NAME: Osmium Tetroxide (as Os)
SYNONYM(s):
Osmic acid
IMIS: 1960
CAS: 20816-12-0
NIOSH: RTECS RN1140000
DOT: 2471 55
DESCRIPTION:
Colorless to pale yellow solid with an odor like chlorine; sharp
and choking.
MW:
254
VP:
11 mm at 27 C
BP:
130 C (Sublimes well below BP)
MP:
40.6 C
INCOM:
Hydrochloric acid, easily oxidized organic materials
Exposure Limits
OSHA GENERAL INDUSTRY PEL:
0.002 mg/m3
OSHA CONSTRUCTION INDUSTRY PEL:
0.002 mg/m3 TWA
ACGIH TLV:
0.0002 ppm, 0.0016 mg/m3 TWA; 0.0006 ppm, 0.0047 mg/m3 STEL
NIOSH REL:
0.0002 ppm TWA; 0.0006 ppm STEL
Health Factors
SYMPTOM(s):
Lacrimation, vision disturbance, conjunctivitis; headaches; coughing,
dyspnea; dermatitis
HEALTH EFFECTS:
Irritation-Eye, Nose, Throat, Skin---Marked (HE14)
Lung edema (HE11)
ORGAN:
Eyes, respiratory system, skin
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Mixed Cellulose Ester Filter (MCEF) 0.8 microns in series with a Midget Fritted Glass Bubbler (MFGB) containing 15 mL Distilled Water
MAX V:
480 Liters MIN V:
480 Liters MAX F:
1.0 L/min (TWA)
MAX V:
15 Liters MAX F:
1.0 L/min (STEL)
ANL 1:
Inductively Coupled Argon Plasma; ICP/DCP-AES
REF:
2 (OSHA ID-125G)
CLASS:
Not Validated
ANL A:
Neutron Activation Analysis; NAA
REF:
2 (OSHA In-House File)
CLASS:
Not Validated
NOTE:
Before sampling, OSHA personnel are to contact SLTC for any additional instructions or changes to sampling strategies. When analysis of the compound is requested, an elemental analysis is performed and reported as the compound.
|
Back to Top
