|
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Nitrogen dioxide |
CAS 10102-44-0 | ||
NO2 |
RTECS QW9800000 | ||
|
Synonyms & Trade Names Dinitrogen tetroxide (N2O4), Nitrogen peroxide |
DOT ID & Guide 1067 124 |
||
Exposure
|
NIOSH REL: ST 1 ppm (1.8 mg/m3) | ||
| OSHA PEL†: C 5 ppm (9 mg/m3) | |||
| IDLH 20 ppm See: 10102440 | Conversion 1 ppm = 1.88 mg/m3 | ||
|
Physical Description Yellowish-brown liquid or reddish-brown gas (above 70°F) with a pungent, acrid odor. [Note: In solid form (below 15°F) it is found structurally as N2O4.] |
|||
|
MW: 46.0 |
BP: 70°F |
FRZ: 15°F |
Sol: Reacts |
|
VP: 720 mmHg |
IP: 9.75 eV |
RGasD: 2.62 |
Sp.Gr: 1.44 (Liquid at 68°F) |
|
Fl.P: NA |
UEL: NA |
LEL: NA |
|
| Noncombustible Liquid/Gas, but will accelerate the burning of combustible materials. | |||
|
Incompatibilities & Reactivities Combustible material, water, chlorinated hydrocarbons, carbon disulfide, ammonia [Note: Reacts with water to form nitric acid.] |
|||
|
Measurement Methods NIOSH 6014; OSHA ID182 See: NMAM or OSHA Methods |
|
Personal Protection & Sanitation (See protection) Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
|
Important additional information about respirator selection Respirator Recommendations NIOSH Up to 20 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£ (APF = 50) Any self-contained breathing apparatus with a full facepiece (APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode (APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern¿/Any appropriate escape-type, self-contained breathing apparatus |
|
| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, nose, throat; cough, mucoid frothy sputum, decreased pulmonary function, chronic bronchitis, dyspnea (breathing difficulty); chest pain; pulmonary edema, cyanosis, tachypnea, tachycardia | |
|
Target Organs
Eyes, respiratory system, cardiovascular system |
|
| See also: INTRODUCTION See ICSC CARD: 0930 See MEDICAL TESTS: 0164 |