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Acrylamide (or acrylic amide) is an organic compound with the chemical formula CH 2 =CHC(O)NH 2. It is a white odorless solid, soluble in water and several organic solvents. From the chemistry perspective, acrylamide is a vinyl-substituted primary amide (CONH 2 ).
Polyacrylamide is of low toxicity but its precursor acrylamide is a neurotoxin and carcinogen. [1] Thus, concerns naturally center on the possibility that polyacrylamide is contaminated with acrylamide. [12] [13] Considerable effort is made to scavenge traces of acrylamide from the polymer intended for use near food. [1]
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Using acrylamide and paraformaldehyde in 1,2-dichloroethane gives a clear solution upon heating, from which MBA crystallizes. In aqueous media, acrylonitrile also reacts with formaldehyde to give crude N , N ′-methylenebisacrylamide, which can be purified by recrystallization with acetone/water.
Methyl acrylate is an organic compound, more accurately the methyl ester of acrylic acid.It is a colourless liquid with a characteristic acrid odor. It is mainly produced to make acrylate fiber, which is used to weave synthetic carpets. [6]
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Polyacrylic acid is a weak anionic polyelectrolyte, whose degree of ionisation is dependent on solution pH. In its non-ionised form at low pHs, PAA may associate with various non-ionic polymers (such as polyethylene oxide, poly-N-vinyl pyrrolidone, polyacrylamide, and some cellulose ethers) and form hydrogen-bonded interpolymer complexes. [17]
The Vietnamese Wikipedia initially went online in November 2002, with a front page and an article about the Internet Society.The project received little attention and did not begin to receive significant contributions until it was "restarted" in October 2003 [3] and the newer, Unicode-capable MediaWiki software was installed soon after.