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Nitrogen dioxide

Nitrogen dioxide structure

CAS No:
10102-44-0
Formula:
NO2
Chemical Name:
Nitrogen dioxide
Synonyms:
Nitrogen oxide (NO2);Nitrogen dioxide;Nitrito;Nitro;Nitrogen dioxide (NO2);Nitrogen peroxide;Nitrite radical;50443-93-1;56003-83-9;66252-28-6;78246-05-6;119990-11-3;127999-62-6;2332895-81-3
Categories:
Inorganic Chemistry > Industrial Gases

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.]

Nitrogen dioxide is the chemical compound with the formula NO 2. It is one of several nitrogen oxides. NO 2 is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year. At higher temperatures it is a reddish-brown gas that has a characteristic sharp, biting odor and is a prominent air pollutant. Nitrogen dioxide is a paramagnetic, bent molecule with C2v point group symmetry.

Nitrogen dioxide Basic Attributes

Molecular Weight：

46.01

Exact Mass：

45.99290

EC Number：

233-272-6

Characteristics

PSA：

30.4

XLogP3：

-0.3

Appearance：

COLOURLESS SOLID, BROWN LIQUID OR RED-BROWN GAS

Density：

1.45 g/cm³

Melting Point：

-9.3 °C

Boiling Point：

21.15 °C

Flash Point：

< 20ºC

Refractive Index：

1.449 (at 20 °C)

Water Solubility：

H2O: Reacts

Storage Conditions：

Ventilation along the floor.

Vapor Pressure：

14.33 psi ( 20 °C)

Vapor Density：

1.58 (21 °C, vs air)

Toxicity：

Inhalation-Rat LC50: 88 PPM/4 hours; Inhalation-Mouse LC50: 1000 PPM/10 minutes

Flammability characteristics：

Combustion; strong oxidizing

Safety Information

Hazard category：

2.3

Transport codes：

UN 1067 2.3

wgk germany：

hazard class code：

26-34-8

safety instructions：

9-26-28-36/37/39-45

RTECS Number：

QX1575000

Marks：

T+,O

Storage features：

The warehouse is ventilated, low temperature and dry; stored separately from combustibles and combustibles

Precautionary statement(s)：

P220, P244, P260, P264, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P320, P321, P363, P370+P376, P403, P403+P233, P405, P501

Hazard Statements：

H270

RIDADR：

UN 1067

Caution Statement：

P220; P244; P260; P280; P304 + P340 + P310; P305 + P351 + P338

Toxicity

Toxicity class：

most toxic

Name	Type of Test	Exposure Route	Species Observed	Dose/Duration	Toxic Effects	Reference
ACUTE TOXICITY DATA	LCLo - Lowest published lethal concentration	Inhalation	Human	200 ppm/1M	Details of toxic effects not reported other than lethal dose value--	Annals of Occupational Hygiene. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.1- 1958- Volume(issue)/page/year: 17,159,1974
ACUTE TOXICITY DATA	TCLo - Lowest published toxic concentration	Inhalation	Human - man	6200 ppb/10M	Lungs, Thorax, or Respiration--changes in pulmonary vascular resistance	Koshu Eiseiin Kenkyu Hokoku. Bulletin of the Institute of Public Health. (Kokuritsu Koshu Eiseiin, 4-6-1 Shirokanedai Minato-ku, Tokyo 108, Japan) V.1- 1951- Volume(issue)/page/year: 17,337,1968
ACUTE TOXICITY DATA	TCLo - Lowest published toxic concentration	Inhalation	Human - man	90 ppm/40M	Lungs, Thorax, or Respiration--cough Lungs, Thorax, or Respiration--dyspnea Lungs, Thorax, or Respiration--other changes	Journal of Occupational Medicine. (Chicago, IL) V.1-9, 1957-67. For publisher information, see:JJOMDZ Volume(issue)/page/year: 8,301,1966

Nitrogen dioxide Use and Manufacturing

Methods of Manufacturing

Nitrogen dioxide is an intermediate product of ammonia oxidation to produce nitric acid. For the preparation method, see nitric acid.

Uses

Intermediate in nitric and sulfuric acid production.Used in the nitration of organic Compounds and explosives, in the manufacture of oxidized cellulose Compounds (hemostatic cotton).Has been used to bleach flour.Proposed as oxidizing agent in rocket propulsion.See also:Sisler, "Reactions in Liquid Dinitrogen Tetroxide," J. Chem. Educ. 34, 555 (1957).

Synthesis Route

13536-70-4

7726-95-6

10102-44-0

Suppliers(73)

13536-70-4

10097-32-2

7726-95-6

10102-44-0

Suppliers(73)

Material

Hydrogen

Nitric acid

Oxygen

Recommended Suppliers of Nitrogen dioxide

Chengdu Xenon Tritium Technology Co.,Ltd. Contact Supplier

CN
1 YR

Business licensed

Trader Supplier of Industrial Gases

Nitrogen Dioxide Supplier NO2 Gas

CAS No.: 10102-44-0

Grade: Industrial Grade

Content: 99.999%

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