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Methyl cellulose

Methyl cellulose Struktur
9004-67-5
CAS-Nr.
9004-67-5
Englisch Name:
Methyl cellulose
Synonyma:
MC;methocel;MODIFIED CELLULOSE;tylose;Methyl ether cellulose;Methylcellulose, 400 cP, FCC;Methyl cellulose - Viscosity 40000 cPs;nicel;viscol;adulsin
CBNumber:
CB3474718
Summenformel:
C20H38O11
Molgewicht:
454.50912
MOL-Datei:
9004-67-5.mol

Methyl cellulose Eigenschaften

Schmelzpunkt:
290-305 °C
Dichte
1.01 g/cm3(Temp: 70 °C)
FEMA 
2696 | METHYL CELLULOSE
Brechungsindex
1.4970
storage temp. 
Room Temperature
L?slichkeit
Practically insoluble in hot water, in acetone, in anhydrous ethanol and in toluene. It dissolves in cold water giving a colloidal solution.
Aggregatzustand
powder
Farbe
White, yellow-white or grayish-white
Geruch (Odor)
odorless
Geruchsart
odorless
Wasserl?slichkeit
SOLUBLE IN COLD WATER
Merck 
14,6040
Dielectric constant
3.0(Ambient)
Stabilit?t:
Stable. Incompatible with strong oxidizing agents, bleach, perchloric acid, nitric acid, perchlorates, alkali nitrates, alkali nitrites, calcium oxide.
EPA chemische Informationen
Methylcellulose (9004-67-5)

Sicherheit

S-S?tze: 24/25
WGK Germany  3
RTECS-Nr. FJ5959000
3
TSCA  Yes
HS Code  39129000
Giftige Stoffe Daten 9004-67-5(Hazardous Substances Data)

Methyl cellulose Chemische Eigenschaften,Einsatz,Produktion Methoden

S-S?tze Betriebsanweisung:

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

Chemische Eigenschaften

Methyl cellulose is a water soluble, gel-like substance with no odor and no taste.

Verwenden

Methyl cellulose is used as a thickener and an emulsifier in various food and cosmetic products; as a gel in advanced cookery and as a lubricant. It is also involved in the treatment of constipation. It acts as a buffer additive in capillary electrophoresis to control electoosmotic flow for improved separations. In paper and textile industries, it is used as a sizing, thereby protecting the fibers from water or oil.

synthetische

Prepared from wood pulp or cotton by treatment with alkali and methylation of alkali cellulose with methyl chloride.

Vorbereitung Methode

Methylcellulose is prepared from wood pulp (cellulose) by treatment with alkali followed by methylation of the alkali cellulose with methyl chloride. The product is then purified and ground to powder form.

Allgemeine Beschreibung

Odorless white or creamy white fibrous powder. Tasteless.

Air & Water Reaktionen

Methyl cellulose is hygroscopic. Swells in water to a viscous, colloidal solid. Slightly water soluble.

Reaktivit?t anzeigen

Methyl cellulose is incompatible with strong oxidizing agents. Methyl cellulose is also incompatible with aminacrine HCl, chlorocresol, mercuric chloride, phenol resorcinol, tannic acid and silver nitrate.

Brandgefahr

Flash point data for Methyl cellulose are not available; however, Methyl cellulose is probably combustible.

Sicherheitsprofil

A poison by intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating fumes.

Lager

Methylcellulose powder is stable, although slightly hygroscopic. The bulk material should be stored in an airtight container in a cool, dry place.
Solutions of methylcellulose are stable to alkalis and dilute acids at pH 3–11, at room temperature. At pH less than 3, acid-catalyzed hydrolysis of the glucose–glucose linkages occurs and the viscosity of methylcellulose solutions is reduced.On heating, solution viscosity is reduced until gel formation occurs at approximately 50°C;
Methylcellulose solutions are liable to microbial spoilage and antimicrobial preservatives should therefore be used. Solutions may also be sterilized by autoclaving, although this process can decrease the viscosity of a solution.The change in viscosity after autoclaving is related to solution pH. Solutions at pH less than 4 had viscosities reduced by more than 20% subsequent to autoclaving.

Inkompatibilit?ten

chlorocresol; mercuric chloride; phenol; resorcinol; tannic acid; silver nitrate; cetylpyridinium chloride; p-hydroxybenzoic acid; paminobenzoic acid; methylparaben; propylparaben; and butylparaben.
Salts of mineral acids (particularly polybasic acids), phenols, and tannins will coagulate solutions of methylcellulose, although this can be prevented by the addition of ethanol (95%) or glycol diacetate. Complexation of methylcellulose occurs with highly surface-active compounds such as tetracaine and dibutoline sulfate.
High concentrations of electrolytes increase the viscosity of methylcellulose mucilages owing to the ‘salting out’ of methylcellulose. With very high concentrations of electrolytes, the methylcellulose may be completely precipitated in the form of a discrete or continuous gel. Methylcellulose is incompatible with strong oxidizing agents.

Regulatory Status

GRAS listed. Accepted as a food additive in the USA, Europe and Japan. Included in the FDA Inactive Ingredients Database (sublingual tablets; IM injections; intrasynovial injections; nasal preparations; ophthalmic preparations; oral capsules, oral suspensions, and oral tablets; topical and vaginal preparations). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.Reported in the EPA TSCA inventory.

Methyl cellulose Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Methyl cellulose Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 503)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Hebei Mujin Biotechnology Co.,Ltd
+86 13288715578 +8613288715578
sales@hbmojin.com China 12832 58
Hebei Weibang Biotechnology Co., Ltd
+8617732866630
bess@weibangbio.com China 18148 58
Hebei Jingbo New Material Technology Co., Ltd
+8619931165850
hbjbtech@163.com China 1000 58
airuikechemical co., ltd.
+86-18353166132 +86-18353166132
sales02@airuikechemical.com China 983 58
Hebei Saisier Technology Co., LTD
+86-18400010335 +86-18034520335
admin@hbsaisier.cn China 1015 58
Shaanxi TNJONE Pharmaceutical Co., Ltd
+8618092446649
sarah@tnjone.com China 1143 58
Hebei Longbang Technology Co., LTD
+86-18633929156 +86-18633929156
admin@hblongbang.com China 945 58
HebeiShuoshengImportandExportco.,Ltd
+86-18532138899 +86-18532138899
L18532138899@163.com China 939 58
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
+8615350851019
admin@86-ss.com China 1001 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21634 55

9004-67-5()Verwandte Suche:


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