Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Questions And Answer Spectrum Detail Well-known Reagent Company Product Information
WebSite >  CAS DataBase List  > 127-19-5


Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Questions And Answer Spectrum Detail Well-known Reagent Company Product Information

Product Image


CBC 510337
Dimethylamid kyseliny octove
Dimethylamide acetate
NSC 3138
SK 7176
Acetic acid dimethylacetamide
Molecular Formula
MDL Number
Molecular Weight
MOL File

Chemical Properties

colourless liquid with a faint ammonia odour
-20 °C
Melting point 
-20 °C (lit.)
Boiling point 
164.5-166 °C (lit.)
164.5-166 °C(lit.)
0.937 g/mL at 25 °C(lit.)
vapor density 
3.89 (vs air)

vapor pressure 
40 mm Hg ( 19.4 °C)

refractive index 
n20/D 1.439(lit.)

158 °F
storage temp. 
>1000g/l soluble
Colorless to yellowish
Stable. Combustible. Incompatible with strong oxidizing agents.
Relative polarity
Faint ammonia odor
4 (200g/l, H2O, 20℃)
PH Range
4 at 200 g/l at 20 °C
Odor Threshold
explosive limit
Water Solubility 
λ: 270 nm Amax: 1.00
λ: 280 nm Amax: 0.30
λ: 290 nm Amax: 0.15
λ: 310 nm Amax: 0.05
λ: 320 nm Amax: 0.03
λ: 360-400 nm Amax: 0.01
Exposure limits
NIOSH REL: TWA 10 ppm (35 mg/m3), IDLH 300 ppm; OSHA PEL: TWA 10 ppm; ACGIH TLV: TWA 10 ppm (adopted).
CAS DataBase Reference
127-19-5(CAS DataBase Reference)
NIST Chemistry Reference
Acetamide, N,N-dimethyl-(127-19-5)
2B (Vol. 123) 2020
EPA Substance Registry System
127-19-5(EPA Substance)

Safety Data

Hazard Codes 
Risk Statements 
R11:Highly Flammable.
R20/22:Harmful by inhalation and if swallowed .
R61:May cause harm to the unborn child.
R20/21:Harmful by inhalation and in contact with skin .
R36:Irritating to the eyes.
Safety Statements 
S16:Keep away from sources of ignition-No smoking .
S24:Avoid contact with skin .
S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36:Wear suitable protective clothing .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
WGK Germany 


Autoignition Temperature
914 °F
HS Code 

Safety Profile
Moderately toxic by skin contact, inhalation, intravenous, and intraperitoneal routes. Mildly toxic by ingestion. Experimental teratogenic and reproductive effects. A skin and eye irritant. Less toxic than dimethylformamide. Mutation data reported. Combustible when exposed to heat and flame. A moderate explosion hazard. Violent reaction with halogenated compounds (e.g., carbon tetrachloride, hexachlorocyclohexane) when heated above 9OOC. Iron powder catalyzes the reaction so that it initiates at 71OC. When heated to decomposition it emits toxic fumes of NOx
Hazardous Substances Data
127-19-5(Hazardous Substances Data)
LD50 orally in rats: 5.4 ml/kg (Bartsch)

Raw materials And Preparation Products

Hazard Information

General Description
A clear colorless liquid with a faint odor similar to ammonia. About the same density as water. Flash point 145°F. Vapors heavier than air. May by toxic by skin absorption. May irritate eyes and skin.
Reactivity Profile
DIMETHYLACETAMIDE(127-19-5) is an amide. Incompatible with oxidizing agents and halogenated compounds. Exothermic reactions occur with carbon tetrachloride and hexachlorocyclohexane. DIMETHYLACETAMIDE(127-19-5) can react violently in the presence of iron. Special Hazards of Combustion Products: Emits carbon oxides, nitrogen oxides, and dimethylamine when heated to decomposition.
Air & Water Reactions
Water soluble.
Health Hazard
Liquid causes mild irritation of eyes and skin. Ingestion causes depression, lethargy, confusion and disorientation, visual and auditory hallucinations, perceptual distortions, delusions, emotional detachment, and affective blunting.
Fire Hazard
This chemical is combustible.
Dimethylacetamide (DMAC) is a synthetic organic compound that is produced from a reaction of dimethylamine and acetic acid or acetic anhydride. It is a colorless to yellow liquid with a faint odor resembling ammonia. DMAC has similar density to water and is miscible with water and organic substances. This organic compound is commonly associated with many industrial uses, either as a starting material or an intermediate. DMAC is a good solvent that is used in polymer dissolution, especially in the fiber industry. Historically, DMAC was also tested as a possible antineoplastic agent in a phase 1 study involving 17 patients. However, liver and central nervous system (CNS) toxicity associated with DMAC was observed and these patients had altered mental states, resulting in no further drug development.
Physical properties
Clear, colorless liquid with a weak, ammonia-like odor. Odor threshold concentration is 46.8 ppmv (Leonardos et al., 1969).
ChEBI: A member of the class of acetamides that is acetamide in which the hydrogens attached to the N atom have been replaced by two methyl groups respectively. Metabolite observed in cancer metabolism.
Production Methods
Dimethylacetamide is manufactured from acetic acid and dimethylamine in a closed system.
Pharmaceutical Applications
Dimethylacetamide is used as a solvent in oral and injectable pharmaceutical formulations. It has been used as a cosolvent to solubilize poorly soluble drugs. The use of dimethylacetamide has also been investigated as a vehicle for the parenteral delivery of relatively small peptides.
The use of solvents such as dimethylacetamide has been shown to influence the size and rate of release of norfloxacin from nanoparticles.
Dimethylacetamide has also been used in topical formulations and has been evaluated as a permeation enhancer for transdermal drug delivery.
Industrial uses
Dimethylacetamide is a powerful industrial solvent, the uses of which are very similar to those of dimethylformamide (Siegle, 1980). Its strong solvent action renders it particularly useful in the manufacture of films and fibers and as a solvent for polyacrylonitrile, polyvinyl chloride, polyamides, cellulose derivatives and polystyrenes and in coatings and adhesive formulations. Dimethylacetamide dissolves many inorganic salts.
Dimethylacetamide is used in pharmaceutical preparations as a solvent in parenteral formulations and is generally regarded as a nontoxic material when used as an excipient. Animal toxicity studies indicate that dimethylacetamide is readily absorbed into the bloodstream following inhalation or topical application. Repeated exposure to dimethylacetamide may be harmful and can result in liver damage. High intravenous doses (>400mg/kg/day for 3 days) may be hallucinogenic.
LD50 (rabbit, SC): 9.6g/kg(11) LD50 (rat, IP): 2.75g/kg LD50 (rat, IV): 2.64g/kg LD50 (rat, oral): 4.93g/kg LD50 (mouse, inhalation): 7.2g/kg LD50 (mouse, IP): 2.8g/kg
DMAC was not carcinogenic in rats administered 100, 300, or 1000 mg/kg/day in drinking water for 2 years. Rats and mice were exposed by inhalation to 0, 25, 100, or 350 ppm DMAC for 6 h/day, 5 days/week for 18 months (mice) or 2 years (rats). DMAC was not oncogenic under these conditions in either the rat or the mouse.
Environmental Fate
Chemical/Physical. Releases toxic fumes of nitrogen oxides when heated to decomposition (Sax and Lewis, 1987).
Gas Chromatographie analysis of the urine of rats which had received dimethylacetamide by the subcutaneous route indicated the presence of N-methyl-acetamide and acetamide (Barnes and Ranta, 1972). Both metabolites were also found by the same authors in incubation mixtures of dimethylacetamide with rat liver homogenate. N-Methylacetamide was detected in the urine of human volunteers who had inhaled dimethylacetamide or absorbed dimethylacetamide vapor through the skin (Maxfield et al 1975). Measurement of the amount of the metabolite N-methylacetamide excreted by individuals exposed to dimethylacetamide vapors with or without face masks which allowed the inhalation of air free of dimethylacetamide indicated that more dimethylacetamide was absorbed through the lungs than through the skin. Interestingly, in this study, only 2-10% of the amount of dimethylacetamide inhaled was recovered in the urine in the form of N-methylacetamide. It has been suggested that the major urinary metabolite of the analogous dimethylformamide is N-(hydroxymethyl)-N-methylformamide and not N-methylformamide, since the carbinolamide decomposes on the gas chroma-tography column (to N-methylformamide) but is relatively stable in aqueous solution (Kestell et al 1986). In analogy, it would be logical to assume that the N-methylacetamide found in the urine after exposure to dimethylacetamide really arose from chemical breakdown of N-(hydroxymethyl)-N-methylacetamide during the analytical process. This contention, however, remains to be proven.
Dimethylacetamide should be stored in an airtight container, protected from light, in a cool, dry place. Dimethylacetamide has an almost unlimited shelf-life when kept in closed containers and under nitrogen. It is combustible.
Purification Methods
Shake the amide with BaO for several days, reflux it with BaO for 1hour, then fractionally distil it under reduced pressure. Store it over molecular sieves. [Beilstein 4 IV 180.]
Toxicity evaluation
Little data on the metabolism of DMAC are available in the literature. Hepatotoxicity of DMAC is believed to be metabolism dependent. From its metabolic activation (by cytochrome P450s and probably CYP2E1), reactive species and free radical metabolites are produced and readily attack the heme prosthetic group of the liver, leading to suicidal hepatic enzyme inactivation.
Dimethylacetamide is incompatible with carbon tetrachloride, oxidizing agents, halogenated compounds, and iron. It attacks plastic and rubber. Contact with strong oxidizers may cause fire.
Regulatory Status
Included in the FDA Inactive Ingredients Database (IM injections, IV injections and infusions). Included in parenteral medicines licensed in the UK.

Material Safety Data Sheet(MSDS)

Questions And Answer

N,N-Dimethylacetamide is a highly polar aprotic solvent, micro ammonia odor, very strong dissolving power, soluble wide, miscible with water, aromatics, esters, ketones, alcohols, ether, benzene and chloroform and other arbitrary and enable activation of molecular compounds. It is widely used as a solvent and a catalyst. The solvent, with high boiling point, flash point, thermal stability and chemical stability of the solvent, is used for polyacrylonitrile spinning solvent, synthetic resin and natural resins, formic acid vinyl ester resin, vinyl pyridine copolymer and aromatic carboxylic acid. The catalyst can be used in the process of urea heating to produce the reaction of cyanide, sodium halide and metal cyanide to produce the reaction of alkyl acetylene, organic halide and isocyanate. N,N-dimethylacetamide also can be used as electrolytic solvent and photography with coupler solvent, de paint agent, organic synthesis of raw materials, pesticide and pharmaceutical raw materials. Separation of styrene from C8 fraction, extraction, distillation, solvent, etc.
Chemical Properties
Transparent colorless liquid. The organic solvent can be mixed with any water, alcohol, ether, ester, benzene, chloroform, and aromatic compounds.
  • N,N-Dimethylacetamide (DMAC) is mainly used as synthetic fibers (acrylonitrile) and polyurethane spinning synthetic polyamide resin and a solvent, but also it is used for separating styrene from the C8 fraction extractive distillation solvent, and it is widely used in the aspects of polymer films, coatings and medicine. Currently it is used to synthesize a large number of antibiotics and pesticides in the pharmaceutical and pesticide. The catalyst can also be used for the reaction, electrolytic solvent, paint scavengers and various crystalline solvent adducts and complexes.
  • Used as the reaction solvent of pharmaceutical synthesis, synthetic fiber spinning solvents and synthetic resins, photographic chemicals chromogenic agent solvents, paints and other solvents, catalyst.

Medical Care
When the pre-employment and periodic medical examinations, we should pay special attention to the skin, the central nervous system, liver disease or liver function tests.
Test methods
Measured in the air: adsorption with silica, methanol and analyzed by gas chromatography.
Transport requirements
N,N-dimethylacetamide Department are toxic flammable liquids, adjustment shall be toxic substances provides storage and transportation. Transportation shall be marked "dangerous drugs" mark, and prevent the sun, impact, when handling, attention gently on the container.
Recommended methods of controlling waste incineration (incinerators shall have a scrubber or thermal means to reduce the discharge of NOx).
Production method
Dimethylacetamide has been produced by the reaction of acetic acid with dimethylamine (Siegle, 1980).

Spectrum Detail

Well-known Reagent Company Product Information