4-METHOXYPHENOL
Chemical Identification | |
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CAS # | 150-76-5 |
Formula |
C₇H₈O₂ |
Synonyms |
hydroquinone monomethyl ether; p-hydroxyanisole; mequinol; p-methoxyphenol; monomethyl ether hydroquinone |
Physical Properties | |||
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Physical description | Colorless to white, waxy solid with an odor of caramel & phenol. | ||
Boiling point | 469°F | Molecular weight | 124.2 |
Freezing point/melting point | 126.5°F | Vapor pressure | <0.01 mmHg |
Flash point | 270°F (open cup) | Vapor density | |
Specific gravity | 1.55 | Ionization potential | 7.50 eV |
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 | ||||||
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Analyte code (IMIS no.) | M329 | |||||
Sampling group | ||||||
Sampler/Sampling media | XAD-7 tube (100/50 mg) [SKC 226-95] | |||||
Sampling time* | ||||||
Sampling volume (TWA)* | 20 L |
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Sampling flow rate (TWA)* | 0.2 L/min |
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Sampling volume (STEL/Peak/C)* | ||||||
Sampling flow rate (STEL/Peak/C)* | ||||||
Analytical method instruments | GC-FID | |||||
Method reference | OSHA PV2039 (partially validated) | |||||
Notes | ||||||
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 | |
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Sampler/Sampling media |
Bulk Method |
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On-Site Screening Techniques | ||||||
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Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
Exposure Limits | |||||||
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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 |
5 mg/m³ |
TLV-TWA |
5 mg/m³ [1992] |
PEL-TWA |
5 mg/m³ |
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PEL-STEL | REL-STEL | TLV-STEL |
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PEL-STEL |
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PEL-C | REL-C |
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TLV-C |
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PEL-C |
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Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
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 - Hydroquinone monomethyl ether NIOSH: Pocket Guide to Chemical Hazards - 4-Methoxyphenol Literature References
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Last Updated Date : 12/15/2020