN)/122F (MAX).
Other Precautions:AVOID CONTACT W/SKIN & EYES. EMPTY CONTAINERS MUST BE
HANDLED W/CARE DUE TO PRODUCT RESIDUE. DO NOT HEAT OR CUT EMPTY
CONTAINER W/ELECTRIC OR GAS TORCH.

Respiratory Protection:USE NIOSH/MSHA APPROVED RESPIRATOR FOR USE IN
ISOCYANATE CONTAINING ENVIRONMENTS (AIR PURIFYING OR FRESH AIR
SUPPLIED). OBSERVE OSHA REGULATIONS FOR RESPIRATOR USE. FOR MORE
SPECIFIC INFORMATION CONTA CT NEHC .
Ventilation:EXHAUST VENTILATION SUFFICIENT TO KEEP AIRBORNE CONCS OF
HDI & POLYISOCYANATE BELOW RESPECTIVE TLV.
Protective Gloves:CHEMICAL RESISTANT GLOVES.
Eye Protection:CHEM WORK GOG & FULL LENGTH FSHLD.
Other Protective Equipment:APPROPRIATE CLOTHING. SAFETY SHOWERS &
EYEWASH STATIONS.
Work Hygienic Practices:CONTACT LENSES SHOULD NOT BE WORN.
Supplemental Safety and Health
VP:POLYISOCYANATE:APPROX 7.5X10-5 @ 20C. FIRE FIGHT PROC:OR COMBUSTION.
EXPLO HAZ:VAPORS TO ACCUMULATE & TRAVEL ALONG GROUND TO IGNIT
SOURCE WHICH MAY RESULT IN FLASHBACK TO SOURCE OF VAPOR. EFTS OF O
VEREXP:CAUSE SYSTEMIC EFTS SIMILAR TO THOSE IDENTIFIED UNDER ACUTE
INHAL SYMPS. EYE:LIQ, AEROSOLS & VAPS OF PROD (ING 5)

Boiling Pt:B.P. Text:320F,160C
Vapor Pres:SUPP DATA
Spec Gravity:1.1 @ 68F
Solubility in Water:INSOLUBLE
Appearance and Odor:CLEAR, PALE YELLOW LIQUID, SOLVENT ODOR.
Percent Volatiles by Volume:13

Stability Indicator/Materials to Avoid:YES
WATER, AMINES, STRONG BASES, ALCOHOLS, METAL COMPOUNDS AND SURFACE
ACTIVE MATERIALS.
Stability Condition to Avoid:NONE KNOWN
Hazardous Decomposition Products:BY HIGH HEAT AND FIRE:CO*2, CO, NO*X,
HCN, HDI.
Conditions to Avoid Polymerization:CONTACT W/MOISTURE OR OTHER
MATERIALS WHICH REACT W/ISOCYANATES OR TEMPERATURES OVER 400F MAY
CAUSE POLYMERIZATION.

Waste Disposal Methods:WASTE MUST BE DISPOSED OF I/A/W FEDERAL, STATE
AND LOCAL ENVIRONMENTAL CONTROL REGULATIONS. INCINERATION IS
PREFERRED METHOD. DECONTAMINATE CONTAINERS PRIOR TO DISPOSAL.

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.