Methylene chloride
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CAS
75-09-2
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CH2Cl2
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RTECS
PA8050000
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Synonyms & Trade Names
Dichloromethane, Methylene dichloride
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DOT ID & Guide
1593 160
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Exposure
Limits
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NIOSH REL: Ca See Appendix A
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OSHA PEL: [1910.1052] TWA 25 ppm ST 125 ppm
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IDLH
Ca [2300 ppm]
See: 75092
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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
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BP: 104°F
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FRZ: -139°F
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Sol: 2%
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VP: 350 mmHg
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IP: 11.32 eV
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Sp.Gr: 1.33
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Fl.P: ?
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UEL: 23%
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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
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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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/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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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
See ICSC CARD: 0058 See MEDICAL TESTS: 0148
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