General Description |
Field Definitions |
NAME: Nitric Acid
SYNONYM(s): Aqua fortis; White fuming nitric acid (WFNA); Red fuming nitric acid
(RFNA); Hydrogen nitrate
IMIS: 1860
CAS: 7697-37-2
NIOSH: RTECS QU5775000
DOT: 2032 44
DESCRIPTION:
Colorless, yellow, or red fuming liquid with an acrid, suffocating odor.
MW: 63
BP: 183 to 251 F
MP: -42 to -61 F
Exposure Limits
OSHA GENERAL INDUSTRY STANDARDS: 2 ppm, 5 mg/m3
OSHA CONSTRUCTION INDUSTRY STANDARDS: 2 ppm, 5 mg/m3 TWA
THRESHOLD LIMIT VALUE: 2 ppm, 5.2 mg/m3 TWA; 4 ppm, 10 mg/m3 STEL
RECOMMENDED EXPOSURE LIMIT: 2 ppm TWA; 4 ppm STEL
Health Factors
SYMPTOM(s): Eye, mucous membrane, skin irritation; delayed
pulmonary edema, pneumonitis, bronchitis; dental erosion
HEALTH EFFECTS: Acute lung damage (HE4) Irritation-Eye, Nose, Throat, Skin---Marked
(HE14)
ORGAN: Eyes, respiratory system, skin, teeth
Monitoring
SLC1:
MEDIA: Treated Silica Gel Tube (Supelco, ORBO-53; SKC, 226-10-03 or equivalent)
MAX V: 96 Liters MAX F: 0.2 L/min (TWA)
MAX V: 7.5 Liters MAX F: 0.5 L/min (STEL)
ANL 1: Ion Chromatography; IC
REF: 2 (OSHA ID-165SG)
SAE: 0.32
CLASS: Partially Validated
NOTE: Phosphoric, Nitric, and Sulfuric Acids may be submitted on the same sample
(TWA only). For STEL samples, submit as a separate sample. Make sure that glass fiber
filter plug is firmly in contact with silica gel before sampling and before sealing tube
for shipment.
SECONDARY SAMPLING/ANALYTICAL METHOD (SAM2):
DEVICE: Detector Tube COMPANY: Sensidyne
PART #: 15L RANGE: 0.2-40 ppm
CLASS: Mfg DEVICE: Detector Tube COMPANY: Draeger
PART #: 67 28311 RANGE: 1-50 ppm
CLASS: Mfg
WIPE:
MEDIA FOR LIQUID SOLUTIONS: Whatman smear tab; Solvent: Deionized .
Water |