Label abbreviations descriptions

ACETOIN

Chemical Identification
CAS # 513-86-0
Formula

C₄H₈O₂
Synonyms

acetyl methyl carbinol; 1-hydroxyethyl methyl ketone; γ-hydroxy-β-oxobutane; 3-hydroxy-2-butanone; 2,3-butanolone; dimethylketol

Physical Properties
Physical description A light-yellow colored liquid.
Boiling point 298.4°F Molecular weight 88.1
Freezing point/melting point 59°F Vapor pressure 2.7x10 (est)
Flash point 106°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
Analyte code (IMIS no.) A624
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*

180 min
Sampling volume (TWA)*

9 L
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 1012 (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.
Special requirements

Protect tubes from light after 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.

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 TLV-TWA PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

NA

 Skin notation

NA

 Skin notation

NA

 Skin notation

NA
Notes:

Not established

 Notes:

Not established

 Notes:

Not established

 Notes:

Not established
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

Last Updated Date : 12/15/2020