Product Identification
【Product Name】4-Nitropyridine N-oxide 4-硝基吡啶-N-氧化物
【Synonyms】p-Nitropyridine N-oxide
【CAS】1124-33-0
【Formula】C5H4N2O3
【Molecular Weight】140.11000000000001
【EINECS】214-395-4
【RTECS】UT6380000
【RTECS Class】Tumorigen; Mutagen
【Beilstein/Gmelin】124331
【Beilstein Reference】5-20-05-00448
【EC Class】toxic, irritant

Physical and Chemical Properties
【Solubility in water】Very soluble
【Melting Point】161
【Boiling Point】397
【Vapor Pressure】4E-6 (25 C)
【Density】1.52 g/cm3
【Partition Coefficient】-1.47
【Heat Of Vaporization】62.2 kJ/mol
【Heat Of Combustion】-2551 kJ/mol

First Aid Measures
【Ingestion】Seek medical assistance.
【Inhalation】Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
【Skin】Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid sping material on unaffected skin.
【Eyes】Immediately flush with running water for at least 20 minutes.

Hazards Identification
【Ingestion】See Inhalation.
【Inhalation】TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
【Skin】Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
【Eyes】See Inhalation.
【Hazards】Contact with metals may evolve flammable hydrogen gas.
【EC Risk Phrase】R 21 25 36/37/38 40
【EC Safety Phrase】S 26 36/37/39 45
【UN (DOT)】2811

Exposure Controls/Personal Protection
【Personal Protection】Wear appropriate protective gloves, clothing and ggles.
【Respirators】Wear positive pressure self-contained breathing apparatus (SCBA).
【Poison Class】2

Fire Fighting Measures
【Flash Point】194
【Fire Fighting】Extinguish using agent most appropriate for surrounding fire.
【Fire Potential】Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures
【Small spills/leaks】ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Transport Information
【UN Number】2811
【HS Code】2933 39 99

Stability and Reactivity
【Combustion Products】Fire may produce irritating, corrosive and/or toxic gases.