N,N-Dimethyl-p-toluidine
- Product Name
- N,N-Dimethyl-p-toluidine
- CAS No.
- 99-97-8
- Chemical Name
- N,N-Dimethyl-p-toluidine
- Synonyms
- N,N,4-Trimethylaniline;Dimethyl-p-toluidine;dimethyltoluidine;n,n-dimethyl-p-toluidin;N,N-DIMETHYL-4-TOLUIDINE;N,N-Dimethyl-p-tolylamine;N,N-DIMETHYL-4-METHYLANILINE;4,N,N-TrimethyL;N,N,4-trimethyl-;DIMETHYLTOLYLAMINE
- CBNumber
- CB4196682
- Molecular Formula
- C9H13N
- Formula Weight
- 135.21
- MOL File
- 99-97-8.mol
N,N-Dimethyl-p-toluidine Property
- Melting point:
- -25°C
- Boiling point:
- 211 °C(lit.)
- Density
- 0.937 g/mL at 25 °C(lit.)
- vapor density
- >1 (vs air)
- vapor pressure
- 0.1 hPa (20 °C)
- refractive index
- n20/D 1.546(lit.)
- Flash point:
- 182 °F
- storage temp.
- Store below +30°C.
- solubility
- 0.65g/l
- form
- Liquid
- pka
- pK1:7.24(+1) (25°C)
- color
- Clear yellow
- explosive limit
- 7%
- Water Solubility
- Miscible with alcohol, ether and chloroform. Immiscible with water.
- BRN
- 774409
- Dielectric constant
- 3.3（20℃）
- Stability:
- Stable. Combustible. Incompatible with strong oxidizing agents.
- InChIKey
- GYVGXEWAOAAJEU-UHFFFAOYSA-N
- LogP
- 1.729-2.81 at 35℃
- CAS DataBase Reference
- 99-97-8(CAS DataBase Reference)
- IARC
- 2B (Vol. 115) 2018
- EPA Substance Registry System
- N,N,4-Trimethylaniline (99-97-8)
Safety
- Hazard Codes
- T
- Risk Statements
- 23/24/25-33-52/53
- Safety Statements
- 28-36/37-45-61-28A-51-44-36-22-20/21
- RIDADR
- 1708
- WGK Germany
- 3
- RTECS
- XU5803000
- F
- 8-10-23
- Autoignition Temperature
- 425 °C
- TSCA
- Yes
- HS Code
- 2921 43 00
- HazardClass
- 6.1
- PackingGroup
- II
- Hazardous Substances Data
- 99-97-8(Hazardous Substances Data)
- Toxicity
- LD50 orally in Rabbit: 1650 mg/kg
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H330Fatal if inhaled
H373May cause damage to organs through prolonged or repeated exposure
H412Harmful to aquatic life with long lasting effects
- Precautionary statements
-
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P314Get medical advice/attention if you feel unwell.
N-Bromosuccinimide Price
- Product number
- 8.22040
- Product name
- N,N-Dimethyl-p-toluidine
- Purity
- for synthesis
- Packaging
- 5ML
- Price
- $27.1
- Updated
- 2024/03/01
- Product number
- 8.22040
- Product name
- N,N-Dimethyl-p-toluidine
- Purity
- for synthesis
- Packaging
- 250ML
- Price
- $68.2
- Updated
- 2024/03/01
- Product number
- 8.22040
- Product name
- N,N-Dimethyl-p-toluidine
- Purity
- for synthesis
- Packaging
- 1L
- Price
- $139
- Updated
- 2024/03/01
- Product number
- 41690
- Product name
- 4,N,N-Trimethylaniline
- Purity
- catalyst grade (for peroxide polymerization), ≥98.5% (GC)
- Packaging
- 100ml
- Price
- $61.8
- Updated
- 2024/03/01
- Product number
- 41690
- Product name
- 4,N,N-Trimethylaniline
- Purity
- catalyst grade (for peroxide polymerization), ≥98.5% (GC)
- Packaging
- 500ml
- Price
- $142
- Updated
- 2024/03/01
N,N-Dimethyl-p-toluidine Chemical Properties,Usage,Production
Chemical Properties
light yellow liquid
Uses
N,N-Dimethyl-4-toluidine is an amine accelerator for the polymerization of e.g. dental methacrylic restorative materials
Uses
N,N-Dimethyl-p-toluidine is used as a polymerization catalyst for polyesters, acrylate and epoxy resins. It is also used as a hardener for dental cements and in adhesives. It serves as an intermediate for photographic chemicals, in industrial glues, in artificial fingernail preparations, colorants, pharmaceuticals. It reacts with vinyl ether in the presence of copper(II) chloride gives tetrahydroquinolines. Further, it is used to accelerate polymerization of ethyl methacrylate.
Synthesis Reference(s)
Synthetic Communications, 19, p. 3051, 1989 DOI: 10.1080/00397918908052700
Tetrahedron Letters, 8, p. 1849, 1967
General Description
A clear colorless liquid with an aromatic odor. Density 0.937 g / cm3 (Lancaster) and insoluble in water. Hence floats on water. Toxic by skin absorption and inhalation. Flash point 181°F. May release toxic vapors when burned.
Air & Water Reactions
Tends to darken upon exposure to air. Insoluble in water.
Reactivity Profile
N,N-Dimethyl-p-toluidine 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. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides.
Health Hazard
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Synthesis
N,N-Dimethyl-p-toluidine was prepared by reacting p-toluidine with methanol and POCl3 in autoclave heated up to 280° C for 3h.
Purification Methods
Reflux for 3hours with 2 molar equivalents of Ac2O, then fractionally distil it under reduced pressure. Alternatively, dry it over BaO, distil and store it over KOH. The picrate has m 128o (from EtOH). Methods described for N,N-dimethylaniline are applicable here. [Beilstein 12 H 902, 12 III 2026, 12 IV 1874.]
N,N-Dimethyl-p-toluidine Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from N,N-Dimethyl-p-toluidine manufacturers
- Product
- N,N-Dimethyl-p-toluidine 99-97-8
- Price
- US $99.00-35.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20ton
- Release date
- 2024-05-14
- Product
- N,N,4-Trimethylbenzenamine 99-97-8
- Price
- US $60.00/kg
- Min. Order
- 1kg
- Purity
- 99
- Supply Ability
- 5000
- Release date
- 2024-05-16
- Product
- N,N-Dimethyl-4-toluidin 99-97-8
- Price
- US $70.00/kg
- Min. Order
- 1kg
- Purity
- 99
- Supply Ability
- 5000
- Release date
- 2024-06-03