CAS 127-19-5 corresponds to N, N-dimethylacetamide (DMAC/DMA), which is a non proton highly polar organic solvent with the molecular formula C ₄ H ₉ NO and a molecular weight of 87.12. It is widely used in synthetic fiber spinning, drug synthesis, and organic reaction solvents.

Core Basic Information
-Chinese name: N, N-dimethylacetamide (alias: dimethylacetamide, acetyldimethylamine)
-English name: N, N-Dimethylacetamide (DMAC, DMA)
-Molecular formula/molecular weight: C ₄ H ₉ NO/87.12 g/mol
-Appearance: Colorless, transparent, flammable liquid with a slight ammonia odor
-Key physical properties: Boiling point of about 165-166 ℃, density of 0.937 g/cm ³ (25 ℃), flash point of about 66-70 ℃, can be miscible with water and most organic solvents at will
-EC number: 204-826-4

Main application areas
1. Polymer industry: spinning solvents for polyacrylonitrile (PAN), polyurethane, and polyamide resins; Extraction distillation solvent for separating styrene from C8 fraction
2. Medicine and pesticides: efficient solvents for synthesizing antibiotics, insecticides, and drug reactions
3. Organic synthesis: As a non proton polar solvent, it participates in acylation, cyanide, isocyanate synthesis and other reactions, and also serves as a catalyst or electrolytic solvent
4. Other uses: coating solvents, paint removers, photosensitive material colorants, solvents, and complex crystallization media

Safety and Toxicity Warning
-Hazard classification: Inhalation or transdermal absorption toxic (acute toxicity Cat. 4), irritating to eyes/skin, reproductive toxicity Cat. 1B (may harm the fetus), IARC classified as Group 2B carcinogen (may cause cancer to humans)
-Exposure limit: Occupational exposure limit TWA 10 ppm (35 mg/m ³)
-Health risks: Long term exposure can cause liver damage and jaundice; High dose intake may cause central nervous system suppression and teratogenic effects
-Protection requirements: Closed operation, forced ventilation, wearing gas masks, anti-seepage gloves, and goggles; Avoid contact with incompatible substances such as strong oxidants and carbon tetrachloride

This chemical is a toxic and flammable liquid. It should be stored in a cool and ventilated place, away from sources of fire, and transported in accordance with hazardous materials regulations.

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CAS 127-19-5 | N,N-Dimethylacetamide (DMAC 99.9%)
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