Chemistry
2-Nitrodiphenylamine(119-75-5), also called NDPA, 2-NDPA, 2NO2DPA, Sudan Yellow 1339, C.I. 10335, CI 10335, phenyl 2-nitrophenylamine, 2-nitro-N-phenylaniline, or N-phenyl-o-nitroaniline, is an organic chemical, a nitrated aromatic amine, a derivate of diphenylamine. Its chemical formula is C
12H
10N
2O
2, or C
6H
5NHC
6H
4NO
2. It is a red crystalline solid, usually in form of flakes or powder, with melting point of 74-76 °C and boiling point of 346 °C. It is polar but hydrophobic. Its CAS number is 119-75-5.
The molecular structure of 2-Nitrodiphenylamine(119-75-5):
Uses
2-Nitrodiphenylamine(119-75-5) is used as a stabilizer for synthetic rubbers, explosives, propellants (eg. in Otto fuel II, smokeless powders, in some US Army double-base propellants in solid rockets, and in other applications involving nitric acid esters), plastics, and lubricants. It is also an intermediate for organic synthesis, and a civilian solvent dye.
In some explosives, it is used to control the explosion. One of its major uses is to control the explosion rate of propylene glycol dinitrate.
As a stabilizer, its major role is to eliminate the acidic nitrates and nitrogen oxides produced by gradual decomposition of nitric acid esters, which would otherwise autocatalyze further decomposition. Its amount is usually 1-2% of the mixture; higher amounts than 2% degrade the propellant's ballistic properties. The amount of the stabilizer depletes with time; remaining content of less than 0.5% (with initial 2% content) requires increased surveillance of the munition, with less than 0.2% warranting immediate disposal, as the depletion of the stabilizer may lead to autoignition of the propellant.
Toxicity Data With Reference
RTECS#: CAS# 119-75-5: None listed
LD50/LC50: RTECS: Not available. Other: Oral, rat: LD50 > 3200 mg/kg
Carcinogenicity: 2-Nitrodiphenylamine - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.
Other: The toxicological properties have not been fully investigated.
Safety Profile
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36-37/39
WGK Germany 3
Hazard Note Irritant
HS Code 29214400
Specification
Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: High temperatures, incompatible materials.
Incompatibilities with Other Materials Strong oxidizing agents, strong acids.
Hazardous Decomposition Products Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization Has not been reported.
Xi
