N,N-Dimethylaniline CAS#121-69-7
N,N-dimethylaniline belongs to the family of tertiary amines. Its molecular structure is derived from aniline, where the two hydrogen atoms on the amino group are substituted by methyl groups. Classified as both a tertiary amine and a dimethylaniline isomer, this compound features distinctive chemical reactivity brought by its unique molecular construction, making it a valuable intermediate widely adopted in various industrial synthesis processes.
| 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 | n |
| Fp | 158 °F |
| storage temp. | Store below +30°C. |
| solubility | 1.2g/l |
| pka | 5.15(at 25℃) |
| form | Liquid |
| color | Clear yellow |
| PH | 7.4 (1.2g/l, H2O, 20℃) |
| Relative polarity | 0.179 |
| 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) |
| Dielectric constant | 4.4000000000000004 |
| 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). |
| 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℃ |
| CAS DataBase Reference | 121-69-7(CAS DataBase Reference) |
| IARC | 3 (Vol. 57) 1993 |
| NIST Chemistry Reference | Benzenamine, N,N-dimethyl-(121-69-7) |
| EPA Substance Registry System | N,N-Dimethylaniline (121-69-7) |
| Safety Information |
| Hazard Codes | T,N |
| Risk Statements | 61-20/21-51/53-40-23/24/25 |
| Safety Statements | 53-45-61-36/37-28A-28 |
| RIDADR | UN 2253 6.1/PG 2 |
| OEB | A |
| OEL | TWA: 5 ppm (25 mg/m3), STEL: 10 ppm (50 mg/m3) [skin] |
| 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 |
| Hazardous Substances Data | 121-69-7(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 1.41 ml/kg (Smyth) |
| IDLA | 100 ppm |
N,N-Dimethylaniline CAS#121-69-7
Product Application
N,N-Dimethylaniline is used in production of dyestuffs, as a solvent, a reagent in methylation reactions, and a hardener in fiberglass reinforced resins.
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.
Product Specifications
Basic Information
Product Name: N,N-Dimethylaniline
CAS No.: 121-69-7
Molecular Formula: C₈H₁₁N
Molecular Weight: 121.18
Appearance: Pale yellow to brown oily liquid
Purity: ≥99.0% (Customizable upon request)
Moisture: ≤0.2%
Boiling Point: 193 ℃
Flash Point: 73 ℃
Solubility: Slightly soluble in water, miscible with ethanol, ether, benzene and chloroform
Quality Standard
We support COA test report for each batch, including appearance, purity, moisture, impurity content and other test items. TDS, MSDS documents are available on request before shipment.
Application Scenarios by Industry
Dye & Pigment Industry
As a core aromatic amine intermediate for cationic dyes, basic dyes and triphenylmethane dyes. Widely applied in textile dyeing, paper coloring and ink colorant synthesis. The derived dyes show excellent brightness and fastness for acrylic fiber and paper coloring.
Pharmaceutical Industry
Applied for synthesis of multiple antibiotic and antimicrobial raw materials. It participates in the preparation of sulfonamide drugs, antifungal agents and cephalosporin series intermediates, strictly controlled for heavy metal and impurity levels to meet pharma-grade synthesis requirements.
Fine Chemical Synthesis
Serves as methylation reaction reagent and organic synthetic intermediate for vanillin. Used in biochemical testing as stabilizer for peroxidase colorimetric assay. Also acts as catalyst and raw material for organic synthesis of agrochemical intermediates.
Composite Material Industry
Works as curing accelerator for fiberglass reinforced unsaturated polyester resins. It shortens curing cycle of FRP products, widely used in FRP pipes, tanks, molded composite parts and glass fiber reinforced profiles.
Solvent Field
Functions as polar organic solvent for special resin and rubber processing, suitable for low-volatility dissolution system in fine chemical workshop.
Packaging & Transportation
Packaging Options
Standard package: 200kg iron drum
Customized packing: IBC tank 1000L available for bulk order
Inner lining: anti-corrosion sealing liner to prevent leakage and moisture invasion
Marking: UN hazard label, product name, CAS number, batch number, net weight printed on each package
Transport Requirements
This product belongs to hazardous chemicals. Transport shall comply with IMDG / IATA / GB hazardous goods regulations.
Keep away from fire, heat source and oxidizers during transit
Store and transport separately from food, feed and strong oxidants
Transport by professional dangerous goods logistics carrier
Avoid direct sunlight and heavy collision
Storage Condition
Sealed container, cool and dry warehouse. Storage temperature below 30℃. Keep away from oxidizing agents, acids and food materials. Shelf life: 12 months under proper storage.
Delivery Schedule
In stock goods: Shipment within 2–3 working days after receiving payment
New production batch: Production & delivery within 7–10 working days
For large bulk orders: Negotiate lead time separately
We can arrange FOB, CIF, EXW, FCA and other trade terms according to customer’s requirement.
After-sales Service
Document support: Supply MSDS, COA, TDS, customs declaration materials, hazard certification for clearance.
Quality feedback: If quality discrepancy occurs within agreed inspection period, we accept inspection and coordinate solutions.
Technical support: Our chemical team provides technical consultation for application, dosage and safe operation guidance.
Order tracking: Real-time cargo tracking after shipment, notify vessel schedule and document issuance.
Professional consultation: Remind customers of local import regulation and hazard clearance requirement for destination country.
Customer Cases
Case 1: Dye Factory in Southeast Asia
Long-term supply of N,N-Dimethylaniline as cationic dye intermediate. Stable purity reduces dye color deviation. Customer’s acrylic fiber dye production line maintains consistent color yield for over 3 years of cooperation.
Case 2: FRP Composite Manufacturer
Used as curing accelerator for unsaturated resin. Shortened resin curing time and improved finished FRP product surface smoothness.
Case 3: Fine Chemical Lab & Pharmaceutical Intermediate Plant
Small batch and bulk supply for biochemical reagent and drug intermediate synthesis. Batch COA provided for each shipment to satisfy quality audit.
FAQ
Q1: Can I get a sample for test?
A: Yes, we can provide small quantity samples for lab testing. Sample freight cost can be discussed.
Q2: Is the purity customizable?
A: Standard grade ≥99.0%. We can adjust specifications for special synthesis requirement, MOQ applies for customized grade.
Q3: What documents will you provide for customs clearance?
A: Commercial invoice, packing list, COA, MSDS, bill of lading and other required documents as requested.
Q4: What is the MOQ?
A: MOQ is 1 drum (200kg). Bulk order price will be more favorable.
Q5: Is this chemical dangerous? What safety precautions should be taken?
A: It is a hazardous organic chemical. Wear protective gloves, goggles and respirator when handling. Avoid skin contact and inhalation. Please refer to MSDS for full safety operation instruction.
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