Polyacrylamide

Bezeichnung:Polyacrylamide

CAS-Nr9003-05-8

Englisch Name:Polyacrylamide

CBNumberCB7390058

Summenformel(C3H5NO)x

Molgewicht71.08

MOL-Datei9003-05-8.mol

Polyacrylamide physikalisch-chemischer Eigenschaften

Schmelzpunkt	>300 °C
Dichte	1.189 g/mL at 25 °C
Brechungsindex	n20/D 1.452
Flammpunkt	>230 °F
storage temp.	2-8°C
Löslichkeit	Water
Aggregatzustand	Granules
Farbe	White to faintly yellow
Geruch (Odor)	odorless
Wasserlöslichkeit	SOLUBLE
Stabilität	Stable. Incompatible with strong oxidizing agents, aluminium, copper, iron, iron salts
EPA chemische Informationen	Polyacrylamide (9003-05-8)

Sicherheit

Kennzeichnung gefährlicher	T
R-Sätze:	45-21/22-36/37/38-42/43
S-Sätze:	24/25-45-36/37/39-23-53
WGK Germany	1
RTECS-Nr.	AS3700000
HS Code	39069010
Giftige Stoffe Daten	9003-05-8(Hazardous Substances Data)
Toxizität	LD50 oral in rabbit: 11250mg/kg

Gefahreninformationscode (GHS)

Polyacrylamide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R45:Kann Krebs erzeugen.
R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R42/43:Sensibilisierung durch Einatmen und Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
Chemische Eigenschaften
white to faintly yellow granules
Verwenden
Binding agent, dispersing aid, lubricant, drag reduction and crystal formation control.
Verwenden
polyacrylamide is a binder, film former, and fixative with greater use in hair and nail than in skin care preparations. It is used in some hand and body lotions and cleansing creams.
Verwenden
Polyacrylamide is a polymer formed from acrylamide subunits. Polyacrylamide has been extensively used in applications such as polyacrylamide gel electrophoresis.
Definition
ChEBI: A macromolecule composed of repeating 1-carbamoylethylene units.
Definition
polyacrylamide: A polymerformed from 2-propenamide(CH₂:CHCONH₂). Polyacrylamide gelsare made using a cross-linking agentto form three-dimensional matrices.They are used in gel electrophoresis.
synthetische
Polyacrylamide resembles poly(acrylic acid) and poly(methacrylic acid) in being water-soluble and, as with those polymers, it is mainly this property which results in some limited commercial utilization. Polyacrylamide is prepared by free radical polymerization, using techniques essentially similar to those described for poly(acrylic acid) and poly(methacrylic acid):

It may be noted that whereas this reaction gives a vinyl polymer, a different type of polymer is obtained when polymerization is initiated by a strong base. In this case, a polyamide (nylon 3) is formed. Active initiators for this type of polymerization include alkoxides (RO-) and reaction probably takes place according to the following scheme, which involves the rearrangement of a carbanion to a more stable amide anion:

Polyacrylamide is a hard, brittle material. It is readily soluble in cold water but solubility in organic compounds is generally very limited. The polymer undergoes reactions characteristic of the amide group; for example, alkaline hydrolysis introduces carboxylic groups and reaction with formaldehyde gives methylol groups.
Polyacrylamide has found use as a ftocculant in the processing of minerals and in water treatment. Copolymers of acrylamide and acrylic acid are used to increase the dry strength of paper.
Allgemeine Beschreibung
Intelligent Swelling/Collapsing copolymer that can be used as a temperature- and pH-sensitive material.
Biochem/physiol Actions
Polyacrylamide is a water-soluble polymer made up of acrylamide subunits. It increases the viscosity of water and facilitates the flocculation of particles present in water.

Properties and Applications

INDEX	Results
Appearance	White powder / Granular
Molecular Weight	5000000-30000000
Degree of Hydrolysis	6-45%
Solid Content	89% min
Dissolving Time	60 minutes max
Effective pH Range	5~14
Residual Monomer	0.1% max

Polyacrylamide Upstream-Materialien And Downstream Produkte

Polyacrylamide Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

9003-05-8, Polyacrylamide Verwandte Suche:

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