1-METHYLNAPHTHALENE
| Chemical Identification | |
|---|---|
| CAS # | 90-12-0 |
| Formula |
C₁₁H₁₀ |
| Synonyms |
α-methylnaphthalene |
| Physical Properties | |||
|---|---|---|---|
| Physical description | Colorless liquid. | ||
| Boiling point | 464-469°F | Molecular weight | 142.2 |
| Freezing point/melting point | -8°F | Vapor pressure | |
| Flash point | 180°F | Vapor density | 4.91 |
| Specific gravity | 1.0202 | 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 | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | M155 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | ||||||
| Sampling time* | ||||||
| Sampling volume (TWA)* | ||||||
| Sampling flow rate (TWA)* | ||||||
| Sampling volume (STEL/Peak/C)* | ||||||
| Sampling flow rate (STEL/Peak/C)* | ||||||
| Analytical method instruments | ||||||
| Method reference | ||||||
| Notes | OSHA staff only, please contact SLTC at 801-233-4900 |
|||||
| 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 | |
|---|---|
| Sampler/Sampling media | |
| Bulk Method |
|---|
| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | ||||||
| Model/Type | ||||||
|
Sampling information (see manufacturer instructions) |
||||||
| 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 |
|||||
| PEL-TWA | REL-TWA | TLV-TWA |
0.5 ppm [2006] |
PEL-TWA | |||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
NA |
Skin notation |
Y |
Skin notation |
NA |
|
Notes:
Not established |
Notes:
Not established |
Notes: |
Notes:
Not established |
||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: TLV-A4 |
Notes:
|
||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
|||||||
| Additional Resources and Literature References |
|---|
|
NOAA: CAMEO Chemicals - 1-Methylnaphthalene NIOSH: Pocket Guide to Chemical Hazards - 1-Methylnaphthalene Literature References
|
Last Updated Date : 12/15/2020