N,N-Dimethylaniline , purifiedbyredistillation,≥99.5% , 121-69-7
Synonym(s):
Dimethylaminobenzene;N,N-Dimethylaniline
CAS NO.：121-69-7
Empirical Formula: C8H11N
Molecular Weight: 121.18
MDL number: MFCD00008304
EINECS: 204-493-5
PRODUCT 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 | n |
| Flash point: | 158 °F |
| storage temp. | Store below +30°C. |
| solubility | 1.2g/l |
| pka | 5.15(at 25℃) |
| form | Liquid |
| 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℃ |
Description and Uses
DMA, an aromatic amine, is a straw-coloredliquid with a characteristic amine-like odor. It turns brownon contact with air. Molecular weight= 121.20; Boilingpoint= 192℃; Freezing/Melting point = 2.2℃; Vaporpressure = 1 mmHg at 20℃; Flash point = 61℃;Autoignition temperature= 371℃. Explosive limits:LEL = 1%; UEL= 7%. Insoluble in water.
N,N-dimethylaniline is an important dye intermediate. It can be used to prepare alkaline yellow, Crystal Violet 5BN, basic magenta green, basic lake blue BB, basic brilliant blue R, cationic red 2BL, brilliant red 5GN, violet 3BL, brilliant blue, etc. In the pharmaceutical industry, the product can be used to manufacture cefazolin V, sulfamonomethoxine, Sulfadoxine, fluorocytosine, etc. moreover, It can be used as an intermediate to vanillin, a stabilizer for colorimetric peroxidase determination or as a reagent in chemical synthesis.
Safety
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301+H311+H331-H351-H411 |
| Precautionary statements | P201-P273-P280-P301+P310-P302+P352+P312-P304+P340+P311 |
| Hazard Codes | T,N |
| Risk Statements | 61-20/21-51/53-40-23/24/25 |
| Safety Statements | 53-45-61-36/37-28A-28 |
| OEB | A |
| OEL | TWA: 5 ppm (25 mg/m3), STEL: 10 ppm (50 mg/m3) [skin] |
| RIDADR | UN 2253 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | BX4725000 |
| F | 8 |
| Autoignition Temperature | 370 °C DIN 51794 |
| TSCA | Yes |
| HS Code | 2921 42 00 |
| HazardClass | 6.1 |
| PackingGroup | II |
| Toxicity | LD50 orally in rats: 1.41 ml/kg (Smyth) |
| IDLA | 100 ppm |
