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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 1267

Chemical Abstracts Service (CAS) Registry Number: 12604-58-9

Other Chemical Abstracts Service (CAS) Registry Numbers: 11147-86-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: LK2900000

Chemical Description and Physical Properties:

dark, odorless solid particles
vapor pressure: approx. 0 mm

Incompatibilities: Strong oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 1 mg/m3

Construction Industry: 1 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 mg/m3 TWA; 3 mg/m3 STEL

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1 mg/m3 TWA; 3 mg/m3 STEL

Health Factors

Potential Symptoms: Eye, respiratory system irritation; In animals: bronchitis, pneumonitis

Health Effects: Irritation-Eye, Nose, Throat, Skin---Mild (HE16)

Affected Organs: Respiratory system, eyes

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 960 Liters
    minimum volume: 480 Liters
    maximum flow rate: 2.0 L/min (TWA)
    maximum volume: 30 Liters
    maximum flow rate: 2.0 L/min (STEL)
    current analytical method: Atomic Absorption Spectroscopy; AAS
    method reference: 2 (OSHA ID-121)
    sampling analytical error: 0.19
    method classification: Fully Validated
    alternate analytical method: Inductively Coupled Argon Plasma; ICP/AES
    method reference: 2 (OSHA ID-125G)
    sampling analytical error: 0.12
    method classification: Fully Validated
    note: If the filter is not overloaded, samples may be collected up to + an 8-hour period. Analytical method does not distinguish between dust and fume. When analysis of a compound is requested, an elemental analysis is performed and reported as the compound.

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