NIOSH Pocket Guide to Chemical Hazards

TEPP CAS 107-49-3
[(CH3CH2O)2PO]2O RTECS UX6825000
Synonyms & Trade Names
Ethyl pyrophosphate, Tetraethyl pyrophosphate, Tetron®
DOT ID & Guide
2783 152
3018 152 (liquid)
Exposure
Limits
NIOSH REL: TWA 0.05 mg/m3 [skin]
OSHA PEL: TWA 0.05 mg/m3 [skin]
IDLH 5 mg/m3 Conversion 1 ppm = 11.87 mg/m3
Physical Description
Colorless to amber liquid with a faint, fruity odor. [insecticide] [Note: A solid below 32°F.]
MW: 290.2
BP: Decomposes
FRZ: 32°F
Sol: Miscible
VP: 0.0002 mmHg
IP: ?

Sp.Gr: 1.19
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Liquid
Incompatibilities & Reactivities
Strong oxidizers, alkalis, water [Note: Hydrolyzes quickly in water to form pyrophosphoric acid.]
Measurement Methods
NIOSH 2504
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: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA
Up to 0.5 mg/m3: (APF = 10) Any supplied-air respirator
Up to 1.25 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 2.5 mg/m3: (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece
Up to 5 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 (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Eye pain, blurred vision, lacrimation (discharge of tears); rhinorrhea (discharge of thin mucus); headache, chest tightness, cyanosis; anorexia, nausea, vomiting, diarrhea; lassitude (weakness, exhaustion), twitching, paralysis, Cheyne-Stokes respiration, convulsions; low blood pressure, cardiac irregularities; sweating
Target Organs Eyes, respiratory system, central nervous system, cardiovascular system, gastrointestinal tract, blood cholinesterase
See also: INTRODUCTION