Hydroxypropyl cellulose

Hydroxypropyl cellulose Struktur
9004-64-2
CAS-Nr.
9004-64-2
Englisch Name:
Hydroxypropyl cellulose
Synonyma:
HPC;hydroxypropyl;L-HPC;KLUCEL;Hyprolose;Low-Substituted Hydroxypropyl cellulose;Hydroxypropyl cellulose - Average MW 80,000;Hydroxypropyl cellulose - Average MW 370,000;Hydroxypropyl cellulose - Average MW 1,000,000;Hydroxypropyl cellulose - Average MW 50,000 - 1250,000
CBNumber:
CB0241870
Summenformel:
C3H7O*
Molgewicht:
59.08708
MOL-Datei:
9004-64-2.mol

Hydroxypropyl cellulose Eigenschaften

Schmelzpunkt:
371.06 °C
Dichte
0.5 g/mL at 25 °C (lit.)
Brechungsindex
1.5600
storage temp. 
Room Temperature
Löslichkeit
polar oganic solvents: soluble
Aggregatzustand
powder
Farbe
White to light cream
Säure-Base-Indikators(pH-Indikatoren)
5.0 - 8.5
PH
pH (20g/l, 25℃) : 5.0~7.5
Geruch (Odor)
at 100.00?%. odorless
Wasserlöslichkeit
Soluble in polar organic solvents, in water at room temperature.Soluble in water, methyl alcohol, ethyl alcohol and other organic solvents.
Merck 
14,4841
Stabilität:
Stable. Incompatible with strong oxidizing agents. Combustible.
InChI
InChI=1S/CH4/h1H4
InChIKey
VNWKTOKETHGBQD-UHFFFAOYSA-N
SMILES
C
CAS Datenbank
9004-64-2
EPA chemische Informationen
Cellulose, 2-hydroxypropyl ether (9004-64-2)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
S-Sätze: 24/25
WGK Germany  1
RTECS-Nr. NF9050000
3-10
Selbstentzündungstemperatur 752 °F
TSCA  Yes
HS Code  39129000
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitsschädlich bei Verschlucken. Akute Toxizität oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H332 Gesundheitsschädlich bei Einatmen. Akute Toxizität inhalativ Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P271, P304+P340, P312
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" />
Sicherheit
P261 Einatmen von Staub vermeiden.
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P270 Bei Gebrauch nicht essen, trinken oder rauchen.
P271 Nur im Freien oder in gut belüfteten Räumen verwenden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P301+P312 BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P304+P340 BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P312 Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P330 Mund ausspülen.
P501 Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Hydroxypropyl cellulose Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

Beschreibung

Hydroxypropyl cellulose is a cellulose ether containing hydroxypropyl substitution. It occurs as a white powder. It is soluble in water and in certain organic solvents. It may contain a suitable anticaking agent.

Chemische Eigenschaften

Hydroxypropyl cellulose is a white to slightly yellow-colored, odorless and tasteless powder.

Verwenden

Hydroxypropyl Cellulose is used in the synthesis of nanoparticle carriers for drug delivery.

Definition

A cellulose ether with hydroxypropyl substitution.

Vorbereitung Methode

A purified form of cellulose is reacted with sodium hydroxide to produce a swollen alkali cellulose that is chemically more reactive than untreated cellulose. The alkali cellulose is then reacted with propylene oxide at elevated temperature and pressure. The propylene oxide can be substituted on the cellulose through an ether linkage at the three reactive hydroxyls present on each anhydroglucose monomer unit of the cellulose chain. Etherification takes place in such a way that hydroxypropyl substituent groups contain almost entirely secondary hydroxyls. The secondary hydroxyl present in the side chain is available for further reaction with the propylene oxide, and ‘chaining-out’ may take place. Thisresults in the formation of side chains containing more than 1 mole of combined propylene oxide.

Allgemeine Beschreibung

Hydroxypropyl cellulose (HPC) is biocompatible in nature and exhibits low critical solution temperature (LCST). It has been reported to be prepared by reacting cellulose with alkali, producing alkali cellulose which is consecutively reacted with propylene oxide. HPC is soluble in water at lower than RT. Viscosity behaves inversely to rise in temperature.

Sicherheit(Safety)

Hydroxypropyl cellulose is widely used as an excipient in oral and topical pharmaceutical formulations. It is also used extensively in cosmetics and food products.
Hydroxypropyl cellulose is generally regarded as an essentially nontoxic and nonirritant material. It is not absorbed from the gastrointestinal tract and is fully recovered in feces after oral administration in rats. It does not exhibit skin irritation or skin sensitization. However, the use of hydroxypropyl cellulose as a solid ocular insert has been associated with rare reports of discomfort or irritation, including hypersensitivity and edema of the eyelids. Adverse reactions to hydroxypropyl cellulose are rare. However, it has been reported that a single patient developed contact dermatitis due to hydroxypropyl cellulose in a transdermal estradiol patch. The WHO has specified an acceptable daily intake for
hydroxypropyl cellulose of up to 1500 mg/kg body-weight. Excessive consumption of hydroxypropyl cellulose may have a laxative effect.
LD50 (rat, IV): 0.25 g/kg
LD50 (rat, oral): 10.2 g/kg

Lager

Hydroxypropyl cellulose powder is a stable material, although it is hygroscopic after drying.
Aqueous solutions of hydroxypropyl cellulose are stable at pH 6.0–8.0, with the viscosity of solutions being relatively unaffected. However, at low pH aqueous solutions may undergo acid hydrolysis, resulting in chain scission and hence a decrease in solution viscosity. The rate of hydrolysis increases with increasing temperature and hydrogen ion concentration. At high pH, alkalicatalyzed oxidation may degrade the polymer and result in a decrease in viscosity of solutions. This degradation can occur owing to the presence of dissolved oxygen or oxidizing agents in a solution.
Increasing temperature causes the viscosity of aqueous solutions to decrease gradually until the viscosity drops suddenly at about 45°C owing to the limited solubility of hydroxypropyl cellulose. However, this process is reversible and on cooling the original viscosity is restored.
The high level of substitution of hydroxypropyl cellulose improves the resistance of the polymer to degradation by molds and bacteria. However, aqueous solutions are susceptible to degradation under severe conditions and a viscosity decrease may occur. Certain enzymes produced by microbial action will degrade hydroxypropyl cellulose in solution. Therefore, for prolonged storage, an antimicrobial preservative should be added to aqueous solutions. Solutions of hydroxypropyl cellulose in organic solvents do not generally require preservatives.
Ultraviolet light will also degrade hydroxypropyl cellulose and aqueous solutions may therefore decrease slightly in viscosity if exposed to light for several months.
Aqueous hydroxypropyl cellulose solutions have optimum stability when the pH is maintained at 6.0–8.0, and also when the solution is protected from light, heat, and the action of microorganisms. Hydroxypropyl cellulose powder should be stored in a wellclosed container in a cool, dry place.

Inkompatibilitäten

Hydroxypropyl cellulose in solution demonstrates some incompatibility with substituted phenol derivatives, such as methylparaben and propylparaben. The presence of anionic polymers may increase the viscosity of hydroxypropyl cellulose solutions.
The compatibility of hydroxypropyl cellulose with inorganic salts varies depending upon the salt and its concentration. Hydroxypropyl cellulose may not tolerate high concentrations of other dissolved materials.
The balance of the hydrophilic–lipophilic properties of the polymer, which are required for dual solubility, reduces its ability to hydrate with water and it therefore tends to be salted out in the presence of high concentrations of other dissolved materials.
The precipitation temperature of hydroxypropyl cellulose is lower in the presence of relatively high concentrations of other dissolved materials that compete for the water in the system;

Regulatory Status

GRAS listed. Accepted for use as a food additive in Europe. Included in the FDA Inactive Ingredients Database (oral capsules and tablets; topical and transdermal preparations). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Hydroxypropyl cellulose Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Hydroxypropyl cellulose Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 383)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Hebei Yime New Material Technology Co., Ltd.
+86-66697723 +86-17703311139
admin@china-yime.com China 563 58
Hebei Mojin Biotechnology Co., Ltd
+86 13288715578 +8613288715578
sales@hbmojin.com China 12829 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325
sales1@chuanghaibio.com China 5893 58
ZhenYiBio Technology Inc
+8615309206328
alexxue@zhenyibio.com China 296 58
Hebei Fengjia New Material Co., Ltd
+86-0311-87836622 +86-17333973358
sales06@hbduling.cn China 8054 58
Hebei Kingfiner Technology Development Co.Ltd
+86-15532196582 +86-15373005021
lisa@kingfinertech.com China 2990 58
airuikechemical co., ltd.
+undefined86-15315557071
sales02@sdzhonghuimaterial.com China 983 58
Shaanxi TNJONE Pharmaceutical Co., Ltd
+8618092446649
sarah@tnjone.com China 1143 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651
admin@zlchemi.com China 3002 58
Hebei Shengyang Water Conservancy Engineering Co., Ltd.
+8615373025980
clara@hbshengyang.com China 874 58

9004-64-2()Verwandte Suche:


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