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| Methylene chloride | CAS 75-09-2 | ||
| CH2Cl2 | RTECS PA8050000 | ||
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Synonyms & Trade Names Dichloromethane, Methylene dichloride |
DOT ID & Guide 1593 160 |
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Exposure Limits |
NIOSH REL: Ca See Appendix A | ||
| OSHA PEL: [1910.1052] TWA 25 ppm ST 125 ppm | |||
| IDLH Ca [2300 ppm] | Conversion 1 ppm = 3.47 mg/m3 | ||
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Physical Description Colorless liquid with a chloroform-like odor. [Note: A gas above 104°F.] |
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MW: 84.9 |
BP: 104°F |
FRZ: -139°F |
Sol: 2% |
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VP: 350 mmHg |
IP: 11.32 eV |
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Sp.Gr: 1.33 |
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Fl.P: ? |
UEL: 23% |
LEL: 13% |
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| Combustible Liquid | |||
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Incompatibilities & Reactivities Strong oxidizers; caustics; chemically-active metals such as aluminum, magnesium powders, potassium & sodium; concentrated nitric acid |
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Measurement Methods NIOSH 1005, 3800; OSHA 59, 80 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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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/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin; lassitude (weakness, exhaustion), drowsiness, dizziness; numbness, tingle limbs; nausea; [potential occupational carcinogen] | |
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Target Organs
Eyes, skin, cardiovascular system, central nervous system Cancer Site [in animals: lung, liver, salivary & mammary gland tumors] |
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| See also: INTRODUCTION |