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NAPHTHALENE†
| CAS # | 91-20-3 |
|---|---|
| Formula |
C₁₀H₈ |
| Synonyms |
diesel exhaust component; white tar; naphthalin; tar camphor |
| Physical description | A white crystalline volatile solid with a strong coal-tar odor. | ||
|---|---|---|---|
| Boiling point | 424°F | Molecular weight | 128.2 |
| Freezing point/melting point | 176°F | Vapor pressure | 0.08 mmHg |
| Flash point | 174°F | Vapor density | 4.42 |
| Specific gravity | 1.15 | Ionization potential | 8.12 eV |
| Lower explosive limit (LEL) | 0.9% | Upper explosive limit (UEL) | 5.9% |
| NFPA health rating | 2 | NFPA fire rating | 2 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1810 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | Chromosorb® 106 (100/50 mg) [SKC 226-110] |
| Sampling time* |
50 min |
| Sampling volume (TWA)* |
10 L |
| Sampling flow rate (TWA)* |
0.2 L/min |
| Sampling volume (STEL/Peak/C)* |
|
| Sampling flow rate (STEL/Peak/C)* |
|
| Analytical method instruments | GC-FID |
| Method reference | OSHA 35 (fully validated) |
| Notes |
Submit as a separate sample. |
| 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 |
10 ppm (50 mg/m³) |
REL-TWA |
10 ppm (50 mg/m³) |
TLV-TWA |
10 ppm (52 mg/m³) [2013] |
PEL-TWA |
0.1 ppm (0.5 mg/m³) |
| PEL-STEL |
|
REL-STEL |
15 ppm (75 mg/m³) |
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
N |
Skin notation |
N |
Skin notation |
Y |
Skin notation |
Y |
| Notes: |
Notes:
|
Notes:
|
Notes:
|
||||
| Health factors: See NIH-NLM PubChem. | IDLH |
250 ppm |
|||||
| Carcinogenic classifications: TLV-A4, EPA-CBD;C, IARC-2B, NTP-R |
Notes:
|
||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Naphthalene NIOSH: Pocket Guide to Chemical Hazards - Naphthalene Literature References
|
Last Updated Date : 01/05/2021