# NIOSH Pocket Guide to Chemical Hazards
4,4'-Methylenebis(2-chloroaniline) | CAS 101-14-4
CH2(C6H4ClNH2)2 | RTECS CY1050000
Synonyms & Trade Names DACPM; 3,3'-Dichloro-4,4'-diaminodiphenylmethane; MBOCA; 4,4'-Methylenebis(o-chloro aniline); 4,4'-Methylenebis(2-chlorobenzenamine); MOCA | DOT ID & Guide
Exposure Limits | NIOSH REL: Ca TWA 0.003 mg/m3 [skin] See Appendix A
OSHA PEL†: none
IDLH Ca [N.D.] | Conversion
Physical Description Tan-colored pellets or flakes with a faint, amine-like odor.
MW: 267.2 | BP: ? | MLT: 230°F | Sol: Slight
VP(77°F): 0.00001 mmHg | IP: ? |  | Sp.Gr: 1.44
Fl.P: ? | UEL: ? | LEL: ? |
Incompatibilities & Reactivities Chemically-active metals (e.g., potassium, sodium, magnesium, zinc)
Measurement Methods OSHA 24, 71
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Hematuria (blood in the urine), cyanosis, nausea, methemoglobinemia, kidney irritation; [potential occupational carcinogen]
Target Organs Liver, blood, kidneys Cancer Site [in animals: liver, lung & bladder tumors]
See also: INTRODUCTION