MANGANESE CYCLOPENTADIENYL TRICARBONYL (as Mn) | Occupational Safety and Health Administration

MANGANESE CYCLOPENTADIENYL TRICARBONYL (as Mn)†

Chemical Identification
CAS #	12079-65-1
Formula	C₅H₅Mn(CO)₃
Synonyms	cyclopentadienylmanganese tricarbonyl; cyclopentadienyl tricarbonyl manganese; MCT

Physical Properties
Physical description	Yellow, crystalline solid with a characteristic odor.
Boiling point	sublimes	Molecular weight	204.1
Freezing point/melting point	167°F (sublimes)	Vapor pressure
Flash point		Vapor density
Specific gravity		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.)
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	See MANGANESE, COMPOUNDS & FUME (as Mn)
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.

Bulk/Wipe Method
Wipe 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		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	0.1 mg/m³	TLV-TWA	0.1 mg/m³ [1992]	PEL-TWA	0.1 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	5 mg/m³	REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Manganese cyclopentadienyl tricarbonyl

NIOSH: Pocket Guide to Chemical Hazards - Manganese cyclopentadienyl tricarbonyl (as Mn)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Manganese cyclopentadienyl tricarbonyl [12079-65-1], as Mn. See annual publication for most recent information.

Last Updated Date : 01/04/2021