PRODUCTS

NATROSOL 250 HHR

Natrosol 250 HHR is an off-white powder that is easily dispersed and dissolved in cold or hot water, to produce solutions of varying viscosities.
Natrosol 250 HHR is used across a wide range of industries due to its excellent thickening, gelling, and stabilizing properties.
Natrosol 250 HHRs versatility makes it a valuable ingredient in many formulations, particularly in sectors such as personal care, pharmaceuticals, food, and paints and coatings.

CAS Number: 9004-62-0
Molecular Formula: C29H52O21
EINECS Number: 618-387-5

Synonyms: 2-hydroxyethylcelluloseether;ah15;aw15(polysaccharide);aw15[polysaccharide];bl15;cellosize;The blood coHydroxyethyl cellulose etherngeals the appearance board;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, Hydroxyethyl cellulose, 9004-62-0, Cellulose, 2-hydroxyethyl ether, 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, Hydroxyethyl-cellulose, SCHEMBL23306563, DTXSID60873934, CWSZBVAUYPTXTG-UHFFFAOYSA-N, DA-64321, NS00007183, H11622, 2-Hydroxyethyl cellulose; Cellulose hydroxyethyl ether, Hydroxyethyl cellulose (4,500-6,500mPa.s, 2% in Water at 25 degrees C), 2-O-(2-Hydroxyethyl)-4-O-methylhexopyranosyl-(1->4)-[4-O-methylhexopyranosyl-(1->6)]hexopyranosyl-(1->5)-2,6-anhydro-1-deoxyheptitol.

Natrosol 250 HHR 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 HHR can be used in formulations for dishwashing, fabric care, and hard surface cleaning. Additional grades are available.
Natrosol 250 HHR is a brand name for a specific grade of hydroxyethylcellulose (HEC), a water-soluble polymer derived from cellulose, which is the structural component of plant cell walls.

Natrosol 250 HHR is produced by modifying cellulose with hydroxyethyl groups, which enhances its solubility in water and gives it thickening, gelling, and film-forming properties.
Natrosol 250 HHR, in particular, is known for its high hydration rate (as indicated by "HHR") and is designed to provide excellent thickening and viscosity control in a variety of aqueous formulations.

This specific grade of Natrosol 250 HHR is widely used in industries such as cosmetics, pharmaceuticals, food, and paints and coatings due to its versatility and performance. In cosmetics and personal care products, Natrosol 250 HHR is commonly used as a thickening agent, suspension agent, and stabilizer in creams, lotions, shampoos, conditioners, and gels, as it helps improve the texture and consistency of these formulations.
Its ability to form a smooth gel-like texture while maintaining clarity makes it ideal for formulations that require transparency, such as hair care products and clear gels.
Natrosol 250 HHR is white to yellowish fibrous or powdery solid, non-toxic, tasteless and soluble in water.

Insoluble in common organic solvents. Having properties such as thickening, suspending, adhesive, emulsifying, dispersing, water holding.
Different viscosity range of solution can be prepared. Having exceptionally good salt solubility to electrolyte.
Hetastarch, another nonproteinaceous colloid, is a complex mixture of ethoxylated amylopectins ranging in molecular weight from 10 to 1,000 kDa (average molecular weight, ~450 kDa). When infused as a 6% solution, hetastarch approximates the activity of human albumin.

The larger molecular weights, however, increase its intravascular residence time as well as its plasma expansion effects relative to albumin.
Natrosol 250 HHR is synthetically produced, so it is degraded more slowly and is less antigenic than other colloids.
Despite these advantages, Natrosol 250 HHR is quite expensive and also has no oxygen-carrying capacity.

Natrosol 250 HHR acts as a thickening and stabilizing agent.
It is a non-ionic, water-soluble polymer made by reacting ethylene oxide with alkali-cellulose under rigidly controlled conditions.
Natrosol 250 HHR is pseudoplastic or shear-thinning.

Natrosol 250 HHR is easily dissolved in cold or hot water to give crystal-clear solutions of varying viscosities and generally insoluble in organic solvents.
Natrosol 250 HHR CS is used in toothpastes, hair conditioners, liquid soaps, bubble bath, hand creams and lotions.
Natrosol 250 HHR is a commonly used cellulose ethers organic water-based ink thickening agent, belongs to a water-soluble non-ionic compound, with good water thickening ability, degraded by oxygen, acid and enzyme, under alkaline conditions can be crosslinked by Cu2 +.

Has thermal stability, when heated, does not appear gelation, does not occur precipitation under acidic conditions, the film-forming property is good, the aqueous solution can be made of a transparent film, can be derived from the reaction of alkali cellulose with ethylene oxide, having properties such as thickening, emulsifying, adhesive, suspension, film-forming, maintaining moisture and protectiving colloid. The role of thickener in the aqueous ink is thickened. The viscosity of the ink added a thickening agent increases, can improve the physical and chemical stability of the ink; due to the increased viscosity, rheology of the ink can be controlled at the time of printing; the pigment and filler in ink is not easy to precipitate, increasing the storage stability of the water-based ink.

Thickening agent is a cellulose-based material and (or) polyvinyl alcohol substances.
Natrosol 250 HHR substances may be methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, Hydroxyethyl cellulose and hydroxypropylmethyl cellulose; polyvinyl alcohol material may be an or several species of polyethylene 400, 600, 800, 1000, 1600, 2000, 4000, 6000.

Natrosol 250 HHR is soluble in hot or cold water, and does not precipitate at high temperature or boiling, so it has a wide range of solubility and viscosity characteristics, as well as non-thermal gelling properties.
Natrosol 250 HHR is a non-ionic polymer material , can coexist with a wide range of other water-soluble polymers, surfactants, and salts, and is an excellent colloidal thickener for high-concentration dielectric solutions.

The water retention capacity of Natrosol 250 HHR is twice that of methyl cellulose, and it has better flow regulation; the dispersing ability of hydroxyethyl cellulose is comparable to that of methyl cellulose and hydroxypropyl methyl cellulose The specific dispersing ability is the worst, but the protective colloid ability is the strongest.
A purified form of cellulose is reacted with sodium hydroxide to produce a swollen alkali cellulose, which is chemically more reactive than untreated cellulose. The alkali cellulose is then reacted with ethylene oxide to produce a series of hydroxyethyl cellulose ethers.

The manner in which ethylene oxide is added to cellulose can be described by two terms, the degree of substitution (DS) and the molar substitution (MS).
The DS designates the average number of hydroxyl positions on the anhydroglucose unit that have been reacted with ethylene oxide. Since each anhydroglucose unit of the cellulose molecule has three hydroxyl groups, the maximum value for DS is 3. MS is defined as the average number of ethylene oxide molecules that have reacted with each anhydroglucose unit.

Once a hydroxyethyl group is attached to each unit, it can further react with additional groups in an end-to-end formation.
This reaction can continue and there is no theoretical limit for MS.
Natrosol 250 HHR is prepared from alkali cellulose and ethylene oxide.

Natrosol 250 HHR may be noted that the hydroxyethyl group itself can react with ethylene oxide so that side-chains of varying length may be present in the product.
Commercial materials generally contain between 1.4 and 2.0 ethylene oxide residues per glucose residue and have a degree of substitution of about 0.8-1.0.
Included in the FDA Inactive Ingredients Database (ophthalmic preparations; oral syrups and tablets; otic and topical preparations).

Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.
Natrosol 250 HHR is not currently approved for use in food products in Europe or the USA, although it is permitted for use in indirect applications such as packaging.
This restriction is due to the high levels of ethylene glycol residues that are formed during the manufacturing process.

Natrosol 250 HHR is a high efficiency non-ionic thickener, water retention aid and rheology modifier.
It is a water-soluble, hydroxyethyl cellulose surface-treated with glyoxal.
It controls rheology before, during, and after application.

Natrosol 250 HHR offers good pseudoplastic flow behavior, mechanical- and chemical stability.
It shows wide compatibility with other materials such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers, pigments, surfactants, & preservatives.
Natrosol 250 HHR provides fast dispersion, good color acceptance, color development and viscosity retention on tinting.

Natrosol 250 HHR is suitable for all types of water-based paints and surface coatings.
It can be used as a protective colloid, stabilizer and suspending agent.
In personal care formulations such as shampoos, conditioners, lotions, and creams, Natrosol 250 HHR is used to increase the viscosity and create the desired texture.

Natrosol 250 HHRs ability to provide smooth and non-greasy formulations makes it a staple ingredient in many beauty and skin care products.
Natrosol 250 HHR is used in products like gels, emulsions, and face masks to ensure that solid particles, such as exfoliants or active ingredients, remain evenly distributed throughout the formula.
This helps maintain product consistency and ensures that the product performs well during use.

Natrosol 250 HHR is commonly used in clear gels, including hair gels and body gels, because of its ability to form stable, transparent, and non-crystalline gels. This is crucial for products that require a smooth, gel-like consistency without cloudiness or instability.
Natrosol 250 HHR has a viscosity range of 3,400-5,000 cps.

Natrosol 250 HHR is nonionic.
Natrosol 250 HHR is water-soluble polymer.
Natrosol 250 HHR is used to produce solutions of varying viscosities.

Natrosol 250 HHR disperses easily in cold or hot water.
Natrosol 250 HHR is a series of o-white powders that dissolve.
Natrosol 250 HHR is chemically used to achieve an optimum balance of properties.

Natrosol 250 HHR is short to very long chain cellulose etheried into hydroxyethyl ether.
Natrosol 250 HHR acts as a viscosity and rheology modier, especially in applications where a non-ionic material is desired.
Natrosol 250 HHR is a chemical compound used as a protective colloid.

Natrosol 250 HHR is water retention agent.
Natrosol 250 HHR is used as stabilizer.
Natrosol 250 HHR acts as a suspending agent.

Natrosol 250 HHR is used in all kinds of water-based paints.
Natrosol 250 HHR has various functions in surface coatings.
Natrosol 250 HHR is used in the manufacture of adhesives.

Melting point: 288-290 °C (dec.)
Density: 0.75 g/mL at 25 °C(lit.)
bulk density: 350kg/m3
storage temp.: 2-8°C
solubility: H2O: ≤5 wt. % at 20 °C
form: powder
color: Light brown powder
Odor: Odorless
PH: pH(20g/l,25℃) : 5.0～8.0
biological source: rabbit
Viscosity: ~270 mPas 20°C
Water Solubility: almost transparency
Merck: 14,4673
Stability: Stable. Incompatible with strong oxidizing agents, acid chlorides, acid anhydrides
InChI: InChI=1S/C29H52O21/c1-10-15(34)16(35)24(13(8-33)45-10)49-28-20(39)18(37)25(50-29-26(43-5-4-30)21(40)23(42-3)12(7-32)47-29)14(48-28)9-44-27-19(38)17(36)22(41-2)11(6-31)46-27/h10-40H,4-9H2,1-3H3
InChIKey: CWSZBVAUYPTXTG-UHFFFAOYSA-N

In the pharmaceutical industry, Natrosol 250 HHR is often used as an excipient in oral drug formulations, as it can modify the release rate of active ingredients, allowing for sustained or controlled release.
Natrosol 250 HHR is also employed in tablet coatings to improve the stability and release profile of the drug.
Additionally, Natrosol 250 HHR finds applications in the food industry, where it acts as a stabilizer, thickener, and emulsifier, improving the texture and consistency of products like sauces, dressings, and beverages.

Natrosol 250 HHR is prized for its ability to maintain uniform viscosity and texture under various conditions, even in acidic or alkaline environments.
Natrosol 250 HHR, a nonionic, water-soluble polymer is a white, free owing granular powder that displays fast dispersion without lumping when added to water.
Natrosol 250 HHR has a viscosity range of 3,400-5,000 cps.

Natrosol 250 HHR is nonionic
Natrosol 250 HHR is water-soluble polymer
Natrosol 250 HHR is used to produce solutions of varying viscosities.

Natrosol 250 HHR disperses easily in cold or hot water
Natrosol 250 HHR is a series of o-white powders that dissolve.
Natrosol 250 HHR is chemically used to achieve an optimum balance of properties.

Natrosol 250 HHR is short to very long chain cellulose etheried into hydroxyethyl ether.
Natrosol 250 HHR acts as a viscosity and rheology modier, especially in applications where a non-ionic material is desired.
Use as a food additive indicates good tolerance of small amounts, but excessive amounts or overuse may bring irritant and /or harmful effects.

Polysaccharides are not substantially absorbed from the gastrointestinal tract but may produce a laxative effect.
Natrosol 250 HHR is also known as water retention aid.
Natrosol 250 HHR is a compound with use as a rheology modier.

Normal Natrosol 250 HR gives these systems excellent ow properties.
Natrosol 250 HHR is a nonionic water-soluble polymer.
Natrosol 250 HHR is a white colored substance.

Natrosol 250 HHR is in free owing granular powder form.
Natrosol 250 HHR can also be used in the manufacture of conditioners.
Natrosol 250 HHR is also found in the content of liquid soaps.

Natrosol 250 HHR is a chemical-based ingredient involved in the manufacture of shaving gels and foams.
Natrosol 250 HHR is involved in the production of toothpaste (high salt).
Natrosol 250 HHR is found in the structure of wet wipes.

Natrosol 250 HHR has a very important place in the cosmetics industry as it is involved in the production of make-up/mascara products.
Natrosol 250 HHR can be used in a variety of applications including Deodorant solids.
Natrosol 250 HHR is a substance encountered in the structure of lubricating gels.

Natrosol 250 HHR can be thinned by pseudoplastic or cutting solutions.
As a result, personal care products formulated with Natrosol 250 HHR disperse richly and thickly from the container.
Natrosol 250 HHR, but spreads easily on hair and skin.

Natrosol 250 HHR is a nonionic water-soluble polymer.
Natrosol 250 HHR is insoluble in most organic solvents.
It is incompatible with zein and partially compatible with the following water-soluble compounds: casein; gelatin; methylcellulose; polyvinyl alcohol, and starch.

Natrosol 250 HHR can be used with a wide variety of watersoluble antimicrobial preservatives.
However, sodium pentachlorophenate produces an immediate increase in viscosity when added to hydroxyethyl cellulose solutions.
Natrosol 250 HHR has good tolerance for dissolved electrolytes, although it may be salted out of solution when mixed with certain salt solutions.

For example, the following salt solutions will precipitate a 10% w/v solution of Cellosize WP-09 and a 2% w/v solution of Cellosize WP-4400: sodium carbonate 50% and saturated solutions of aluminum sulfate; ammonium sulfate; chromic sulfate; disodium phosphate; magnesium sulfate; potassium ferrocyanide; sodium sulfate; sodium sulfite; sodium thiosulfate; and zinc sulfate.
Natrosol 250 HHR is soluble in most 10% salt solutions, excluding sodium carbonate and sodium sulfate, and many 50% salt solutions with the exception of the following: aluminum sulfate; ammonium sulfate; diammonium phosphate; disodium phosphate; ferric chloride; magnesium sulfate; potassium ferrocyanide; sodium metaborate; sodium nitrate; sodium sulfite; trisodium phosphate; and zinc sulfate. Natrosol 150 is generally more tolerant of dissolved salts than is Natrosol 250.

Natrosol 250 HHR is also incompatible with certain fluorescent dyes or optical brighteners, and certain quaternary disinfectants which will increase the viscosity of aqueous solutions.
Natrosol 250 HHR is a compound with use as a rheology modier.
Natrosol 250 HHR is a nonionic water-soluble polymer.

Natrosol 250 HHR is a white colored substance.
Natrosol 250 HHR is in free owing granular powder form.
Natrosol 250 HHR can also be used in the manufacture of conditioners.

Natrosol 250 HHR is also found in the content of liquid soaps.
Natrosol 250 HHR acts as a thickening and stabilizing agent.
Natrosol 250 HHR is made by reacting ethylene oxide with alkali-cellulose under strictly controlled conditions.

Production methods:
Alkali cellulose is a natural polymer, each of a fiber-based ring contains three hydroxyl groups, the most active hydroxyl reaction to give Hydroxyethyl cellulose.
The raw material cotton linter or refined pulp meal were immersed in 30% liquid caustic soda, took out to squeeze after half an hour.
Squeezed water containing soda to 1: 2.8, pulverized.

Pulverized alkali cellulose was added into the reaction kettle, sealed, vacuumized, nitrogen charge, repeated to vacuumize and nitrogen charge to replace atmosphere in the reaction kettle.
Precooled the liquid ethylene oxide was pressed into, cooling water was pumped in jacket of reaction kettle, controlled at about 25 ℃ and reacted for 2 h, crude product of Hydroxyethyl cellulose was obtained.
The crude product was washed with alcohol, added acetic acid to adjust pH value to 4-6, added glyoxal to crosslink and aging.

Then washed with water, centrifugal dewatering, dryed, milled to obtain Hydroxyethyl cellulose.
Raw material consumption (kg/t) linter or low pulp meal 730-780 liquid caustic soda (30%) 2400 ethylene oxide 900 alcohol (95%) 4500 acetic acid 240 Glyoxal (40%) 100-300.
The raw material cotton linter or refined pulp meal were immersed in 30% liquid caustic soda, after half an hour took out to squeeze.

Squeezed water containing soda to 1: 2.8, pulverized alkali cellulose was added into the reaction kettle, sealed and vacuumized, nitrogen charge, used nitrogen to replace all atmosphere in the reaction kettle,Precooled the liquid ethylene oxide was pressed into.
In the cooling, controlled at 25 ℃ and reacted for 2 h, to give the crude product of crude Hydroxyethyl cellulose.
The crude product was washed with ethanol and acetic acid was added to adjust the pH value to 4-6. added glyoxal to crosslink and aging, washed with water fast, finally centrifugal dehydration, dried, milled, obtained low salt Hydroxyethyl cellulose.

Storage:
Natrosol 250 HHR powder is a stable though hygroscopic material.
Aqueous solutions of Natrosol 250 HHR are relatively stable at pH 2–12 with the viscosity of solutions being largely unaffected.
However, solutions are less stable below pH 5 owing to hydrolysis. At high pH, oxidation may occur.

Increasing the temperature reduces the viscosity of aqueous Natrosol 250 HHR solutions.
However, on cooling, the original viscosity is restored.
Solutions may be subjected to freeze–thawing, high-temperature storage, or boiling without precipitation or gelation occurring.

Natrosol 250 HHR is subject to enzymatic degradation, with consequent loss in viscosity of its solutions.
Enzymes that catalyze this degradation are produced by many bacteria and fungi present in the environment.
For prolonged storage, an antimicrobial preservative should therefore be added to aqueous solutions.

Aqueous solutions of Natrosol 250 HHR may also be sterilized by autoclaving.
Natrosol 250 HHR powder should be stored in a well-closed container, in a cool, dry place.

Uses:
Natrosol 250 HHR is used for cracking method to extract polymerized dispersing agents such as oil water base gel fracturing fluid, polystyrene and polyvinyl chloride.
Also for latex thickening agent in paint industry, hygristor in electronics industry, cement anti-coagulant agent and water retention agent in construction industry.
Glazing in ceramic industry and toothpaste binder.

Also widely used in many aspects such as printing and dyeing, textile, paper, pharmaceutical, health, food, cigarettes, pesticides and fire extinguishing agent.
Natrosol 250 HHR is used as a water-based drilling fluids, and thickening agent and filtrate reducer of completion fluids, thickening agent has obvious effect on brine drilling fluid.
Also can be used for filtrate reducer of oil well cement. Cross-linking with the polyvalent metal ions into a gel.

As surfactants, protective colloids, emulsion stabilizers in combination with emulsion such as vinyl chloride, vinyl acetate emulsion, and a tackifier, dispersant, dispersion stabilizer of emulsion.
Widely used in many aspects such as coatings, fibers, dyeing, paper, cosmetics, pharmaceuticals, pesticides.
There are many uses in oil exploitation and machinery industry.

As surfactants, latex thickening agent, protective colloid, oil exploitation fracturing fluid and polystyrene and polyvinyl chloride dispersing agents, etc.
Natrosol 250 HHR is a thickener, protective colloid, binder, stabilizer, and suspending agent.
Natrosol 250 HHR is obtained from wood pulp Copyright 2014 Cengage Learning. All Rights Reserved.

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Natrosol 250 HHR is widely used in Cosmetics, cleaning solutions and other household products.
Natrosol 250 HHR is often used with hydrophobic drugs in capsule formulations to improve the dissolution of drugs in gastrointestinal uids.
Natrosol 250 HHR is widely used in the oil and gas industry, industrial applications, paints and coatings, ceramics, adhesives, emulsion polymerization, inks, construction, welding rods, pencils and joint sealants.

Natrosol 250 HHR may be one of the main ingredients in water-based personal lubricants.
Natrosol 250 HHR is also an important component in the formation of large bubbles as it is water soluble and also provides structural strength to the soap bubble.
Natrosol 250 HHR is often used as slime among other similar chemicals.

Natrosol 250 HHR is widely used as a thickening agent in various cosmetic products such as creams, lotions, shampoos, and conditioners.
It helps improve the texture and viscosity of these formulations, giving them a rich, luxurious feel while ensuring the right consistency for ease of application.
In products like gels, emulsions, and face masks, Natrosol 250 HHR works as a suspension agent, ensuring that solid particles, such as exfoliants, active ingredients, and other particulates, remain evenly distributed throughout the formulation.

This helps maintain the stability of the product and ensures consistent performance during use.
Natrosol 250 HHR is commonly used in hair care and skin care gels because of its ability to form stable, transparent, and non-crystalline gels.
This is especially important in products that require clarity and smoothness, such as clear hair gels, body gels, and facial gels, where the consistency and appearance are crucial.

In the pharmaceutical industry, Natrosol 250 HHR serves as an excipient in oral liquid formulations like syrups and suspensions.
Its ability to control viscosity allows for easy swallowing and uniform distribution of active ingredients within the formulation.
Additionally, it can be used to modify the texture of drug formulations, making them more palatable and easier to administer.

Natrosol 250 HHR is also used in tablet coatings.
It helps form a protective layer around tablets, improving their stability and shelf life.
The polymer’s ability to modify the release of the active ingredient in controlled or sustained-release formulations is another benefit in pharmaceutical applications, helping to ensure that medications are released gradually over time.

In topical creams, ointments, and gels, Natrosol 250 HHR aids in the controlled release of active ingredients through the skin, allowing for targeted and efficient delivery.
Its stabilizing properties also help maintain the consistency and texture of these products, improving their performance.
Natrosol 250 HHR is used in the food industry as a stabilizer and thickener in a variety of products, including sauces, dressings, soups, and beverages.

Natrosol 250 HHR enhances the mouthfeel, texture, and consistency of these items, preventing them from becoming too runny or separating over time.
It is particularly useful in emulsions, where it ensures the uniform dispersion of oil and water components.
Natrosol 250 HHR is commonly used in salad dressings, mayonnaise, and other emulsified food products.

In these applications, Natrosol 250 HHR ensures that the oil and water phases stay blended, providing a smooth and stable product without separation.
Natrosol 250 HHR is also employed in processed foods such as dairy products, desserts, and baked goods to improve their texture.
It helps maintain the desired consistency and prevents changes in viscosity, which is important for maintaining product quality and appearance during storage and distribution.

Natrosol 250 HHR is used as a rheology modifier in paints and coatings, where it helps control the flow properties and viscosity of the formulation.
This ensures that the paint is easy to apply and provides a smooth, even finish on the surface being painted.
The polymer also helps prevent splattering, making the application process more efficient.

Natrosol 250 HHR works as a suspension agent in paints by ensuring that pigments and other solid components remain uniformly dispersed throughout the formula.
This prevents the settling of particles, ensuring consistent color and finish throughout the product.
In emulsified paint formulations, Natrosol 250 HHR helps stabilize the emulsion, preventing separation over time.

Natrosol 250 HHR ensures that the product maintains its consistency and performance during storage, handling, and application.
Natrosol 250 HHR is used as a sizing agent to enhance the durability and texture of fabrics.
It helps improve the fabric's smoothness, allowing for better handling during processing and finishing.

The polymer’s thickening properties also help to reduce fabric friction and improve its overall strength.
Natrosol 250 HHR is used in the paper industry to improve the texture and strength of paper products.
By modifying the viscosity of aqueous coatings or pulp suspensions, it enhances the quality and performance of the paper, making it more durable and resistant to wear.

In construction, particularly in cement and mortar formulations, Natrosol 250 HHR acts as a thickener, improving the workability and consistency of the mixture.
Natrosol 250 HHR ensures that the mortar or cement maintains the desired viscosity for easy application and effective bonding.
Natrosol 250 HHR can also be used in agricultural formulations as a thickening agent in pesticides and herbicides.

Its ability to suspend active ingredients evenly helps improve the stability and performance of these formulations during application.
Natrosol 250 HHR is a nonionic, water-soluble polymer widely used in pharmaceutical formulations.
It is primarily used as a thickening agent in ophthalmic and topical formulations, although it is also used as a binder and film-coating agent for tablets.

Natrosol 250 HHR is present in lubricant preparations for dry eye, contact lens care, and dry mouth.
The concentration of hydroxyethyl cellulose used in a formulation is dependent upon the solvent and the molecular weight of the grade.
Natrosol 250 HHR is also widely used in cosmetics.

Natrosol 250 HHR is used as high efficiency nonionic thickener, water retention aid and rheology modifier in all types of water-based paints and surface coatings, in adhesives, and in a variety of other aqueous industrial products.
Regular Natrosol 250 HHR imparts excellent flow properties to these systems.
Natrosol 250 HHR is used in all kinds of water-based paints.

Natrosol 250 HHR has various functions in surface coatings.
Natrosol 250 HHR is used in the manufacture of adhesives.

Natrosol 250 HHR is used as a high eciency nonionic thickener in various other aqueous industrial products.
Natrosol 250 HHR is also known as water retention aid.

Safety Profile:
Natrosol 250 HHR is generally considered safe for use in a wide range of applications, but as with any chemical, there are some potential hazards and precautions to be aware of.
Natrosol 250 HHR is primarily used in ophthalmic and topical pharmaceutical formulations.
It is generally regarded as an essentially nontoxic and nonirritant material.

Acute and subacute oral toxicity studies in rats have shown no toxic effects attributable to hydroxyethyl cellulose consumption, the hydroxyethyl cellulose being neither absorbed nor hydrolyzed in the rat gastrointestinal tract.
However, although used in oral pharmaceutical formulations, hydroxyethyl cellulose has not been approved for direct use in food products.
Glyoxal-treated Natrosol 250 HHR is not recommended for use in oral pharmaceutical formulations or topical preparations that may be used on mucous membranes.

Natrosol 250 HHR is also not recommended for use in parenteral products.
Natrosol 250 HHR in powder form, inhaling dust particles can be an irritation to the respiratory system.
This can lead to symptoms such as coughing, wheezing, or difficulty breathing if significant quantities of dust are inhaled.

Proper ventilation and the use of dust masks are recommended to minimize inhalation risks.
While Natrosol 250 HHR is not classified as a significant skin irritant, prolonged or repeated skin contact could cause mild irritation in some individuals.
It is always advisable to wear gloves when handling the material, especially in its powdered form, to minimize any potential for irritation.

Direct contact with the eyes can cause irritation, leading to redness, discomfort, and watering.
Natrosol 250 HHR is important to wear appropriate eye protection, such as goggles, when handling this substance, particularly in powder form, to avoid accidental exposure.