2,3-PENTANEDIONE

Chemical Identification
Chemical Identification
CAS # 600-14-6
Formula

C₅H₈O₂

Synonyms

acetyl propanal; acetyl propionyl; β, γ-dioxopentane; 2,3-pentadione

Physical Properties
Physical Properties
Physical description Yellow to green-yellow liquid with a buttery odor.
Boiling point 230-234°F Molecular weight 100.12
Freezing point/melting point -61.6°F Vapor pressure 2.67 kPa
Flash point 66°F 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
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) P110
Sampling group
Sampler/Sampling media 2 Specially dried silica gel tubes in series; each tube has a single 600 mg section and a GFF, filter faces forward when sampling [SKC 226-183]
Sampling time*

200 min

Sampling volume (TWA)*

10 L (9 L if also sampling for diacetyl and/or acetoin)

Sampling flow rate (TWA)*

0.05 L/min

Sampling volume (STEL/Peak/C)*

3 L

Sampling flow rate (STEL/Peak/C)*

0.2 L/min

Analytical method instruments GC-FID
Method reference OSHA 1016 (fully validated)
Notes

Use an opaque tube holder or wrap tubes with aluminum foil or other opaque material while sampling.

Separate the 2 tubes and cap both ends of each tube as soon as possible after sampling. Individually seal the 2 tubes. Protect tubes from light after sampling.

 

Special requirements

Samples should be kept cold and shipped cold to the lab by overnight shipping as soon as possible.

* 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
Wipe Method
Sampler/Sampling media
 

 

Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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
 

<9.3 ppb [as an 8-hr TWA]

TLV-TWA
 

 

PEL-TWA
 

 

PEL-STEL
 

 

REL-STEL
 

31 ppb [15 minutes]

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

NA

Skin notation
 

N

Skin notation
 

NA

Skin notation
 

NA

Notes:
 

Not established

Notes:
 

 

Notes:
 

Not established

Notes:
 

Not established

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 

Last Updated Date : 12/15/2020