# NIOSH Pocket Guide to Chemical Hazards
Crufomate | CAS 299-86-5
C12H19ClNO3P | RTECS TB3850000
Synonyms & Trade Names 4-t-Butyl-2-chlorophenylmethyl methylphosphoramidate, Dowco® 132, Ruelene® | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 5 mg/m3 ST 20 mg/m3
OSHA PEL†: none
IDLH N.D. | 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
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 immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
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