Methacrylamide

Structural formula
General
Surname	Methacrylamide
other names	Methacrylic acid amide; 2-methacrylamide; 2-methyl acrylamide; 2-methylpropenoic acid amide; MAA;
Molecular formula	C 4 H 7 NO
Brief description	white, odorless, flammable solid
External identifiers / databases
EC number	201-202-3
ECHA InfoCard	100.001.094
PubChem	6595
Wikidata	Q1549805
properties
Molar mass	85.11 g mol −1
Physical state	firmly
density	1.10-1.12 g cm -3
Melting point	106-109 ° C
boiling point	215 ° C
solubility	good in water (202 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 302-319-335-371-373
	P: 260-264-270-271
Toxicological data	459 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Methacrylamide is a chemical compound from the group of amides , which is mainly used as a monomer for the production of polymers or copolymers .

Extraction and presentation

Methacrylamide can be prepared by reacting acetone cyanohydrin with sulfuric acid .

properties

Methacrylamide is a flammable, light-sensitive white odorless solid that is easily soluble in water. It decomposes from a temperature above 106–109 ° C, producing nitrous gases . It has a heat of vaporization of 73.7 kJ / mol (under pressure) and a heat of polymerization of 56.1 kJ / mol.

use

Methacrylamide is used as a monomer for the production of polymers ( acrylic granules , e.g. for thermosetting paints and self-crosslinking dispersions ) and for the production of methyl methacrylate .

Risk assessment

In 2015, methacrylamide was included in the EU's ongoing action plan ( CoRAP ) in accordance with Regulation (EC) No. 1907/2006 (REACH) as part of substance evaluation . The effects of the substance on human health and the environment are re-evaluated and, if necessary, follow-up measures are initiated. Methacrylamide uptake was caused by worker exposure and other hazard-related concerns. The re-evaluation has been running since 2016 and is carried out by Sweden . In order to be able to reach a final assessment, further information was requested.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h Entry on methacrylamide in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .

↑ Methacrylamide data sheet (PDF) from Fisher Scientific , accessed on February 13, 2014.

↑ Entry on methacrylic acid ester. In: Römpp Online . Georg Thieme Verlag, accessed on September 23, 2014.

↑ Data sheet ( Memento from September 29, 2007 in the Internet Archive ) from Degussa .

↑ Community rolling action plan ( CoRAP ) of the European Chemicals Agency (ECHA): methacrylamide , accessed on March 26, 2019.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h Entry on methacrylamide in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .