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Chemical Sampling Information (CSI)
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General Description

Synonyms: sec-Butyl ester of acetic acid, 1-Methylpropyl acetate

OSHA IMIS Code Number: 0441

Chemical Abstracts Service (CAS) Registry Number: 105-46-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: AF7380000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1123 129

NIOSH Pocket Guide to Chemical Hazards, sec-Butyl acetate: chemical description, physical properties, potentially hazardous incompatibilities, and more.


Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 29 CFR 1910.1000 Z-1 Table -- 200 ppm, 950 mg/m3 TWA

Construction Industry: 29 CFR 1926.55 Appendix A -- 200 ppm, 950 mg/m3 TWA

Maritime: 29 CFR 1915.1000 Table Z-Shipyards -- 200 ppm, 950 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 200 ppm, 950 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 200 ppm, 950 mg/m3 TWA

Health Factors

NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 1,700 ppm [LEL]

Potential Symptoms: Eye irritation; headaches, drowsiness; dry upper respiratory system, dry skin

Health Effects: Irritation-Eye, Nose, Throat---Moderate (HE15); Narcosis (HE8)

Affected Organs: Eyes, skin, respiratory system

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • sampling media: Charcoal Tube (100/50 mg sections; 20/40 mesh)
    analytical solvent: Carbon Disulfide
    maximum volume: 12 Liters
    maximum flow rate: 0.05 L/min (TWA)
    maximum volume: .75 Liter
    maximum flow rate: 0.05 L/min (STEL)
    current analytical method: Gas Chromatography; GC/FID
    method reference: OSHA Analytical Method (OSHA 1009)
    method classification: Fully Validated

  • sampling media: Diffusive Sampler:
    • 3M 3520 Organic Vapor Monitor;
    • SKC 575-002 Passive Sampler

analytical solvent: Carbon Disulfide
minimum time: 15 to 240 minutes
current analytical method: Gas Chromatography; GC/FID
method reference: OSHA Analytical Method (OSHA 1009)
method classification: Fully Validated
note: Persons using diffusive samplers to monitor workplace air must ensure that the sampling devices are properly closed before transporting such devices to the laboratory for analysis. The device will continue to sample until properly closed. Diffusive sampler accessories used for analysis of samplers must be included with transported samples. Persons using such devices must provide sampling-site station barometric pressure and temperature to the analytical laboratory to improve accuracy of sampling results.

  • sampling media: Charcoal Tube (100/50 mg sections; 20/40 mesh)
    analytical solvent: Carbon Disulfide
    alternate analytical solvent: (99:1) Carbon Disulfide:Dimethylformamide
    alternate analytical solvent: (95:5) Methylene Chloride:Methanol
    maximum volume: 10 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: NIOSH Analytical Method (NIOSH 1450 [107 KB PDF, 6 pages)
    method classification: Fully Validated
    note: Samples should be refrigerated as soon as possible after sampling and sent cold to the laboratory.

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