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| Triorthocresyl phosphate | CAS 78-30-8 | ||
| (CH3C6H40)3PO | RTECS TD0350000 | ||
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Synonyms & Trade Names TCP, TOCP, Tri-o-cresyl ester of phosphoric acid, Tri-o-cresyl phosphate |
DOT ID & Guide 2574 151 |
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Exposure Limits |
NIOSH REL: TWA 0.1 mg/m3 [skin] | ||
| OSHA PEL†: TWA 0.1 mg/m3 | |||
| IDLH 40 mg/m3 See: 78308 | Conversion | ||
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Physical Description Colorless to pale-yellow, odorless liquid or solid (below 52°F). |
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MW: 368.4 |
BP: 770°F (Decomposes) |
FRZ: 52°F |
Sol: Slight |
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VP(77°F): 0.00002 mmHg |
IP: ? |
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Sp.Gr: 1.20 |
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Fl.P: 437°F |
UEL: ? |
LEL: ? |
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| Class IIIB Combustible Liquid: Fl.P. at or above 200°F. | |||
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Incompatibilities & Reactivities Oxidizers |
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Measurement Methods NIOSH 5037 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: No recommendation Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations NIOSH/OSHA Up to 0.5 mg/m3: (APF = 5) Any dust and mist respirator Up to 1 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators/(APF = 10) Any supplied-air respirator Up to 2.5 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter Up to 5 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 40 mg/m3: (APF = 1000) Any supplied-air respirator 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 with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Gastrointestinal disturbance; peripheral neuropathy; cramps in calves, paresthesia in feet or hands; weak feet, wrist drop, paralysis | |
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Target Organs
peripheral nervous system, central nervous system |
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| See also: INTRODUCTION See ICSC CARD: 0961 |