Detail of "5202-78-8"

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CAS Number:
5202-78-8
Name:
Acetamide, N-ethenyl-
Molecular Structure:
Formula:
C₄H₇NO
Molecular Weight:
85.10448
Synonyms:
Acetamide,N-vinyl- (6CI,7CI,8CI);N-Vinylacetamide;NVA;Vinylacetamide;N-Ethenylacetamide;
EINECS:
225-989-8
Density:
0.89g/cm³
Melting Point:
51-54 °C(lit.)
Boiling Point:
207.7 °C at 760 mmHg
Flash Point:
103.6 °C
Hazard Symbols:
Xn
Risk Codes:
22-36/38
Safety:
26-36 Details

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Synthesis of N-vinylacetamide and preparation of some polymers and copolymers: Synthesis of N-vinylacetamide and preparation of some polymers and copolymers. Summerville, Richard H.; Stackman, Robert W. (Celanese Res. Co., Summit, NJ 07901, USA). Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 24(2), 12-13 (English) 1983. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) N-Vinylacetamide [5202-78-8] prepd. by an acetal exchange reaction between acetamide [60-35-5] and di-Me acetal (I) [534-15-6] followed by pyrolysis of the ether amide product at 580° requires less initiator for polymn. than the crude monomer prepd. by the Dawson process. The crude pyrolyzate from the acetal exchange route polymd. in tert-BuOH to give a homopolymer [28408-65-3] with inherent viscosity 1.5 which required high acid concns. and long reflux times (27 h) for hydrolysis. Copolymers of the crude monomer with vinyl acetate required milder conditions (0.1 N HCl, 5-8 h) for hydrolysis. N-Vinylpropionamide [40652-23-1], similarly prepd. from propionamide [79-05-0] and I, polymd. in tert-BuOH to give a homopolymer [90967-56-9] sol. in alcs. and water and acetone-alc. mixts.

Synthesis of N-vinylacetamide and preparation of some polymers and copolymers: Synthesis of N-vinylacetamide and preparation of some polymers and copolymers. Stackman, Robert W.; Summerville, Richard H. (Celanese Res. Co., Summit, NJ 07960, USA). Ind. Eng. Chem. Prod. Res. Dev., 24(2), 242-6 (English) 1985. CODEN: IEPRA6. ISSN: 0196-4321. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 23 The reaction of AcNH2 [60-35-5] with CH3CH(OMe)2 [534-15-6] gave AcNHCH(OMe)CH3 [55204-51-8], the pyrolysis of which gave N-vinylacetamide (I) [5202-78-8] in high yield and purity. N-Vinylpropionamide [40652-23-1] was prepd. by the same method. Polymn. of the crude pyrolyzate gave I polymer [28408-65-3] with inherent viscosity 1.5 dL/g. Various homopolymn. conditions are described. I polymer began to decomp. at 375° without melting, and could be cast from solvents to clear, brittle films. Hydrolysis gave poly(vinylamide). Polymg. I with vinyl acetate gave copolymers [80512-26-1] contg. more I than the monomer mixt. Copolymers contg. 375 mol% I had m.p. <100°.