<< Back to Chemical Sampling Information

Chemical Sampling Information (CSI)
Search (use word(s)/phrase)
Table of Contents
By Name
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

By CAS Number
Quick Links
General Description

Synonyms: Dibrom; Naled

OSHA IMIS Code Number: 0932

Chemical Abstracts Service (CAS) Registry Number: 300-76-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TB9450000; 58771

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN2783; 152

Chemical Description and Physical Properties:

colorless solid or straw-colored liquid with a slightly pungent odor
molecular weight: 381
boiling point: Decomposes
vapor pressure: 0.0002 mm
melting point: 81°F

Incompatibilities: Strong oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 3 mg/m3

Construction Industry: 3 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 TWA (Inhalable Fraction) (Vapor and Aerosol) (Skin); Appendix A4 (Not Classifiable as a Human Carcinogen); SEN; BEI

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 3 mg/m3 TWA (Skin)

Health Factors

Potential Symptoms: Miosis, lacrimation; headaches; tightness in chest, wheezing, laryngeal spasms; salivation; cyanosis; anorexia, nausea, vomiting, abdominal cramping, diarrhea; weakness, twitching, paralysis; giddiness; ataxia, convulsions; low blood pressure; cardiac irregularities; eye, skin irritation

Health Effects: Cholinesterase inhibition (HE6); Mutagen (HE2) LD50 (oral, rat) 430 mg/kg

Affected Organs: Respiratory system, CNS, CVS, skin, eyes, blood cholinestera

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/60 mesh) with Glass Fiber Filter enclosed
    maximum volume: 60 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/FPD
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated
    note: OSHA personnel may obtain sampling tubes from the Salt Lake Technical Center

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter

Bulk Method: Limit the amount of bulk submitted to one gram or one mL.

** All Trademarks are the property of their respective owners.