Product ID:D-233 DESMODUR W
MSDS Date:06/26/1991
FSC:8010
NIIN:00F000013
MSDS Number: BBFRF

Emergency Phone: 412-777-2194

Info Phone: 800-662-2927

Preparer: B J GAMBINO

Cage: EO419

Telephone: 800-662-2927

Cage: EO419

METHYLENE BIS(4-CYCLOHEXYLISOCYANATE)

CAS: 5124-30-1

RTECS: NQ9250000

Fraction By Weight: 100%

OSHA PEL 0.01 PPM

ACGIH TLV: 0.054 MG/CUM

LD50 LC50 Mixture:ORAL LD50 (RAT): >11,000 MG/KG
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:INHALATION: RESPIRATORY TRACT MUCOUS
MEMBRANES IRRITATION. BRONCHITIS/BRONCHIAL SPASM/PULMONARY EDEMA.
CHEMICAL/HYPERSENSITIVE PNEUMONITIS W/FLU EFFECTS. SKIN:
IRRITATION/SENSITIZATION. EYES: IRRITAT
ION/TEARING/REDNESS/SWELLING/STINGING SENSATION. INGESTION:
IRRITATION/CORROSIVE TO MOUTH/STOMACH TISSUE/DIGESTIVE TRACT
Explanation of Carcinogenicity:NONE
Effects of Overexposure:INHALATION: ISOCYANATE SENSITIZATION. LUNG
DAMAGE, INCLUDING DECREASE IN LUNG FUNCTION. SKIN: REDDENING,
SWELLING, RASH , SCALING OR BLISTERING.
Medical Cond Aggravated by Exposure:SKIN ALLERGIES, ASTHMA & ANY OTHER
RESPIRATORY DISORDERS, ECZEMA.

First Aid:EYES: FLUSH W/LUKEWARM WATER FOR 15 MINS. SKIN: WASH W/SOAP &
WATER. FOR SEVERE EXPOSURES, GET UNDER SAFETY SHOWER AFTER REMOVING
CLOTHING. INHALATION: REMOVE TO FRESH AIR. GIVE OXYGEN/ARTIFICIAL
RESP IRATION. TREATMENT IS SYMPTOMATIC. INGESTION: DON'T INDUCE
VOMITING. GIVE 1-2 CUPS OF MILK/WATER TO DRINK. DON'T GIVE ANYTHING
BY MOUTH TO AN UNCONSCIOUS/CONVULSING PERSON. OBTAIN MED ATTN. SEE
SUPP.

Flash Point Method:TCC
Flash Point:>395F/202C
Extinguishing Media:DRY CHEMICAL, COW, FOAM, WATER SPRAY FOR LARGE
FIRES.
Fire Fighting Procedures:FULL EMERGENCY EQUIPMENT W/SCBA & FULL
PROTECTIVE CLOTHING.
Unusual Fire/Explosion Hazard:CLOSED CONTAINER MAY EXPLODE WHEN EXPOSED
TO EXTREME HEAT OR BURST WHEN CONTAMINATED W/WATER (CO2 EVOLVED).

Spill Release Procedures:EVACUATE/VENTILATE AREA. DIKE/IMPOUND/CONTROL
FURTHER SPILL. COVER W/ABSORBENT MATERIAL. POUR DECONTAMINATION
SOLUTION OVER SPILL & ALLOW TO REACT FOR 10 MINS. COLLECT IN
CONTAINERS & ADD MORE SOLUTIO N. REMOVE/COVER LOOSELY/ALLOW TO
STAND 24-48 HRS.

Handling and Storage Precautions:STORE IN TIGHTLY CLOSED CONTAINERS TO
PREVENT MOISTURE CONTAMINATION. DON'T RESEAL CONTAINER IF
CONTAMINATION IS SUSPECTED. STORE AT 68-81F.
Other Precautions:AVOID CONTACT W/SKIN, EYES & BREATHING OF VAPORS.
DON'T WEAR CONTACT LENSES. SHELF LIFE: 12 MONTHS. PRODUCT REACTS
SLOWLY W/WATER TO FORM CO2. THIS GAS CAN CAUSE SEALED CONTAINERS TO
EXPAND & POSSIBLY RUPTURE EXPLOSIVELY.

Respiratory Protection:USE A POSITIVE PRESSURE SUPPLIED AIR RESPIRATOR
IF THE AIRBORNE ISOCYANATE CONCENTRATIONS ARE NOT KNOWN OR EXCEED
0.005 PPM, OR IF OPERATIONS ARE PERFORMED IN A CONFINED SPACE OR
AREA W/LIMITED VENTIL ATION; OR WHERE MATERIAL IS HEATED.
Ventilation:SUFFICIENT LOCAL EXHAUST TO KEEP BELOW TLV
Protective Gloves:CHEMICAL RESISTANT
Eye Protection:SAFETY GLASSES/SPLASH GOGGLES/FACESHIELD
Other Protective Equipment:FULL ACID SUIT, OVERSHOES, FULL PERMEATION
RESISTANT PROTECTIVE SUIT. SAFETY SHOWERS, EYEWASH STATIONS
Work Hygienic Practices:REMOVE/LAUNDER CONTAMINATED CLOTHING BEFORE
REUSE. EDUCATE & TRAIN EMPLOYEES IN SAFE USE & FOLLOW LABEL
INSTRUCTIONS.
Supplemental Safety and Health
NOTE TO PHYSICIAN: EYES: STAIN FOR EVIDENCE OF CORNEAL INJURY, IF
BURNED, INSTILL ANTIBIOTIC/STEROID PREPARATION FREQUENTLY. SKIN:
TREAT SYMPTOMATICALLY. INGESTION: TREAT SYMPTOMATICALLY. NO
SPECIFIC ANTIDOTE. INHALATION: REMOVE TO FRESH AIR, IF A PERSON IS
HAVING A DERMAL OR PULMONARY SENSITIZATION REACTION.

Boiling Pt:B.P. Text:DECOMPOSES
Vapor Pres:0.001
Spec Gravity:1.07
Solubility in Water:INSOLUBLE
Appearance and Odor:CLEAR, ODORLESS LIQUID
Percent Volatiles by Volume:NEGL.

Stability Indicator/Materials to Avoid:YES
WATER, AMINES, STRONG BASES, ALCOHOLS, METALS COMPOUNDS & SURFACE
ACTIVE MATERIALS.
Stability Condition to Avoid:EXTREME HEAT, MOISTURE
Hazardous Decomposition Products:CO2, CO, OXIDES OF NITROGEN, TRACES OF
NITROGEN CYANIDE
Conditions to Avoid Polymerization:MOISTURE OR OTHER MATERIALS WHICH
REACT W/ISOCYANATES

Waste Disposal Methods:DISPOSE OF IN ACCORDANCE W/LOCAL, STATE, &
FEDERAL REGULATIONS. HANDLE EMPTY CONTAINERS W/CARE DUE TO PRODUCT
RESIDUE. DECONTAMINATE CONTAINERS PRIOR TO DISPOSAL. DON'T HEAT OR
CUT EMPTY CONTAINER W/E LECTRIC OR GAS TORCH. POISONOUS
LIQUID.UN2810.

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