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TEDP

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Synonyms & Trade Names
Bladafum®, Dithion®, Sulfotep, Tetraethyl dithionopyrophosphate, Tetraethyl dithiopyrophosphate, Thiotepp®
CAS No.
3689-24-5
RTECS No.
XN4375000
DOT ID & Guide
1704 153
Formula
[(CH₃CH₂O)₂PS]₂O
Conversion
1 ppm = 13.18 mg/m3
IDLH
10 mg/m3
See: 3689245
Exposure Limits
NIOSH REL
TWA 0.2 mg/m3 [skin]
OSHA PEL
TWA 0.2 mg/m3 [skin]
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Pale-yellow liquid with a garlic-like odor. [Note: A pesticide that may be absorbed on a solid carrier or mixed in a more flammable liquid.]
Molecular Weight
322.3
Boiling Point
Decomposes
Freezing Point
?
Solubility
0.0007%
Vapor Pressure
0.0002 mmHg
Ionization Potential
?
Specific Gravity
(77°F): 1.20
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Liquid
Incompatibilities & Reactivities
Strong oxidizers, iron [Note: Corrosive to iron.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; eye pain, blurred vision, lacrimation (discharge of tears); rhinorrhea (discharge of thin nasal mucus); headache; cyanosis; anorexia, nausea, vomiting, diarrhea; localized sweating, lassitude (weakness, exhaustion), twitching, paralysis, Cheyne-Stokes respiration, convulsions, low blood pressure, cardiac irreg
Target Organs
Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase
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
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 2 mg/m3:
(APF = 10) Any supplied-air respirator

Up to 5 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode

Up to 10 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

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 an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0985   MEDICAL TESTS: 0219
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health