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NATROSOL HEC
CAS: 9004-62-0
European Community (EC) Number: 618-387-5
Molecular Formula: C29H52O21
Molecular Weight: 736.7
IUPAC Name: 5-[6-[[3,4-dihydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxymethyl]-3,4-dihydroxy-5-[4-hydroxy-3-(2-hydroxyethoxy)-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-methyloxane-3,4-diol
Natrosol hydroxyethylcellulose (hec), a nonionic, water-soluble polymer, is a white, free-flowing granular powder.
Natrosol hydroxyethylcellulose (hec) is made by reacting ethylene oxide with alkali-cellulose under rigidly controlled conditions.
Purified hec for personal care and cosmetic applications is typically sold at 95.0 percent minimum purity (dry basis).
Natrosol hec is easily dissolved in cold or hot water to give crystal-clear, shear-thinning solutions of varying viscosity.
Furthermore, low to medium molecular weight types are fully soluble in glycerol and have good solubility in hydro-alcoholic systems containing up to 60 percent ethanol.
Natrosol hec is generally insoluble in organic solvents.
oral care features and benefits:
-offers excellent tolerance to mono-, di-, and tri-valent cations
-provides rheology properties such as shear-thinning for ease of filling tubes during manufacture and dispensing onto toothbrush
-imparts glossy, smooth ribbon appearance
-inhibits syneresis formation
-is nonionic resulting in compatibility with wide range of actives
oral care applications:
-toothpastes
-mouthwashes
-mouth moisturizers
-mouth sprays and gels
-oral care grades:
Natrosol HEC is easily dissolved in cold or hot water to give crystal clear solutions of varying viscosities.
Solutions of Natrosol HEC are pseudoplastic or shear-thinning.
As a result, personal care products formulated with Natrosol HEC dispense rich and thick from the container, but spread easily on hair and skin.
Natrosol 250 hydroxyethylcellulose (HEC) is a series of off-white powders that are easily dispersed and dissolved in cold or hot water, to produce solutions of varying viscosities.
Chemically, Natrosol 250 hydroxyethylcellulose (HEC) is cellulose of short to very long chain length that has been etherified to a hydroxyethyl ether to achieve an optimum balance of properties.
Natrosol 250 is used as a viscosity and rheology modifier, protective colloid, water retention agent, stabilizer, and suspending agent, particularly in those applications where a nonionic material is desired.
Natrosol 250 hydroxyethylcellulose is a granular powder that dissolves readily in water to give clear, smooth solutions, which exhibit a pseudoplastic flow behaviour.
At neutral pH and ambient temperatures, Natrosol R-grades disperse without lump formation and provide easy dissolution.
These solutions are unaffected by high concentrations of soluble salts.
Viscosity is little affected by mild acids and alkalies.
Because of its nonionic character Natrosol has wide compatibility with other materials, such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers.
Natrosol 250 is used as high efficiency nonionic thickener, water retention aid and rheology modifier in all types of waterbased paints and surface coatings, in adhesives, and in a variety of other aqueous industrial products.
Regular Natrosol 250 imparts excellent flow properties to these systems.
Natrosol B offers the additional feature of superior storage stability when used under conditions that enhance microbial growth.
As a protective colloid and stabilizer Natrosol performs outstandingly in the emulsion and suspension polymerization of many vinyl polymers.
Its unique combination of properties explains its use in pigment dispersions and in tile adhesives.
In toothpaste the lean solvent solubility and compatibility of Natrosol contribute consistency, its dispensability and binding power are widely appreciated by the cosmetic and pharmaceutical industry.
Natrosol hydroxyethylcellulose (HEC) is a nonionic watersoluble polymer derived from cellulose.
Natrosol 250 hydroxyethylcellulose (HEC) is a cellulose ether, but it differs in that it is nonionic and its solutions are unaffected by cations.
Natrosol dissolves readily in cold or hot water.
Natrosol 250 hydroxyethylcellulose (HEC)s solutions have somewhat different flow properties from those obtained with other water-soluble polymers.
Natrosol 250 hydroxyethylcellulose (HEC) is used to produce solutions having a wide range of viscosity.
Such solutions are pseudoplastic—that is, they vary in viscosity depending on the amount of shear stress applied.
It suggests the use of Natrosol as a thickener, protective colloid, binder, stabilizer, and suspending agent in a variety of industrial applications, including pharmaceuticals, textiles, paper, adhesives, decorative and protective coatings, emulsion polymerization, ceramics, and many miscellaneous uses.
Natrosol HEC is a white to light tan, free-flowing powder.
Natrosol HEC dissolves readily in water to give clear, smooth, viscous solutions that are nonionic.
Natrosol dissolves quickly in cold or hot water to form clear, smooth, uniform solutions.
Solutions of Natrosol do not gel or precipitate, even when heated to the boiling point of water.
Natrosol can absorb moisture from the atmosphere, as do other hygroscopic or finely divided materials.
The amount of moisture absorbed depends on the initial moisture content of Natrosol and on the relative humidity of the surrounding air.
Opened bags not totally used may experience moisture uptake.
The Natrosol hydroxyethylcellulose polymer is a hydroxyethyl ether of cellulose.
Each anhydroglucose unit contains three hydroxyls capable of reaction.
By treating cellulose with sodium hydroxide and reacting with ethylene oxide, hydroxyethyl groups are introduced to yield a hydroxyethyl ether.
The reaction product is purified and ground to a fine white powder.
Nature-derived from sustainably sourced cellulose, natrosol hec products are water-soluble, non-ionic polymers that can be used in a variety of personal and home care applications.
These efficient thickeners perform across a wide pH range and demonstrate high salt tolerance and broad surfactant compatibility, enabling clear formulations.
The wood pulp used in our cellulose products is sourced from suppliers who have implemented zero deforestation business practices, adhering to standards set forth by the Forest Stewardship Council (FSC), by the Program for the Endorsement Certification (PEFC.), or both
Our cotton linters are sourced from suppliers who have received third party certifications including the Global Recycled Standard (GRS 4.0) and SCS Recycled Content Standard, certifying that their cotton linters are 100% recycled content.
SYNONYMS:
Hetastarch
Hydroxyethyl cellulose
9004-62-0
5-[6-[[3,4-dihydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxymethyl]-3,4-dihydroxy-5-[4-hydroxy-3-(2-hydroxyethoxy)-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-methyloxane-3,4-diol
SCHEMBL23306563
DTXSID60873934
VZ36173
FT-0627136
H11622
2-O-(2-Hydroxyethyl)-4-O-methylhexopyranosyl-(1->4)-[4-O-methylhexopyranosyl-(1->6)]hexopyranosyl-(1->5)-2,6-anhydro-1-deoxyheptitol
aldiamed
hydroxyethylcellulose
hydroxyethylcellulose, sodium salt
hydroxyl ethyl cellulose
Lacrigel
Minims Artificial Tears
Natrosol 250
