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Chemical Sampling Information (CSI)
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General Description

Synonyms: Ethylene imine; Ethylenimine; Aziridine

OSHA IMIS Code Number: 1175

Chemical Abstracts Service (CAS) Registry Number: 151-56-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KX5075000; 35600

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1185 131P Poison Flammable Liquid

Chemical Description and Physical Properties:

colorless volatile liquid with intense odor of ammonia, poisonous
molecular weight: 43
vapor pressure: 160 mm
boiling point: 56 to 57°C
melting point: -78°C

Incompatibilities: Polymerizes explosively in presence of oxidizing materials

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 0.5 ppm, 1.0 mg/m3 TWA (Skin) (See also 29 CFR 1910.1012)

Construction Industry: 0.5 ppm, 1 mg/m3 TWA (Skin)

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.5 ppm, 0.88 mg/m3 TWA (Skin)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): Potential Carcinogen; Use 29 CFR 1910.1012

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans

Potential Symptoms: Nausea, vomiting; headaches; dizziness; pulmonary edema; liver and kidney damage; eye burns; skin sensitization; nose and throat irritation; (carcinogenic)

Health Effects: Cancer (Animals) (HE1); Irritation of Eyes and nose Lung & Kidney damage (TLV)

Affected Organs: Eyes, lungs, skin, liver, kidneys

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Fritted Glass Bubbler (MFGB) 15 mL Folin's Reagent
    maximum volume: 48 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UL44.
    method reference: 1 (NIOSH 300), 2 (OSHA In-House File)
    method classification: Partially Validated
    note: Folins reagent should be obtained by OSHA personnel from the Salt Lake Technical Center. Store reagent in a refrigerator and discard after 5 days. While sampling, wrap impingers and vials with aluminum foil to protect from light. After sampling keep samples cool. Ship samples to SLTC by overnight carrier packaged in a container with cold packs to keep samples cool.

Conditions: Chloroform extraction; C18 column; 50% ACN 50% water; UV det: 254; Retention time, 4 min; ext. eff. = 90%; C/P DBA

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company: MSA
    part #: 92115
    range: 2-100 ppm
    class: Mfg

    device: Detector Tube
    company: Gastec
    part #: 180
    range: 1-60 ppm
    class: Mfg

Bulk Method:

  • Limit the amount of bulk submitted to one gram or one mL.

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