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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 0910

Chemical Abstracts Service (CAS) Registry Number: 109-89-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: HZ8750000; 31431

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1154 Flammable Liquid

Chemical Description and Physical Properties:

colorless liquid with ammonia-like odor
molecular weight: 73
vapor pressure: 195 mm
boiling point: 132°F
melting point: -58°F

Incompatibilities: Strong oxidizers and acids

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 25 ppm, 75 mg/m3

Construction Industry: 25 ppm, 75 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 ppm, 15 mg/m3 TWA; 15 ppm, 45 mg/m3 STEL (Skin) A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 ppm TWA, 25 ppm STEL

Health Factors

Potential Symptoms: Eye, skin, respiratory irritation

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Myocardial degeneration (HE3)

Affected Organs: Respiratory system, skin, eyes

Additional Information:

  • Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.
Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Coated XAD-7 tube (80/40 mg sections, 20/50 mesh); coating is 10% (w/w) NBD-Chloride
    analytical solvent: Tetrahydrofuran
    maximum volume: 10 Liters
    maximum flow rate: 0.2 L/min (TWA)
    maximum volume: 3 Liters
    maximum flow rate: 0.2 L/min (STEL)
    current analytical method: High Performance Liquid Chromatography; HPLC/FLU/VIS
    method reference: 2 OSHA 41
    sampling and analytical error: 0.12
    method classification: Fully Validated
  • sampling media: Coated XAD-2 tube (80/40 mg sections, 20/50 mesh); coating is 10% 1-Naphthylisothiocyanate
    analytical solvent: Dimethylformamide
    maximum volume: 10 Liters
    maximum flow rate: 0.2 L/min (TWA)
    maximum volume: 3 Liters
    maximum flow rate: 0.2 L/min (STEL)
    current analytical method: High Performance Liquid Chromatography; HPLC/UL58
    method classification: Fully Validated
    method reference: 2 (OSHA In-house file)
    method classification: Partially Validated

Conditions: Column: CN Mobile Phase: 80:20 Isooctane: IPA Detector Wavelength: 465 EX: 525 EM (Fluor) Detection Limit: 1.6 ug/sample

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company: Gastec
    part #: 180
    range: 1-60 ppm
    class: Mfg
  • device: Detector Tube
    company: MSA
    part #: 92115
    range: 10-200 ppm
    class: Mfg
  • device: Detector Tube
    company: Kitagawa
    part #: 222S
    range: 1-20 ppm
    class: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 1.1 ppm @ 9.0 um
    class: Mfg
  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 103
    range: 0-50 ppm @ 8.7 um
    class: Mfg
  • device: Instrumentation
    company: PID
    part #: Photoionization Detector
    class: Mfg

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