The form of N,N-dimethylaniline is: ‌colorless to light yellow or light brown oily liquid‌, with a pungent odor‌.

N,N-dimethylaniline (DMBA) has a wide range of uses, mainly including the following aspects:

‌1. Dye intermediates‌
DMBA is an important intermediate for the manufacture of vanillin, azo dyes, triphenylmethane dyes, etc.‌.

‌2. Solvents and stabilizers‌
It can also be used as a solvent and stabilizer, playing a role in dissolving and stabilizing other chemical substances in chemical production‌.

‌3. Analytical reagents‌
DMBA can also be used as an analytical reagent and has application value in chemical analysis and experiments‌.

It should be noted that although DMBA is widely used in the chemical industry, it is also considered a carcinogen, so special care should be taken during use and storage, and relevant safety regulations should be followed‌.

The properties of N,N-dimethylaniline mainly include the following aspects:

‌1. Physical properties‌
‌Appearance‌: colorless to light yellow or light brown oily liquid‌. ‌Odor‌: It has a pungent odor.
‌Solubility‌: It is soluble in various organic solvents such as ethanol, ether, chloroform, benzene, and slightly soluble in water.
‌Boiling point and melting point‌: The boiling point is about 193.1℃ to 193.5℃, and the melting point is relatively low, between 1.5-2.5°C.

‌II. Chemical properties‌
‌Flammability‌: The substance is flammable and will burn when exposed to open flames. The vapor and air can form an explosive mixture.
‌Toxicity‌: It is a highly toxic substance that can be absorbed through the skin and cause poisoning. It has similar toxicity to aniline.
‌Stability‌: It is easily oxidized in the air or in the sun, making the color darker.
‌Reactivity‌: It can react with a variety of chemicals, such as picric acid, alkyl halides, acylating agents, etc.

These properties require special attention to safety during the storage, transportation and use of N,N-dimethylaniline, and follow relevant operating procedures.

N,N-Dimethylaniline Chemical Properties
Melting point 1.5-2.5 °C (lit.)
Boiling point 193-194 °C (lit.)
density 0.956 g/mL at 25 °C (lit.)
vapor density 3 (vs air)
vapor pressure 2 mm Hg ( 25 °C)
refractive index n20/D 1.557(lit.)
Fp 158 °F
storage temp. Store below +30°C.
solubility 1.2g/l
form Liquid
pka 5.15(at 25℃)
color Clear yellow
Relative polarity 0.179
PH 7.4 (1.2g/l, H2O, 20℃)
explosive limit 1.2-7%(V)
Water Solubility 1 g/L (20 ºC)
Merck 14,3234
BRN 507140
Henry’s Law Constant 4.98(x 10-6 atm?m3/mol) at 20 °C (approximate – calculated from water solubility and vapor pressure)
Exposure limits NIOSH REL: TWA 5 ppm (25 mg/m3), STEL 10 ppm (50 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 5 ppm; ACGIH TLV: TWA 5 ppm, STEL 10 ppm (adopted).
Dielectric constant 4.4000000000000004
Stability: Stable. Incompatible with strong oxidizing agents, strong acids, acid chlorides, acid anhydrides, chloroformates, halogens. Combustible.
InChIKey JLTDJTHDQAWBAV-UHFFFAOYSA-N
LogP 1.171 at 35℃

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