Polypropylene glycol Chemische Eigenschaften,Einsatz,Produktion Methoden
S-S?tze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Polypropylene glycol is a transparent, colorless to light yellow viscous liquid. It is classified into three types based on its average molecular weight: 425, 1025, and 2025. It is non-volatile and non-corrosive. The lower molecular weight polymer is soluble in water, while the higher molecular weight variants are only slightly soluble in water but are soluble in oils, many hydrocarbons, aliphatic alcohols, ketones, esters, and similar solvents. The hydroxyl groups at both ends of the molecule can undergo esterification to form monoesters or diesters. The monoesters function as non-ionic surfactants. Polypropylene glycol can also react with alcohols to form ethers. Additionally, it serves as a solvent for vegetable oils, resins, and paraffin.
Verwenden
Hydraulic fluids, rubber lubricants, antifoam
agents, intermediates in urethane foams, adhesives,
coatings, elastomers, plasticizers, paint formula-
tions, laboratory reagent.
Definition
ChEBI: Poly(propylene glycol) is a macromolecule composed of repeating propyleneoxy units. It is a hydroxypolyether and a poly(ether) macromolecule.
Allgemeine Beschreibung
Colorless liquid that is odorless or has a mild sweet odor. May float or sink in water.
Reaktivit?t anzeigen
Poly(propylene glycol) is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.
Health Hazard
The compound has a very low toxicity; few, if any, symptoms will be observed. Contact of liquid with eyes causes slight transient pain and irritation similar to that caused by a mild soap.
Sicherheitsprofil
Poison by
intraperitoneal and intravenous routes.When heated to decomposition it emits
acrid smoke and irritating fumes.
Polypropylene glycol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte