Product ID:SEALTIGHT COLD APPLIED SOF SEAL COMPONENT A
MSDS Date:04/29/1991
FSC:8030
NIIN:00F017563
MSDS Number: BWHMQ

W R MEADOWS, INC

46 W 185 ALLEN RD
HAMPSHIRE, IL 60140-5000
US

Emergency Phone: 708-683-4500

Info Phone: 708-683-4500

Cage: FO891

W R MEADOWS, INC

338 HAMPSHIRE, IL 60140-5000 US

Telephone: 708-683-4500

Cage: FO891

1,1'-METHYLENEBIS(ISOCYANATO-BENZENE), DIPHENYLMETHANE

CAS: 26447-40-5

Fraction By Weight: 40-45%

HIGHER OLIGOMERS OF MDI, POLYMETHYLENE POLYPHENYLENE

CAS: 9016-87-9

RTECS: TR0350000

Fraction By Weight: 50-55%

LD50 LC50 Mixture:ORAL LD50(RAT): >10,000 MG/KG
Routes of Entry: Inhalation:YES Skin:NO Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:EYES: IRRITANT. SKIN: ALLERGIC
REACTION IN SOME INDIVIDUALS, IRRITANT. INHALATION: IRRITANT TO
NOSE/THROAT/RESPIRATORY TRACT/MUCOUS MEMBRANES, ISOCYANATE
SENSITIZATION IN SOME INDIVIDUALS, LUNG DAMAGE , BRONCHITIS,
BRONCHIAL SPASMS, PULMONARY EDEMA, CHEMICAL/HYPERSENSITIVE
PNEUMONITIS. INGESTION: GI TRACT IRRITANT.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:PAIN, TEARING, REDDENING, SWELLING, IRRITATION,
RASH, REDNESS, RUNNY NOSE, SORE THROAT, COUGHING, CHEST DISCOMFORT,
SHORTNESS OF BREATH, WHEEZING, NAUSEA, VOMITING, DIARRHEA, CHEST
TIGHTNESS, SKIN STA INS.
Medical Cond Aggravated by Exposure:SKIN/EYE & RESPIRATORY
DISORDERS/ASTHMATIC-TYPE SYMPTOMS/CHRONIC BRONCHITIS/CHRONIC
RESPIRATORY DISEASES/RECURRENT SKIN ECZEMA/SENSITIZATION/ALLERGIES.

First Aid:EYES: IMMEDIATELY FLUSH W/COPIOUS AMOUNTS OF WATER FOR 15
MINS. DIPHENYLMETHANE DIISOCYANATE MAY REACT W/THE MOISTURE OF THE
EYE FORMING A THICK MATERIAL WHICH MAY BE DIFFICULT TO WASH. SKIN:
CLEAN TH OROUGHLY BY WASHING W/MILD SOAP & WATER. INHALATION:
REMOVE TO FRESH AIR. GIVE OXYGEN/CPR IF NEEDED, OXYGEN SHOULD BE
ADMINISTERED BY QUALIFIED PERSONNEL. OBTAIN MEDICAL ATTENTION IN
ALL CASES.

Flash Point:>400F
Extinguishing Media:CO2, DRY CHEMICAL, FOAM. USE WATER IN VERY LARGE
QUANTITIES. REACTION OF WATER & HOT ISOCYANATE MY NE VIGOROUS.
Fire Fighting Procedures:EVACUATE AREA. USE A POSITIVE PRESSURE NIOSH
APPROVED SCBA PROPER PROTECTIVE EQUIPMENT.
Unusual Fire/Explosion Hazard:DON'T RESEAL CONTAMINATED CONTAINERS AS
PRESSURE BUILD UP MAY RUPTURE THEM. THE COMBINED EFFECT OF CO2 &
HEAT CAN PRODUCE ENOUGH PRESSURE TO RUPTURE CONTAINER.

Spill Release Procedures:EVACUATE & VENTILATE AREA. DIKE TO PREVENT
ENTRY INTO THE WATER SYSTEM/WEAR FULL PROTECTIVE EQUIPMENT
INCLUDING RESPIRATORY EQUIPMENT. MAJOR: IF TEMPORARY CONTROL OF
VAPOR IS REQUIRED A BLANKET OF PRO TEIN FOAM MAY BE PLACED. (SEE
SUPP)
Neutralizing Agent:MIXTURE OF WATER & 3-8% CONCENTRATED AMMONIUM
HYDROXIDE/5-10% SODIUM CARBONATE.

Handling and Storage Precautions:STORE IN TIGHTLY CLOSED CONTAINERS TO
PROTECT FROM ATMOSPHERIC MOISTURE. STORE AT ROOM TEMP OF 50-95 F,
PROTECT FROM FREEZING.
Other Precautions:CONTAINERS CAN CONTAIN HAZARDOUS PRODUCT RESIDUES
EVEN WHEN EMPTY. AVOID WATER AS IT REACTS TO FORM HEAT, CO2 &
INSOLUBLE UREA. THE REACTION W/WATER IS SLOW AT TEMP <120F, BUT
ACCELERATED AT HIGHER TE MPS & IN THE PRESENCE INCOMPATIBLES.

Respiratory Protection:IF EXPOSURE EXCEEDS THE PEL/TLV, USE THE
APPROPRIATE NIOSH APPROVED AIR-PURIFYING/POSITIVE PRESSURE
SUPPLIED-AIR RESPIRATOR.
Ventilation:AT LEAST 10 AIR CHANGES PER HOUR ARE RECOMMENDED FOR GOOD
GENERAL ROOM VENTILATION.
Protective Gloves:REQUIRED
Eye Protection:SAFETY GLASSES, GOGGLES, SPLASH SHIELD
Other Protective Equipment:PROTECTIVE CLOTHING, EYE WASH FOUNTAINS &
SAFETY SHOWERS
Work Hygienic Practices:REMOVE/LAUNDER CONTAMINATED CLOTHING BEFORE
REUSE. WASH AFTER HANDLING. DON'T WEAR CONTACT LENSES.
Supplemental Safety and Health
SPILL CONT'D: LARGE-PUMP INTO CLOSED NOT SEALED CONTAINERS FOR
DISPOSAL. MINOR: ABSORB W/SAWDUST/OTHER ABSORBANT & SHOVEL INTO
OPEN TOP CONTAINERS. DON'T MAKE PRESSURE TIGHT. TRANSPORT TO A WELL
VENTI LATED AREA & TREAT W/NEUTRALIZER. ADD 10 PARTS PER PART
WHLIE MIXING. ALLOW TO STAND FOR 48 HRS ALLOWING CO2 TO ESCAPE.

Boiling Pt:B.P. Text:392F
Vapor Density: 8.6
Evaporation Rate & Reference:(ETHER=1): <1

Stability Indicator/Materials to Avoid:YES
OXIDIZING MATERIALS/STRONG ACIDS/STRONG ALKALIES/ALCOHOLS/AMINES/METAL
COMPOUNDS/SURFACE ACTIVE MATERIALS/WATER
Stability Condition to Avoid:HEAT & FREEZING
Hazardous Decomposition Products:OXIDES-COMPOUNDS OF NITROGEN/TOLUENE
DIISOCYANATE/TRACES OF HYDROGEN CYANIDE/CO2/CO/INCOMPLETE
COMBUSTION PRODUCTS/UREA

Waste Disposal Methods:DISPOSE IAW/FEDERAL, STATE & LOCAL REGULATIONS.

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assume responsibility for the suitability of this information to their
particular situation.