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NITROGEN DIOXIDE suppliers
- CAS:
- 10102-44-0
- MF:
- NO2*
- MW:
- 46.01
Properties
- Melting point::
- −11 °C(lit.)
- Boiling point::
- 21 °C(lit.)
- Density :
- 2.62 g/mL at 25 °C(lit.)
- vapor density :
- 1.58 (21 °C, vs air)
- vapor pressure :
- 14.33 psi ( 20 °C)
- solubility :
- reacts with H2O
- form :
- brown gas
- color :
- brown gas; equil with NO 4
- Odor:
- Pungent, acrid odor detectable at 0.12 ppm
- Odor Threshold:
- 0.12ppm
- Water Solubility :
- decomposes in H2O to HNO3 and releases NO; soluble conc H2SO4, HNO3 [MER06]
- Exposure limits:
- TLV-TWA 3 ppm (~6 mg/m3) (ACGIH), ceiling in air 5 ppm (MSHA and OSHA); STEL 5 ppm (ACGIH); IDLH 50 ppm (NIOSH).
SecurityInformation
- Symbol(GHS) :
-
GHS03,GHS04,GHS05,GHS06
- Signal word :
- Danger
- Hazard statements :
- H270-H314-H330-H412
- Precautionary statements :
- P220-P244-P260-P280-P304+P340+P310-P305+P351+P338
- Hazard Codes :
- T+,O
- Risk Statements :
- 26-34-8
- Safety Statements :
- 9-26-28-36/37/39-45
- RIDADR :
- UN 1067 2.3
- WGK Germany :
- 1
- RTECS :
- QX1575000
- DOT Classification:
- 2.3, Hazard Zone A (Gas poisonous by inhalation)
- HazardClass :
- 2.3
- HS Code :
- 28112900
- Toxicity:
-
LC50 inhal (rat)
88 ppm (4 h)
PEL (OSHA)
5 ppm (9 mg/m3; ceiling)
TLV-TWA (ACGIH)
3 ppm (5.6 mg/m3)
STEL (ACGIH)
5 ppm (9.4 mg/m3)
- IDLA:
- 13 ppm
- Use:
- Nitrogen dioxide is an intermediate in producing nitric acid. It also is used in the lead chamber process for making sulfuric acid. It is used as a nitrating and oxidizing agent, in rocket fuels, in the manufacture of hemostatic cotton and other oxidized cellulose compounds, and in bleaching flour. Nitrogen dioxide occurs in trace concentrations in the atmosphere due to oxidation of nitric oxide in air. It also is found in exhaust gases of internal combustion engines, in industrial waste gases from plants using nitric acid, and in cigarette smoke. Brown color of smog in many industrial urban areas is attributed to nitrogen dioxide.
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