NAME: Barium Sulfate (Respirable Fraction)
SYNONYM(s): Actybaryte; Artificial Barite; Barium Sulphate; Sulfuric Acid, Barium Salt (1:1)
IMIS: B104
CAS: 7727-43-7
NIOSH: RTECS CR0600000; 11862
DESCRIPTION:
MW: 233.40
MOLFM: O4S.Ba
Exposure Limits
NIOSH REL: 5 mg/m3 TWA
Health Factors
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns preceded by 10 mm Nylon Cyclone
MAX V: 816 Liters MIN V: 408 Liters MAX F: 1.7 L/min
ANL 1: Gravimetric
REF: 11, 12
SAE: 0.10
CLASS: Fully Validated
NOTE: Field method. If the gross weight of the sample yields a concentration below the standard for the air contaminate, do not submit sample to SLTC for analysis.
ANL A: Atomic Absorption Spectroscopy; AAS
REF: 2 (OSHA ID-121)
CLASS: Not Validated
NOTE: Submit as a separate sample. An elemental analysis is + performed for Barium and reported as the compound.
COND: Barium Sulfate is soluble in concentrated sulfuric acid. The ICP digestion (Sulfuric, Hydrochloric acids) is performed on samples with analysis by AAS.
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