NIOSH Pocket Guide to Chemical Hazards


CAS 1918-02-1


RTECS TJ7525000
Synonyms & Trade Names
4-Amino-3,5,6-trichloropicolinic acid; 4-Amino-3,5,6-trichloro-2-picolinic acid; ATCP; Tordon®
DOT ID & Guide


NIOSH REL: See Appendix D
OSHA PEL†: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH N.D. See: IDLH INDEX Conversion
Physical Description
Colorless to white crystals with a chlorine-like odor. [herbicide]
MW: 241.5
BP: Decomposes
MLT: 424°F (Decomposes)
Sol: 0.04%
VP(95°F): 0.0000006 mmHg
IP: ?

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

Combustible Solid
Incompatibilities & Reactivities
Hot concentrated alkali (hydrolyzes)
Measurement Methods
NIOSH 0500, 0600
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: No recommendation
Change: Daily

First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Fresh air
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; nausea; in animals: liver, kidney changes
Target Organs Eyes, skin, respiratory system, liver, kidneys
See also: INTRODUCTION   See ICSC CARD: 1246