Product Identification

Product Name

1,1-Methylene bis(4-isocyanatocyclohexane)

Synonyms

1-Isocyanato-4-[(4-isocyanatocyclohexyl)methyl]cyclohexane
4,4'-Methylenedicyclohexyl diisocyanate
bis(4-Isocyanatocyclohexyl)methane
Dicyclohexylmethane 4,4'-diisocyanate
Hydrogenated MDI
Hylene W

CAS

5124-30-1

Formula

C15H22N2O2

Molecular Weight

262.39

EINECS

225-863-2

RTECS

NQ9250000

RTECS Class

Primary Irritant

Beilstein/Gmelin

2217800

EC Index Number

615-009-00-0

EC Class

Toxic; Irritant; Sensitising

Physical and Chemical Properties

Appearance

Clear colorless to light-yellow liquid.

Solubility in water

Reacts

Melting Point

19-23

Boiling Point

358

Vapor Pressure

.001

Density

1.07 g/cm3 (20 C)

First Aid Measures

Ingestion

If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. MMEDIATELY transport the victim to a hospital.

Inhalation

IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.

Skin

IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

Eyes

First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

See inhalation.

Inhalation

Symptoms: irritation eyes, skin, respiratory system; skin, respiratory sensitization; chest tightness, dyspnea (breathing difficulty), cough, dry throat, wheezing, pulmonary edema; skin blisters Target Organs: Eyes, skin, respiratory system.

Skin

See inhalation.

Eyes

See inhalation.

UN (DOT)

2206

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Exposure limit(s)

NIOSH REL: C 0.01 ppm (0.11 mg/m3)

Fire Fighting Measures

Flash Point

>110

Fire Fighting

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

STORAGE PRECAUTIONS: You should store this material in a refrigerator.

Stability and Reactivity

Incompatibilities

Incompatible with many classes of compounds, reacting exothermically to release toxic gases Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat.

Stability

May slowly polymerize if heated above 50 C.

Transport Information

UN Number

2206

Hazard Class

6.1

Packing Group

II; III