N,N-二甲基乙酰胺

Description

N,N-Dimethylacetamide · CAS 127-19-5 · C4H9NO. UNII JCV5VDB3HY. Boiling Point: 329 to 331 °F at 760 mmHg (NTP, 1992); Boiling Point: 331 °F at 760 mmHg (USCG, 1999); Boiling Point: 163-165 °C.

Identification

CAS Registry Number	127-19-5
PubChem CID	31374
Molecular formula	C4H9NO
IUPAC name	N,N-dimethylacetamide
UNII (FDA)	JCV5VDB3HY

Computed Descriptors

Molecular Weight	87.12
XLogP3	-0.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	87.068413911
Monoisotopic Mass	87.068413911
Topological Polar Surface Area	20.3
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	329 to 331 °F at 760 mmHg (NTP, 1992)
Boiling Point	331 °F at 760 mmHg (USCG, 1999)
Boiling Point	163-165 °C
Boiling Point	165 °C
Boiling Point	329 °F
Boiling Point	165 °C @760 [mm Hg]
Melting Point	-4 °F (NTP, 1992)
Melting Point	-4 °F (USCG, 1999)
Melting Point	-18.59 °C
Melting Point	-20 °C

Physical description & handling notes

• Dimethylacetamide appears as 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.
• N,n-dimethyl acetamide solution (40% or less) is a colorless liquid with a slight ammonia-like odor. (USCG, 1999)
• Wet Solid; CBI; Liquid
• Colorless liquid with a weak, ammonia- or fish-like odor; [NIOSH]
• OILY COLOURLESS LIQUID WITH PUNGENT ODOUR.
• Colorless liquid with a weak, ammonia- or fish-like odor.

GHS Hazard Classification

Reported hazard statements	H312, H332, H319 (35.5%), H360 (91.5%), H227, H331, H336, H350

Documented Uses

• Used as a solvent for many organic reactions, resins, polymers, crystallization, and purification. [ACGIH] Used as a solvent in plastics, resins, and gums; Also used as a catalyst and paint remover; [Hawley] Used in synthetic fiber and resin industries; Used as a solvent in elastane fiber factories; [Reference #1]
• Semiconductor Manufacturing [Category: Industry]
• Plastic Composites Manufacturing [Category: Industry]
• Solvent in industrial applications
• Solvent for plastics, resins, gums, and electrolytes; catalyst; paint remover; high-purity solvent for crystallization and purification
• N,N-Dimethylacetamide is used to dissolve polyacrylonitrile, polyvinyl chloride, polyamides, polyimides, cellulose derivatives, styrenes, and linear polyesters; manufacturing of films and fibers; booster solvent in coatings and adhesives formulations.

Synonyms

N,N-DIMETHYLACETAMIDE; 127-19-5; Dimethylacetamide; Acetamide, N,N-dimethyl-; Acetdimethylamide; DMAc; Dimethyl acetamide; N,N-Dimethyl acetamide; Dimethylamide acetate; N,N-Dimethylethanamide; Dimethylacetone amide; Acetic acid, dimethylamide; Acetyldimethylamine; NSC 3138; Acetic acid dimethylamide; CBC 510337

Frequently Asked Questions

What are the CAS number and molecular formula of N,N-Dimethylacetamide?

CAS 127-19-5; molecular formula C4H9NO; molecular weight — g/mol.

What other names is N,N-Dimethylacetamide known by?

N,N-DIMETHYLACETAMIDE, 127-19-5, Dimethylacetamide, Acetamide, N,N-dimethyl-, Acetdimethylamide, DMAc.

Is N,N-Dimethylacetamide classified as hazardous?

Hazard statements reported: H312, H332, H319, H360, H227.

What are the key physical properties of N,N-Dimethylacetamide?

Boiling Point: 329 to 331 °F at 760 mmHg (NTP, 1992); Boiling Point: 331 °F at 760 mmHg (USCG, 1999); Boiling Point: 163-165 °C; Boiling Point: 165 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.