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

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

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

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

Affected Organs: Respiratory system, eyes

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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