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CATECHOL
| CAS # | 120-80-9 |
|---|---|
| Formula |
C₆H₆O₂ |
| Synonyms |
1,2-benzenediol; o-benzenediol; 1,2-dihydroxybenzene; o-dihydroxybenzene; 2-hydroxyphenol; pyrocatechol |
| Physical description | Colorless, crystalline solid with a faint odor. | ||
|---|---|---|---|
| Boiling point | 474°F | Molecular weight | 110.1 |
| Freezing point/melting point | 221°F | Vapor pressure | 10 mmHg at 245°F |
| Flash point | 261°F | Vapor density | 3.79 |
| Specific gravity | 1.34 | Ionization potential | |
| Lower explosive limit (LEL) | 1.4% | Upper explosive limit (UEL) | NA |
| NFPA health rating | 3 | NFPA fire rating | 1 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0571 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | OSHA versatile sampler (OVS-7) - 13 mm XAD-7 tube (270/140 mg) with GFF enclosed (no longer available) [SKC 226-57] |
| Sampling time* | |
| Sampling volume (TWA)* | 100 L |
| Sampling flow rate (TWA)* | 1 L/min |
| Sampling volume (STEL/Peak/C)* | |
| Sampling flow rate (STEL/Peak/C)* | |
| Analytical method instruments | GC-FID |
| Method reference | OSHA PV2014 (partially validated) |
| Notes | SKC recommends the 200/100 mg variant with the same media [SKC 226-57] |
| 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 | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
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 |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA | REL-TWA |
5 ppm (20 mg/m³) |
TLV-TWA |
5 ppm [1985] |
PEL-TWA |
5 ppm (20 mg/m³) |
|
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-2B, TLV-A3 | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Catechol NIOSH: Pocket Guide to Chemical Hazards - Catechol Literature References
|
Last Updated Date : 12/21/2020