Hexamethyl phosphoramide
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CAS
680-31-9
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[(CH3)2N]3PO
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RTECS
TD0875000
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Synonyms & Trade Names
Hexamethylphosphoric triamide, Hexamethylphosphorotriamide, HMPA, Tris(dimethylamino)phosphine oxide
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: Ca See Appendix A
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OSHA PEL: none
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IDLH
Ca [N.D.]
See: IDLH INDEX
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Conversion
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Physical Description
Clear, colorless liquid with an aromatic or mild, amine-like odor. [Note: A solid below 43°F.]
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MW: 179.2
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BP: 451°F
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FRZ: 43°F
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Sol: Miscible
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VP: 0.03 mmHg
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IP: ?
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Sp.Gr: 1.03
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Fl.P: 220°F
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UEL: ?
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LEL: ?
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Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
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Incompatibilities & Reactivities
Oxidizers, strong acids, chemically-active metals (e.g., potassium, sodium, magnesium, zinc)
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Measurement Methods
None available
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
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: Water flush immediately
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
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, respiratory system; dyspnea (breathing difficulty); abdominal pain; [potential occupational carcinogen]
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Target Organs
Eyes, skin, respiratory system, central nervous system, gastrointestinal tract
Cancer Site
[in animals: cancer of the nasal cavity]
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See also: INTRODUCTION
See ICSC CARD: 0162 |
