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Phosphorus trichloride |
CAS 7719-12-2 | ||
PCl3 |
RTECS TH3675000 | ||
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Synonyms & Trade Names Phosphorus chloride |
DOT ID & Guide 1809 137 |
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Exposure
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NIOSH REL: TWA 0.2 ppm (1.5 mg/m3) ST 0.5 ppm (3 mg/m3) | ||
| OSHA PEL†: TWA 0.5 ppm (3 mg/m3) | |||
| IDLH 25 ppm See: 7719122 | Conversion 1 ppm = 5.62 mg/m3 | ||
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Physical Description Colorless to yellow, fuming liquid with an odor like hydrochloric acid. |
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MW: 137.4 |
BP: 169°F |
FRZ: -170°F |
Sol: Reacts |
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VP: 100 mmHg |
IP: 9.91 eV |
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Sp.Gr: 1.58 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Liquid; however, a strong oxidizer that may ignite combustibles upon contact. | |||
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Incompatibilities & Reactivities Water, chemically-active metals such as sodium & potassium, aluminum, strong nitric acid, acetic acid, organic matter [Note: Hydrolyzes in water to form hydrochloric acid and phosphoric acid.] |
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Measurement Methods NIOSH 6402 See: NMAM or OSHA Methods |
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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 |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations NIOSH Up to 10 ppm: (APF = 50) Any self-contained breathing apparatus with a full facepiece (APF = 50) Any supplied-air respirator with a full facepiece Up to 25 ppm: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode Emergency or planned entry into unknown concentrations or IDLH conditions: (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 canister providing protection against the compound of concern¿/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose, throat; pulmonary edema; eye, skin burns | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION See ICSC CARD: 0696 See MEDICAL TESTS: 0191 |