PHTHALIC ACID
| Chemical Identification | |
|---|---|
| CAS # | 88-99-3 |
| Formula |
C₈H₆O₄ |
| Synonyms |
benzene-1,2-dicarboxylic acid; 1,2-benzenecarboxylic acid; o-phthalic acid; o-dicarboxybenzene |
| Physical Properties | |||
|---|---|---|---|
| Physical description | White crystals or a fine white powder. | ||
| Boiling point | decomposes | Molecular weight | 166.13 |
| Freezing point/melting point | 410-412°F | Vapor pressure | |
| Flash point | 334°F | Vapor density | |
| Specific gravity | 1.593 | 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.) | P198 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | GFFs coated with veratrylamine (3,4-dimethoxybenzylamine) and di-n-octyl phthalate [SLTC100] | |||||
| Sampling time* |
75 min |
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| Sampling volume (TWA)* |
75 L |
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| Sampling flow rate (TWA)* |
1 L/min |
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| Sampling volume (STEL/Peak/C)* |
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| Sampling flow rate (STEL/Peak/C)* |
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| Analytical method instruments | HPLC | |||||
| Method reference | OSHA 90 (fully validated) | |||||
| Notes |
Store filters under refrigeration and use within 1 month. Small interfering peaks start appearing after that time. |
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| Special requirements |
These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling. |
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* 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 |
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| Bulk Method |
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| On-Site Screening Techniques | ||||||
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| Device | ||||||
| Model/Type | ||||||
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Sampling information (see manufacturer instructions) |
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| 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 |
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| PEL-TWA |
|
REL-TWA |
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TLV-TWA |
|
PEL-TWA |
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| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
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| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
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| Skin notation |
NA |
Skin notation |
NA |
Skin notation |
NA |
Skin notation |
NA |
|
Notes:
Not established |
Notes:
Not established |
Notes:
Not established |
Notes:
Not established |
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| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: |
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 - Phthalic acid NIOSH: Pocket Guide to Chemical Hazards - Phthalic acid Literature References
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Last Updated Date : 01/08/2021