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O-DIANISIDINE
| CAS # | 119-90-4 |
|---|---|
| Formula |
C₁₄H₁₆N₂O₂ |
| Synonyms |
dianisidine; 3,3'-dianisidine; 3,3'-dimethoxybenzidine |
| Physical description | Colorless crystals that turn a violet color on standing. | ||
|---|---|---|---|
| Boiling point | Molecular weight | 244.3 | |
| Freezing point/melting point | 279°F | Vapor pressure | |
| Flash point | 403°F | Vapor density | 8.5 |
| Specific gravity | Ionization potential | ||
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 1 | NFPA fire rating | 1 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0873 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | 2 GFFs (37 mm) coated with sulfuric acid, in 3-piece cassette, separated by the ring section [SKC 225-9004] |
| Sampling time* | 100 min |
| Sampling volume (TWA)* | 100 L |
| Sampling flow rate (TWA)* | 1 L/min |
| Sampling volume (STEL/Peak/C)* | 15 L |
| Sampling flow rate (STEL/Peak/C)* | 1 L/min |
| Analytical method instruments | GC-ECD |
| Method reference | OSHA 71 (fully validated) |
| Notes | Within ten hours after sampling, transfer filter to glass vial containing 2 mL deionized water. Sample must be shipped and stored at 0°C or colder. Analyze as soon as possible. |
| 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 | TLV-TWA | PEL-TWA |
|
|||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL |
|
|||
| PEL-C | REL-C | TLV-C |
|
PEL-C |
|
||
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
NA |
Skin notation |
NA |
|
Notes:
Not established |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. See also, Appendix C, Supplementary Exposure Limits. |
Notes:
Not established |
Notes:
Not established |
||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R |
Notes:
Ca |
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - 3,3'-Dimethoxybenzidine NIOSH: Pocket Guide to Chemical Hazards - o-Dianisidine Literature References
|
Last Updated Date : 01/07/2021