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Chemical Sampling Information (CSI)
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General Description

Synonyms: Ethylamine, anhydrous; Aminoethane; Monoethylamine

OSHA IMIS Code Number: 1070

Chemical Abstracts Service (CAS) Registry Number: 75-04-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: KH2100000; 33380

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1036 Flammable Gas

Chemical Description and Physical Properties:

colorless liquid or gas with a strong ammonia-like odor
molecular weight: 45
vapor pressure: 1.18 atm
boiling point: 62°F
melting point: -114°F

Incompatibilities: Strong acids and oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 10 ppm, 18 mg/m3

Construction Industry: 10 ppm, 18 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 ppm, 9.2 mg/m3 TWA; 15 ppm, 27.6 mg/m3 STEL (Skin)

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

Health Factors

Potential Symptoms: Eye irritation; skin burns; respiratory irritation; dermatitis

Health Effects: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Corneal injury (HE3)

Affected Organs: Respiratory system, eyes, skin

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
    current analytical method: High Performance Liquid Chromatography; HPLC/FLU/VIS
    method reference: 2 (OSHA 36)
    sampling analytical error: 0.13
    method classification: Fully Validated

Conditions: Column: CN Mobile Phase: 80:20 Isooctane:Isopropanol Detector Wavelength: 465 ex, 525 em fluor Detection Limit: 1.8 ng/inj

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Detector Tube
    company: MSA
    part #: 92115
    range: 10-300 ppm
    class: Mfg

  • device: Instrumentation
    company:     Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range:     1.4 ppm @ 3.4 um
    class: Mfg

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