Nitrourea | 556-89-8, Nitrourea Formula

Description

White, crystalline powder.Slightly soluble in water; soluble in alcohol,acetone, and acetic acid.

Nitrourea appears as a colorless to white crystalline powder solid. Mildly sensitive to heat and shock. An extremely powerful explosive. Decomposes to emit toxic nitrogen oxide fumes. May explode under exposure to intense heat or fire. Primary hazard is blast of an instantaneous explosion, not flying projectiles or fragments.

Nitrourea Basic Attributes

Molecular Weight：

105.05

Exact Mass：

105.05

EC Number：

209-144-0

UNII：

3UA35787YZ

NSC Number：

14982

UN Number：

0147

DSSTox ID：

DTXSID4060311

Characteristics

PSA：

101

XLogP3：

0.46080

Appearance：

Nitrourea appears as a colorless to white crystalline powder solid. Mildly sensitive to heat and shock. An extremely powerful explosive. Decomposes to emit toxic nitrogen oxide fumes. May explode under exposure to intense heat or fire. Primary hazard is blast of an instantaneous explosion, not flying projectiles or fragments.

Density：

1.557g/cm3

Melting Point：

158.5 °C (decomp)

Boiling Point：

197.01°C (rough estimate)

Refractive Index：

1.5

Flammability characteristics：

Thermal decomposition of toxic nitrogen oxide gas

Air and Water Reactions：

Hydrolysis occurs in water.

Reactive Group：

Amides and Imides

Reactivity Alerts：

Explosive

Reactivity Profile：

Explosive mercury or silver salts are rather sensitive to heat and impact, while the pure material is much more insensitive. Organonitrate compounds, such as NITROUREA, range from slight to strong oxidizing agents. If mixed with reducing agents, including hydrides, sulfides and nitrides, they may begin a vigorous reaction that culminates in a detonation. Nitroalkanes are milder oxidizing agents, but still react violently with reducing agents at higher temperature and pressures. Nitroalkanes react with inorganic bases to form explosive salts. The presence of metal oxides increases the thermal sensitivity of nitroalkanes.

Safety Information

Packing level：

II

Hazard category：

1.1D

Transport codes：

147

safety instructions：

17-36/37/39-45

Storage features：

Handle lightly; storeroom ventilated, away from open flames, high temperature, sunlight; stored separately from oxidants and flammables

Explosive characteristics：

High heat, vibration, impact, friction can be explosive

Precautionary statement(s)：

P210, P230, P240, P250, P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P380, P372, P373, P401, P501

Hazard Statements：

H201

Fire Hazards：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: MAY EXPLODE AND THROW FRAGMENTS 1600 METERS (1 MILE) OR MORE IF FIRE REACHES CARGO. For information on "Compatibility Group" letters, refer to Glossary section. (ERG, 2016)

GHS Classification：

|Danger|H201 (100%): Explosive; mass explosion hazard [Danger Explosives]|P210, P230, P240, P250, P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P380, P372, P373, P401, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.

Fire Fighting：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: CARGO FIRE: DO NOT fight fire when fire reaches cargo! Cargo may EXPLODE! Stop all traffic and clear the area for at least 1600 meters (1 mile) in all directions and let burn. Do not move cargo or vehicle if cargo has been exposed to heat. TIRE OR VEHICLE FIRE: Use plenty of water - FLOOD it! If water is not available, use CO2, dry chemical or dirt. If possible, and WITHOUT RISK, use unmanned hose holders or monitor nozzles from maximum distance to prevent fire from spreading to cargo area. Pay special attention to tire fires as re-ignition may occur. Stand by, at a safe distance, with extinguisher ready for possible re-ignition. (ERG, 2016)

Isolation and Evacuation：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: Isolate spill or leak area immediately for at least 500 meters (1/3 mile) in all directions. LARGE SPILL: Consider initial evacuation for 800 meters (1/2 mile) in all directions. FIRE: If rail car or trailer is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, initiate evacuation including emergency responders for 1600 meters (1 mile) in all directions. (ERG, 2016)

Nonfire Spill Response：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. DO NOT OPERATE RADIO TRANSMITTERS WITHIN 100 METERS (330 FEET) OF ELECTRIC DETONATORS. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. (ERG, 2016)

Personal Protective Equipment：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. (ERG, 2016)

Drug Information

Health Hazards：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: Fire may produce irritating, corrosive and/or toxic gases. (ERG, 2016)

First Aid：

Excerpt from ERG Guide 112 [Explosives* - Division 1.1, 1.2, 1.3 or 1.5]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. (ERG, 2016)

Nitrourea Use and Manufacturing

Methods of Manufacturing

Cool 700ml of concentrated sulfuric acid to -3°C, add 200g of dry powdered urea nitrate in portions, the temperature does not exceed 0°C, then pour the reactant on 1kg of crushed ice, filter, wash the filter cake with cold water, and dry to get 120 -150g nitrourea.

Uses

Used in organic synthesis and biochemical research.

Manufacturing Info：

Urea, N-nitro-: ACTIVE

Computed Properties

Molecular Weight:105.05
XLogP3:-0.9
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:3
Exact Mass:105.01744097
Monoisotopic Mass:105.01744097
Topological Polar Surface Area:101
Heavy Atom Count:7
Complexity:92.8
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes