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Chemical Sampling Information (CSI)
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General Description

Synonyms: acetyl propanal; acetyl propionyl; ,γ-dioxopentane; beta, gamma-dioxopentane; 2,3-pentadione

OSHA IMIS Code Number: P110

Chemical Abstracts Service (CAS) Registry Number: 600-14-6

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: SA1850000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN 1224 (ketones liquid n.o.s.) and UN 1993 (flammable liquid)

Chemical Description and Physical Properties:
yellow to green-yellow liquid with a butter odor
molecular formula: C5H8O2
molecular weight: 100.12
boiling point: 110-112C
melting point: -52C
vapor pressure: 2.67 kPa @ 20C
Incompatibilities: heat; electrostatic charge; oxidizing agents; reducing agents; strong bases


Health Factors

Potential Symptoms: eye, skin and respiratory irritant

Health Effects: may be harmful if inhaled as it causes respiratory tract irritation; causes skin irritation; causes eye irritation; may be harmful if swallowed

Affected Organs: skin, eyes, respiratory system


Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:
  • sampling media: Two specially dried Silica Gel Tubes in series. Each tube has a single 600-mg 20/40 mesh section and a glass-fiber filter, the filter faces forward when sampling. SKC 226-183, or equivalent. Use an opaque tube holder or wrap tubes with aluminum foil or other opaque material while sampling.
    maximum volume: 10 liters for long-term sampling (9 liters if sampling for diacetyl and/or acetoin); 3 liters for short-term sampling
    minimum flow rate: 0.05 L/min for long-term sampling; 0.2 L/min for short-term sampling
    analytical solvent: (95:5) ethanol: water
    current analytical method: Gas Chromatography; GC/FID
    method reference: OSHA Analytical Method (OSHA 1016)
    method classification: Fully Validated
    note: Separate the two tubes and cap both ends of each tube as soon as possible after sampling. Individually seal the two tubes. Protect tubes from light after sampling. Samples should be kept cold and shipped cold to the lab by overnight shipping as soon as possible.
Bulk Method: GC/FID

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