4,4'-Methylenedianiline |
Synonyms & Trade Names 4,4'-Diaminodiphenylmethane; para, para'-Diaminodiphenyl-methane; Dianilinomethane; 4,4'-Diphenylmethanediamine; MDA |
CAS No. 101-77-9 |
RTECS No. BY5425000 |
DOT ID & Guide |
FormulaCH2(C6H4NH2)2 |
Conversion |
IDLH Ca [N.D.]
See: IDLH INDEX |
Exposure Limits NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1050] TWA 0.010 ppm ST 0.100 ppm |
Measurement Methods
NIOSH 5029
See: NMAM or OSHA Methods |
Physical Description Pale-brown, crystalline solid with a faint, amine-like odor. |
MW: 198.3 |
BP: 748°F |
MLT: 198°F |
Sol: 0.1% |
VP(77°F): 0.0000002 mmHg |
IP: 10.70 eV |
Sp.Gr: 1.06 (Liquid at 212°F) |
Fl.P: 374°F |
UEL: ? |
LEL: ? |
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| Combustible Solid |
Incompatibilities & Reactivities Strong oxidizers |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes; jaundice, hepatitis; myocardial damage; in animals: heart, liver, spleen damage; [potential occupational carcinogen] |
Target Organs Eyes, liver, cardiovascular system, spleen |
Cancer Site[in animals: bladder cancer] |
Personal Protection/Sanitation (See protection codes)
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 wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations (See Appendix E)
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 an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 1111 See MEDICAL TESTS: 0250 |
