Consumers seeking the best titanium dioxide products are turning towards brands that prioritize sustainability
Intraocularly, hpmc is used as a volume substitute for the aqueous humor to maintain anterior segment integrity and anatomical spaces during intraocular interventions, to protect intraocular tissues (i.e. the corneal endothelium), to sustain corneal transparency as well as for the lubrication of intraocular lenses (IOL) and surgical instruments.
HPMC is extensively used in various construction materials, such as cement-based mortars, gypsum-based plasters, tile adhesives, and self-leveling compounds. Its water retention and thickening properties are particularly valuable in these applications.
The rheological properties of HPMC gel make it suitable for use in self-leveling compounds, ensuring uniform and smooth surfaces in flooring applications.
Cellulose wird in heißer Natronlauge gequollen und bei 50 bis 80 °C mit Propylenoxid und hohem Methylchlorid-Druck umgesetzt; Letzteres reagiert erst bei hoher Temperatur. Typische Nebenprodukte von Polykondensationen und Hydrolyse des Propylenoxids sind Propylenglycol, Di- und Tripropylenglykol sowie neben Methanol auch deren Methylether (z. B. Methoxypropanol, Dipropylenglycolmonomethylether usw.). Zur Isolierung werden zuerst alle bis 110 °C flüchtigen Stoffe abdestilliert und anschließend mit heißem Wasser alle Glycole und Salze ausgewaschen, der Feststoff getrocknet und zum Pulver vermahlen. Für den Lebensmittel- und Pharmabereich ist die Herstellung unter GMP-Bedingungen vorgeschrieben.

hydroxyethyl cellulose thickener. It helps to improve the flow properties of these formulations, making them easier to dispense and administer. HEC is also compatible with a wide range of active ingredients, making it a versatile and widely used excipient in pharmaceutical products.


Hydroxypropyl methylcellulose (HPMC) is considered safe for use in supplements based on extensive regulatory approvals and toxicology studies. It has been shown to have low toxicity, with no evidence of genotoxicity or carcinogenicity in animal studies. Although some people may experience mild gastrointestinal side effects, these are usually short-lived and not serious. However, as with any supplement, products containing HPMC must be used as directed and consult a healthcare professional if you have any concerns or underlying medical conditions. Overall, if used appropriately, HPMC can be a safe and effective ingredient in dietary supplements.


In conclusion, based on a limited data set, the chronic toxicity studies revealed growth retardation for some modified celluloses mostly at the highest dosage level. There was no indication for carcinogenic effects for all tested compounds.