MALEIC ANHYDRIDE†
CAS # | 108-31-6 |
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Formula |
C₄H₂O₃ |
Synonyms |
cis-butenedioic anhydride; 2,5-furanedione; maleic acid anhydride; toxilic anhydride |
Physical description | Colorless needles, white lumps, or pellets with an irritating, choking odor. | ||
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Boiling point | 396°F | Molecular weight | 98.06 |
Freezing point/melting point | 127°F | Vapor pressure | 0.2 mmHg |
Flash point | 218°F | Vapor density | |
Specific gravity | 1.43 at 59°F | Ionization potential | 9.90 eV |
Lower explosive limit (LEL) | 1.4% | Upper explosive limit (UEL) | 7.1% |
NFPA health rating | 3 | NFPA fire rating | 1 |
NFPA reactivity rating | 1 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Analyte code (IMIS no.) | 1618 | ||
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Sampling group | |||
Sampler/Sampling media | GFFs coated with veratrylamine (3,4-dimethoxybenzylamine) and di-n-octyl phthalate [SLTC100] | ||
Sampling time* | |||
Sampling volume (TWA)* | 60 L |
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Sampling flow rate (TWA)* | 0.5 L/min |
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Sampling volume (STEL/Peak/C)* |
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Sampling flow rate (STEL/Peak/C)* | |||
Analytical method instruments | HPLC | ||
Method reference | OSHA 86 (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. |
* 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 |
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Bulk Method |
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Device | |||||
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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 |
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PEL-TWA |
0.25 ppm (1 mg/m³) |
REL-TWA |
0.25 ppm (1 mg/m³) |
TLV-TWA |
0.01 mg/m³ (inhalable fraction and vapor) [2010] |
PEL-TWA |
0.1 ppm (0.4 mg/m³) |
PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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PEL-C |
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REL-C |
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TLV-C |
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PEL-C |
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Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
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Notes:
dermal sensitization (DSEN), respiratory sensitization (RSEN) |
Notes:
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Health factors: See NIH-NLM PubChem. | IDLH |
10 mg/m³ |
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Carcinogenic classifications: TLV-A4 |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
0.2 ppm/5 ppm/20 ppm |
Additional Resources and Literature References
NOAA: CAMEO Chemicals - Maleic anhydride NIOSH: Pocket Guide to Chemical Hazards - Maleic anhydride Literature References
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Last Updated Date : 01/04/2021