NIOSH Pocket Guide to Chemical Hazards

Ronnel CAS 299-84-3
(CH3O)2P(S)OC6H2Cl3 RTECS TG0525000
Synonyms & Trade Names
O,O-Dimethyl O-(2,4,5-trichlorophenyl) phosphorothioate; Fenchlorophos
DOT ID & Guide
Exposure
Limits
NIOSH REL: TWA 10 mg/m3
OSHA PEL�: TWA 15 mg/m3
IDLH 300 mg/m3 Conversion
Physical Description
White to light-tan, crystalline solid. [insecticide] [Note: A liquid above 106°F.]
MW: 321.6
BP: Decomposes
MLT: 106°F
Sol(77°F): 0.004%
VP(77°F): 0.0008 mmHg
IP: ?

Sp.Gr(77°F): 1.49
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Solid
Incompatibilities & Reactivities
Strong oxidizers
Measurement Methods
NIOSH 5600; OSHA PV2054
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH
Up to 100 mg/m3: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s) in combination with a dust, mist, and fume filter/(APF = 10) Any supplied-air respirator
Up to 250 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s) in combination with a dust, mist, and fume filter
Up to 300 mg/m3: (APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s) in combination with a high-efficiency particulate filter/(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/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s) in combination with 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
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, ingestion, skin and/or eye contact
Symptoms In animals: irritation eyes; cholinesterase inhibition; liver, kidney damage
Target Organs Eyes, liver, kidneys, blood plasma
See also: INTRODUCTION