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Cas Database |
| Name |
Dimethylamine |
EINECS | 204-697-4 |
| CAS No. | 124-40-3 | Density | 0.68 g/cm3 |
| PSA | 12.03000 | LogP | 0.22650 |
| Solubility | miscible with water | Melting Point |
-93 °C |
| Formula | C2H7N | Boiling Point | 6.1 °C at 760 mmHg |
| Molecular Weight | 45.0843 | Flash Point | 60°F |
| Transport Information | UN 2924 3/PG 2 | Appearance | colourless compressed liquefied gas |
| Safety | 3-16-26-29-36/37/39-45 | Risk Codes | 12-20-37/38-41-34-20/22-11-39/23/24/25 |
| Molecular Structure |
|
Hazard Symbols |
 F, Xn
|
| Synonyms |
N,N-Dimethylamine;N-Methylmethanamine;NSC 8650; |
Article Data | 604 |
Dimethylamine Synthetic route
| Conditions | Yield |
|---|---|
| With iron; nickel In water pH=6.3 - 9.2; Kinetics; Further Variations:; Reagents; Hydrogenation; | 100% |
| With isocyanate de chlorosulfonyle In diethyl ether for 10h; Ambient temperature; | 65% |
| With titanium(III) chloride; water |
- 85809-41-2
3-ethynyl-cyclohepta-1.3.5-triene
- 993-50-0
(dimethylamino)trimethyltin
A
- 286387-63-1
3-(trimethylstannylethynyl)-1,3,5-cycloheptatriene
B
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| In neat (no solvent) Me3SnNMe2 added to 3-ethynyl-1,3,5-cycloheptatriene, react. mixture stirred without a solvent for 5 min at ambient temp., Me2NH evapd.; Me2NH evapd., product isolated in quant. yield; | A 100% B n/a |
- 68-12-2, 33513-42-7
N,N-dimethyl-formamide
- 100-46-9
benzylamine
A
- 6343-54-0
N-benzylformamide
B
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| With 2,3-dihydrophthalazine-1,4-dione at 80 - 95℃; for 40h; | A 99% B n/a |
| With cerium(IV) oxide at 100℃; for 12h; Reagent/catalyst; |
| Conditions | Yield |
|---|---|
| With 2,3-dihydrophthalazine-1,4-dione at 80 - 95℃; for 40h; | A 98% B n/a |
- 39139-79-2
1-dimethylamino-2,4-dinitronaphthalene
- 75-04-7
ethylamine
A
- 27210-67-9
N-ethyl-2,4-dinitro-1-naphthylamine
B
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| In water at 30℃; for 2h; | A 98% B n/a |
- 107-10-8
propylamine
- 71240-22-7
2-(1H-benzoimidazol-2-yl)-3-dimethylamino-acrylic acid ethyl ester
A
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| at 40℃; for 0.5h; Irradiation; | A n/a B 98% |
- 33966-50-6
SEC-BUTYLAMINE
- 71240-22-7
2-(1H-benzoimidazol-2-yl)-3-dimethylamino-acrylic acid ethyl ester
A
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| at 60℃; for 0.5h; Irradiation; | A n/a B 98% |
| Conditions | Yield |
|---|---|
| With potassium hydroxide In water Inert atmosphere; | 98% |
| With potassium hydroxide In dichloromethane at -15 - -5℃; for 1h; | 90% |
| With potassium hydroxide Alkaline conditions; |
- 29882-02-8
N',N''-dicyclohexyl-N,N-dimethylguanidine
- 108-91-8
cyclohexylamine
A
- 4833-41-4
N,N',N''-tricyclohexylguanidine
B
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| With [ς:η1:η5-(OCH2)(Me2CH2)C2B9H9]Ti(NMe2) at 110 - 115℃; | A 98% B n/a |
- 71240-24-9
2-benzooxazol-2-yl-3-dimethylamino-acrylic acid ethyl ester
- 75-64-9
tert-butylamine
A
- 124-40-3
dimethyl amine
| Conditions | Yield |
|---|---|
| at 40℃; for 0.5h; Irradiation; | A n/a B 97% |
Dimethylamine Chemical Properties
IUPAC Name: N-Methylmethanamine
Synonyms of Dimethylamine (CAS NO.124-40-3): Dimethylamine (anhydrous) ; Methanamine, N-methyl- ; N,N-Dimethylamine ; N-Methylmethanamine ; Dimethylamine, in aqueous solution
CAS NO: 124-40-3
Molecular Formula: C2H7N
Molecular Weight: 45.08
Molecular Structure: 
EINECS: 204-697-4
H bond acceptors: 1
H bond donors: 1
Freely Rotating Bonds: 0
Polar Surface Area: 3.24 Å2
Vapor density: 1.55 (vs air)
Vapor pressure: 16.97 psi ( 55 °C)
Refractive index: n20/D 1.37
Density: 0.654
Melting Point: -93°C
Boiling Point: 7°C
Flash Point: 60 °F
Solubility: Miscible
Appearance: colourless compressed liquefied gas
Storage temp: Flammables area
Sensitive: Hygroscopic
Stability: Stable. Generally used as a solution in water at concentrations up to around 40%. Extremely flammable in the pure form. Incompatible with strong oxidizing agents.
Product Categories of Dimethylamine (CAS NO.124-40-3): Pharmaceutical Intermediates;Compressed and Liquefied GasesChemical Synthesis;Chemical Synthesis;Compressed and Liquefied Gases;C2 to C6Chemical Synthesis;Amines;Nitrogen Compounds;Organic Bases;Synthetic Reagents
Dimethylamine Uses
Dimethylamine (CAS NO.124-40-3) is a precursor to several industrially significant compounds. It is also raw material for dimefox and diphenhydramine.
Dimethylamine Production
Dimethylamine (CAS NO.124-40-3) is manufactured by the reaction of methanol with ammonla．
2CH3OH + NH3 → (CH3)2NH + 2H2O
Dimethylamine Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| guinea pig | LD50 | oral | 240mg/kg (240mg/kg) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: MUSCLE WEAKNESS GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH | Hygiene and Sanitation Vol. 32(6), Pg. 329, 1967. |
| mammal (species unspecified) | LC50 | inhalation | 3700mg/m3 (3700mg/m3) | Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. Vol. 14, Pg. 80, 1975. | |
| mouse | LC50 | inhalation | 4725ppm/2H (4725ppm) | American Industrial Hygiene Association Journal. Vol. 43, Pg. 411, 1982. | |
| mouse | LD50 | intraperitoneal | 736mg/kg (736mg/kg) | Yakugaku Zasshi. Journal of Pharmacy. Vol. 97, Pg. 1117, 1977. | |
| mouse | LD50 | oral | 316mg/kg (316mg/kg) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: MUSCLE WEAKNESS GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH | Hygiene and Sanitation Vol. 32(6), Pg. 329, 1967. |
| rabbit | LD50 | oral | 240mg/kg (240mg/kg) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: MUSCLE WEAKNESS GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH | Hygiene and Sanitation Vol. 32(6), Pg. 329, 1967. |
| rabbit | LDLo | intravenous | 4gm/kg (4000mg/kg) | "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989Vol. 11, Pg. 509, 1989. | |
| rat | LC50 | inhalation | 4540ppm/6H (4540ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE LUNGS, THORAX, OR RESPIRATION: DYSPNEA | American Industrial Hygiene Association Journal. Vol. 43, Pg. 411, 1982. |
| rat | LD50 | oral | 698mg/kg (698mg/kg) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: MUSCLE WEAKNESS GASTROINTESTINAL: ULCERATION OR BLEEDING FROM STOMACH | Hygiene and Sanitation Vol. 32(6), Pg. 329, 1967. |
Dimethylamine Consensus Reports
EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.
Dimethylamine Safety Profile
Safety Information of Dimethylamine (CAS NO.124-40-3):
Hazard Codes: 
F+,F
Xn
C
T
Risk Statements: 12-20-37/38-41-34-20/22-11-39/23/24/25
12: Extremely Flammable
20: Harmful by inhalation
37/38: Irritating to respiratory system and skin
41: Risk of serious damage to eyes
34: Causes burns
20/22: Harmful by inhalation and if swallowed
11: Highly Flammable
39/23/24/25: Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed
Safety Statements: 3-16-26-29-36/37/39-45
3: Keep in a cool place
16: Keep away from sources of ignition - No smoking
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
29: Do not empty into drains
36/37/39: Wear suitable protective clothing, gloves and eye/face protection
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
RIDADR: UN 2924 3/PG 2
WGK Germany: 2
F: 3
HazardClass: 3
PackingGroup: II
Poison by ingestion. Moderately toxic by inhalation and intravenous routes. Mutation data reported. An eye irritant. Corrosive to the eyes, skin, and mucous membranes. A flammable gas. When heated to decomposition it emits toxic fumes of NOx. Incompatible with acrylaldehyde, fluorine, and maleic anhydride
Dimethylamine Standards and Recommendations
OSHA PEL: TWA 10 ppm
ACGIH TLV: TWA 5 ppm; STEL 15 ppm; Not Classifiable as a Human Carcinogen
DFG MAK: 2 ppm (3.7 mg/m3)
DOT Classification: 2.1; Label: Flammable Gas (UN 1032); DOT Class: 3; Label: Flammable Liquid (UN 1160)
Dimethylamine Specification
Dimethylamine is a base, neutralizing acids in exothermic reactions, and a reducing agent. Dimethylamine is temperature sensitive. It reacts vigorously with mercury and chlorine. Besides, it also reacts violently with strong oxidizing agents and attacks copper and copper compounds. It still reacts with hypochlorites to give N-chloroamines, some of which are explosives when isolated.
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