NIOSH Pocket Guide to Chemical Hazards


CAS 299-86-5


RTECS TB3850000
Synonyms & Trade Names
4-t-Butyl-2-chlorophenylmethyl methylphosphoramidate; Dowco® 132; Ruelene®
DOT ID & Guide


NIOSH REL: TWA 5 mg/m3 ST 20 mg/m3
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX Conversion
Physical Description
White, crystalline solid in pure form. [pesticide] [Note: Commercial product is a yellow oil.]
MW: 291.7
BP: Decomposes
MLT: 140°F
Sol: Insoluble
VP(243°F): 0.01 mmHg
IP: ?

Sp.Gr: 1.16
Fl.P: ?
UEL: ?
LEL: ?

Combustible Solid
Incompatibilities & Reactivities
Strongly alkaline & strongly acidic media [Note: Unstable over long periods in aqueous preparations or above 140°F.]
Measurement Methods
NIOSH 0500; OSHA PV2015
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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 immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; wheezing, dyspnea (breathing difficulty); blurred vision, lacrimation (discharge of tears); sweating; abdominal cramps, diarrhea, nausea, anorexia
Target Organs Eyes, skin, respiratory system, blood cholinesterase
See also: INTRODUCTION   See ICSC CARD: 1143