Sodium acrylate
| Structural formula | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||
| General | ||||||||||||||||
| Surname | Sodium acrylate | |||||||||||||||
| other names |
Sodium salt of acrylic acid |
|||||||||||||||
| Molecular formula | C 3 H 3 NaO 2 | |||||||||||||||
| Brief description |
white solid |
|||||||||||||||
| External identifiers / databases | ||||||||||||||||
|
||||||||||||||||
| properties | ||||||||||||||||
| Molar mass | 94.04 g mol −1 | |||||||||||||||
| Physical state |
firmly |
|||||||||||||||
| density |
1.45 g cm −3 |
|||||||||||||||
| Melting point |
> 300 ° C |
|||||||||||||||
| solubility |
easily soluble in water (1000 g l −1 at 25 ° C) |
|||||||||||||||
| safety instructions | ||||||||||||||||
|
||||||||||||||||
| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||||||||
Sodium acrylate is a chemical substance belonging to the group of acrylates . It is made from acrylic acid and caustic soda . Sodium acrylate is mainly used as a raw material for the production of polymers .
Extraction and presentation
Acrylic acid is neutralized with a sodium base (e.g. sodium hydroxide solution ), usually in an aqueous or alcoholic solution. The solvent is then gently removed.
properties
Physical Properties
Sodium acrylate is a white, crystalline powder that is readily soluble in water.
use
Sodium acrylate is used as a monomer in mostly aqueous polymerizations . It is used, among other things, for the production of superabsorbents , wallpaper paste and paints .
safety instructions
Sodium acrylate is classified in water hazard class 2 according to appendix 3 of the administrative regulation for water polluting substances (VwVwS) .
proof
Sodium acrylate can be detected using high performance liquid chromatography on reversed phase columns.
Individual evidence
- ↑ a b c d e f g h Entry on sodium acrylate in the GESTIS substance database of the IFA , accessed on August 4, 2013(JavaScript required) .
- ↑ Sodium acrylate data sheet , 97% from Sigma-Aldrich , accessed on August 5, 2013 ( PDF ).
- ↑ Patent CN102180784 : "Synthesis method of sodium acrylates". Published on September 14, 2011 .
- ↑ patent GB1073856 : "Production of sodium acrylates". Published June 28, 1967 .
- ↑ Patent EP1527109 : "METHOD FOR THE PRODUCTION OF POLYMERS".
- ↑ Frederic L. Buchholz, Andrew T. Graham (Ed.): Modern Superabsorbent Polymer Technology . Wiley-VCH, New York 1998 ISBN 0-471-19411-5 (English).
- ↑ Patent EP0396304 : "Wallpaper adhesives". Published November 7, 1990 , Inventor: Yeung Dominic Wai Kwing.
- ↑ entry to SODIUM ACRYLATE in the Hazardous Substances Data Bank , accessed on August 14, 2013.