3,4-Diaminotoluene CAS#496-72-0
3,4-Diaminotoluene, alternatively named 4-methyl-1,2-phenylenediamine, is an organic chemical featuring the molecular formula C₇H₁₀N₂ and a molecular weight of 122.17. Its melting point is recorded at 87–89°C (literature value), and its boiling point is 265°C.
The material occurs as off-white to pale brown flaky crystals. It shows limited solubility in cold water and undergoes sublimation when heated. Owing to the reactive amino groups within its structure, 3,4-Diaminotoluene serves as a critical intermediate extensively applied in dye fabrication and organic synthesis.
3,4-Diaminotoluene Chemical Properties
Melting point | 87-89 °C (lit.) |
Boiling point | 155-156 °C/18 mmHg (lit.) |
density | 1.2207 (rough estimate) |
refractive index | 1.5103 (estimate) |
Fp | 155-156°C/18mm |
storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
solubility | Chloroform (Sparingly), Methanol (Slightly) |
pka | 4.59±0.10(Predicted) |
form | Crystalline Chunks or Flakes |
color | Brown to grayish-brown |
Water Solubility | 16 g/L (20 ºC) |
BRN | 507965 |
Stability: | Stable. Incompatible with strong oxidizing agents. |
CAS DataBase Reference | 496-72-0(CAS DataBase Reference) |
NIST Chemistry Reference | 1,2-Benzenediamine, 4-methyl-(496-72-0) |
EPA Substance Registry System | 3,4-Diaminotoluene (496-72-0) |
Hazard Codes | Xn |
Risk Statements | 20/21/22-36/37/38-52/53-40-36-22 |
Safety Statements | 26-37/39-61-36/37/39 |
RIDADR | UN 2811 |
WGK Germany | 2 |
RTECS | XS9820000 |
TSCA | Yes |
HazardClass | 6.1(b) |
PackingGroup | III |
HS Code | 29215119 |
Hazardous Substances Data | 496-72-0(Hazardous Substances Data) |
Product Application of 3,4-Diaminotoluene CAS#496-72-0
It is mainly utilized for producing high-grade organic pigment Disperse Fluorescent Yellow. Additionally, it can function as rust and corrosion inhibitors, and act as an intermediate to prepare dye precursors, organic synthesis building blocks, and synthetic metal complexes involving silver, copper, lead, nickel and zinc.
