PICLORAM†

Chemical Identification
Chemical Identification
CAS # 1918-02-1
Formula
 

C₆H₃Cl₃N₂O₂

Synonyms
 

4-amino-3,5,6-trichloropicolinic acid; 4-amino-3,5,6-trichloro-2-picolinic acid; ATCP; Tordon

Physical Properties
Physical Properties
Physical description Fine beige crystals or white powder with a chlorine-like odor.
Boiling point decomposes Molecular weight 241.46
Freezing point/melting point 392°F (decomposes) Vapor pressure 0.0000006 mmHg at 95°F
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2017 (total dust) P158 (respirable fraction)
Sampling group
Sampler/Sampling media GFF (37 mm), Type A/E [AP4003705] GFF (37 mm), Type A/E, preceded by 10 mm nylon cyclone [AP4003705]
Sampling time*
 

 

 
 

 

Sampling volume (TWA)*
 

480 L

 
 

816 L

Sampling flow rate (TWA)*
 

1 L/min

 
 

1.7 L/min

Sampling volume (STEL/Peak/C)*
 
 

 

 
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

 
 

 

Analytical method instruments HPLC-UV HPLC-UV
Method reference OSHA PV2049 (partially validated) OSHA PV2049 (partially validated)
Notes
 
 

 

 
 

 

Special requirements
 
 

 

 
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
 
 

 

Bulk Method
Bulk Method
 
 

Limit the amount of bulk submitted to 1 g or 1 mL.

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 
 

15 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

REL-TWA
 
 

 

TLV-TWA
 
 

10 mg/m³ [1992]

PEL-TWA
 
 

10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)

PEL-STEL
 
 

 

REL-STEL
 
 

 

TLV-STEL
 
 

 

PEL-STEL
 
 

 

PEL-C
 
 

 

REL-C
 
 

 

TLV-C
 
 

 

PEL-C
 
 

 

Skin notation
 
 

N

Skin notation
 
 

N

Skin notation
 
 

N

Skin notation
 
 

N

Notes:
 
 

See 29 CFR 1910.1000 Table Z-1.

Notes:
 
 

See Appendix D - Substances with No Established RELs.

Notes:
 
 

 

Notes:
 
 

See footnote [n].

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4, IARC-3 Notes:
 
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 
 

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Picloram

NIOSH: Pocket Guide to Chemical Hazards - Picloram

Literature References

 
 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Picloram. See annual publication for most recent information.

Last Updated Date : 01/08/2021