4,4'-DIAMINODICYCLOHEXYL METHANE

PHYSICAL DESCRIPTION: Yellowish white liquid or brown solid paste. (NTP, 1992)

none

Sensitive to decomposition in air and light (NTP, 1992). Insoluble in water.

This chemical is probably combustible. (NTP, 1992)

ACUTE/CHRONIC HAZARDS: This compound is corrosive. (NTP, 1992)

4,4'-DIAMINODICYCLOHEXYL METHANE neutralizes acids in weakly exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides.

• Amines, Phosphines, and Pyridines

Use caution: Liquids with this reactive group classification have been known to react with the absorbent listed below.

• Mineral-Based & Clay-Based Absorbents

Excerpt from 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)

SMALL SPILLS AND LEAKAGE: If you spill this chemical, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with alcohol followed by washing with a strong soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

STORAGE PRECAUTIONS: You should keep this material in a tightly-closed container under an inert atmosphere, and store it at refrigerated temperatures. (NTP, 1992)

MINIMUM PROTECTIVE CLOTHING: If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. Splash proof safety goggles should be worn while handling this chemical. Alternatively, a full face respirator, equipped as above, may be used to provide simultaneous eye and respiratory protection. (NTP, 1992)

Normalized Breakthrough Times (in Minutes)

Chemical	CAS Number	State	QS	QC	SL	C3	TF	TP	RC	TK	RF
Methylen Isocyclohexylamine, 4,4- (40°C)	1761-71-3	Liquid					>480
Methylen Isocyclohexylamine, 4,4- (50°C, molten)	1761-71-3	Liquid			>480

Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be used around heat, flames, sparks or in potentially flammable or explosive environments. Only...

(DuPont, 2023)

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.

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. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. Corrosive chemicals will destroy the membranes of the mouth, throat, and esophagus and, in addition, have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. 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. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. Transport the victim IMMEDIATELY to a hospital. (NTP, 1992)

• AMICURE PACM
• BIS(4-AMINOCYCLOHEXYL)METHANE
• BIS(P-AMINOCYCLOHEXYL)METHANE
• CYCLOHEXYLAMINE, 4,4'-METHYLENEBIS-
• CYCLOHEXYLAMINE, 4,4-METHYLENEBIS-
• DI(P-AMINOCYCLOHEXYL)METHANE
• 4,4'-DIAMINODICYCLOHEXYL METHANE
• 4,4'-DIAMINODICYCLOHEXYLMETHANE
• DICYCLOHEXYLMETHANE-4,4'-DIAMINE
• HLR 4219
• HLR 4448
• METHYLENEBIS(4-AMINOCYCLOHEXANE)
• METHYLENEBIS(4-CYCLOHEXYLAMINE)
• 4,4'-METHYLENEBIS(AMINOCYCLOHEXANE)
• 4,4'-METHYLENEBIS(CYCLOHEXYLAMINE)
• 4,4'-METHYLENEBIS[CYCLOHEXANAMINE]
• 4,4'-METHYLENEDICYCLOHEXANAMINE
• 4,4'-METHYLENEDICYCLOHEXYLAMINE
• P,P'-DIAMINODICYCLOHEXYLMETHANE
• PACM
• PACM 20
• WONDAMINE HM