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Basic Identification Information OF N,N-Dimethylacetamide DMAC 99.9% CAS 127-19-5

CAS No.: 127-19-5

Standard Name: N,N-dimethylacetamide, abbreviated as DMAC

EC No.: 204-826-4

Molecular formula: C4H9NO

Molecular weight: 87.12

Customs Code: 2924199090 (Organic solvents of the amide type without rings)

Physical and Chemical Properties

- Appearance and Odor: Colorless, transparent oily liquid with a faint ammonia odor, flammable

- Dissolution properties: A universal polar solvent that is miscible with water, alcohols, ethers, esters, benzene, chloroform, and aromatic hydrocarbons in any ratio, exhibiting exceptional solvency for high-molecular-weight resins and polymers

- Key boiling point melting point: Melting point: -20°C; Boiling point at atmospheric pressure: 164.5~166°C; Thermal stability is superior to DMF (dimethylformamide), and it is not easily decomposed during high-temperature distillation

- Density / Flash Point: Density at 25°C: 0.937 g/mL; Open Cup Flash Point: 70°C; Autoignition Temperature: 490°C

- chemical stability: Stable in neutral or weakly acidic/alkaline environments; slowly hydrolyzed under heating in strong acids or bases; belongs to non-protonic polar solvents, commonly used as reaction media and catalyst supports in organic synthesis

Specification

Appearance                               Colorless clear liquid

Assay, %                                   99.90

Color ( Hazen) (Pt-Co)               10

Moisture, mg/kg                        200

Iron, mg/kg                               0.050

Acidity (as acetic acid) mg/kg     50.0

Bacisity(as DMA) mg/kg              3.0

Conductivity (25 C) us/cm           0.10

Core Industrial Applications (Mainstream Scenarios in Chemical Foreign Trade)  

1) Chemical Fiber / Polymer Industry (Highest Usage)

Specialty solvents for spandex (polyurethane) and acrylic fiber spinning; solvents for the synthesis of polyimide and polyamide resins

High-performance film, lithium battery separator, aramid fiber production and processing solvent

2) Solvents for extraction/chemical reactions in the synthesis of pharmaceuticals, pesticides, antibiotics, anticancer drugs, and pesticides; high-purity grade for the production of active pharmaceutical ingredients in the pharmaceutical industry.  

3) Chemical separation and fine chemicals

Specialized Solvent for Styrene Extraction and Separation from C8 Aromatics Fraction

Organic Synthesis Cyclization, Halogenation, Cyanation, Alkylation Reaction Catalysts / Solvents

High-purity DMAC in the electronics industry is used for precision cleaning of chips and circuit boards

4) Other Supporting Uses

Paint Stripping Agent, Electroplating Electrolyte, Dye Dissolving Medium, Leather Additive  

Safety, Storage, Transportation, and Hazardous Chemical Information

Hazard Class: Class 6.1 Toxic Liquid, Reproductive Toxic Chemical Substance

Hazards: Toxicity via inhalation and dermal absorption; may harm fetus (reproductive toxicity); irritates eyes, respiratory tract, and skin; prolonged exposure damages liver and kidneys

Protection: Conduct enclosed operations with ventilation, wear a toxic gas mask, solvent-resistant gloves, and safety goggles; strictly avoid prolonged skin contact

Packing, Storage and transportation requirements

Sealed iron drum (190kg/drum, 80 drums per 20feet FCL) or as per request.

Store in a cool, ventilated warehouse, away from open flames, heat sources, and oxidizers; do not mix with strong acids or alkalis;

MSDS must be provided during transportation, and declare as hazardous chemicals for toxic liquids

Degradation Characteristics: Wastewater must not be discharged directly without treatment and requires biochemical processing

Differentiation Between Similar Solvents: DMAC (127-19-5) vs DMF (Dimethylformamide)

DMAC has a higher boiling point and better thermal stability, making it less prone to decomposition during high-temperature processing

DMAC is slightly less toxic than DMF and is preferentially used in high-end chemical fiber and pharmaceutical industries

The price is higher than DMF, primarily used in high-end polymers and pharmaceutical fields