2,4,5-TRICHLOROPHENOXYACETIC ACID (2,4,5-T)†
| CAS # | 93-76-5 |
|---|---|
| Formula |
C₈H₅Cl₃O₃ |
| Synonyms |
2,4,5-T |
| Physical description | Colorless to tan, odorless, crystalline solid. | ||
|---|---|---|---|
| Boiling point | decomposes | Molecular weight | 255.5 |
| Freezing point/melting point | 316°F | Vapor pressure | 1x10-7 mmHg |
| Flash point | Vapor density | ||
| Specific gravity | 1.8 | 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 | |||
| Analyte code (IMIS no.) | 2324 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | GFF (37 mm), Type A/E [AP4003705] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 15 L-200 L |
||
| Sampling flow rate (TWA)* | 1-3 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | HPLC | ||
| Method reference | NIOSH 5001 (OSHA modified) | ||
| 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 Sampler/Sampling media |
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|---|---|
| Bulk Method |
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| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
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Sampling information (see manufacturer instructions) |
|
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 |
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|---|---|---|---|---|---|---|---|
| PEL-TWA |
10 mg/m³ |
REL-TWA |
10 mg/m³ |
TLV-TWA |
10 mg/m³ [1992] |
PEL-TWA |
10 mg/m³ |
| 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: |
Notes:
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Notes:
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Notes:
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| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-2B, TLV-A4 |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References
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NOAA: CAMEO Chemicals - 2,4,5-Trichlorophenoxyacetic acid NIOSH: Pocket Guide to Chemical Hazards - 2,4,5-T Literature References
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Last Updated Date : 01/29/2021