2,6-Diaminotoluene Chemical Properties

Melting point:

104-106 °C(lit.)

Boiling point:

289 °C

Density 

1.0343 (rough estimate)

refractive index 

1.5103 (estimate)

solubility 

soluble in Ether,Alcohol

pka

4.74±0.10(Predicted)

form 

Powder, Chunks or Pellets

color 

Dark gray to brown or black

Water Solubility 

60 g/L (15 ºC)

BRN 

2079476

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents, strong acids.

InChIKey

RLYCRLGLCUXUPO-UHFFFAOYSA-N

CAS DataBase Reference

823-40-5(CAS DataBase Reference)

NIST Chemistry Reference

1,3-Benzenediamine, 2-methyl-(823-40-5)

EPA Substance Registry System

2,6-Diaminotoluene (823-40-5)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

21/22-43-51/53-68-50/53-40

Safety Statements 

24-36/37-61

RIDADR 

UN 3077 9/PG 3

WGK Germany 

3

RTECS 

XS9750000

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

29215190

Hazardous Substances Data

823-40-5(Hazardous Substances Data)

MSDS

• Language:English Provider:2,6-Diamino-1-methylbenzene
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

2,6-Diaminotoluene Usage And Synthesis

Chemical Properties

off-white crystals

Uses

Aromatic amines likely to have high carcinogenic potency. QSARs of aromatic amines.

Definition

ChEBI: A diamine that is toluene in which both of the hydrogens ortho- to the methyl group are replaced by amino groups.

Production Methods

2,6-Toluenediamine is usually produced as a by-product with 2,4-TDA in mixtures containing 20% 2,6-isomer and 80% 2,4-isomer. It is used primarily in the manufacture of toluene diisocyanate, the predominant isocyanate in the flexible polyurethane foams and elastomers industry.
Human exposure to 2,6-TDA may occur indirectly via exposure to toluene diisocyanate mixture containing 2,6- toluenediisocyanate, which is known to hydrolyze to 2,6- TDA rapidly upon contact with water. Workers in some plastics and elastomers industries may be exposed to atmosphere containing TDI.

General Description

Colorless prisms (from water).

Air & Water Reactions

Water soluble.

Reactivity Profile

2,6-Diaminotoluene neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Health Hazard

ACUTE/CHRONIC HAZARDS: 2,6-Diaminotoluene is toxic. It is a local irritant.

Fire Hazard

Flash point data for 2,6-Diaminotoluene are not available. 2,6-Diaminotoluene is probably combustible.

2,6-Diaminotoluene(823-40-5)Related Product Information

• Basic Violet 1
• 2,5-DIAMINOTOLUENE
• p-Toluidine
• 1,3-Diaminoguanidine monohydrochloride
• m-Xylene
• Kresoxim-methyl
• Methyl salicylate
• 3-Aminobenzotrifluoride
• Tribenuron methyl
• Benzylamine
• o-Xylene
• Methylparaben
• Methyl acrylate
• METSULFURON METHYL
• Xylene
• m-Phenylenediamine
• Methanol
• 2,5-DIAMINOTOLUENE SULPHATE,2,5-DIAMINOTOLUENE SULFATE