CONDENSED METHYL NAPHTHALENE SULFONATE, SODIUM SALT

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is a water-soluble anionic polymeric dispersant produced by the sulfonation, formaldehyde condensation, and sodium neutralization of methyl naphthalene-containing raw materials.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt provides strong particle dispersion, deflocculation, suspension stabilization, and viscosity-reduction performance in aqueous industrial systems.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is used in agrochemical formulations, dyes, pigments, textiles, ceramics, construction materials, rubber, leather, and specialty water-based dispersions.

CAS Number: 81065-51-2

EC Number: 617-192-2

Molecular Formula: Variable polymeric composition; representative formula (C₁₁H₁₀O₃S·CH₂O)ₓ·xNa

Molecular Weight: Variable according to condensation degree, sulfonation level, and molecular-weight distribution

SYNONYMS

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APPLICATIONS

Condensed Methyl Naphthalene Sulfonate, Sodium Salt serves as a dispersing agent in water-dispersible agrochemical granules containing high concentrations of solid active ingredients.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps the granules break apart rapidly and redisperse uniformly after addition to water.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports wettable-powder formulations requiring rapid wetting and stable particle distribution.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt reduces particle agglomeration while assisting the formation of a homogeneous spray suspension.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions in suspension concentrates containing finely milled hydrophobic active ingredients.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt adsorbs onto particle surfaces and reduces the formation of hard sediment during storage.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes binding and dispersing performance to concentrated granular pesticide formulations.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps balance granule strength with the disintegration and dispersion required during field dilution.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt serves as a dispersant in aqueous pigment pastes used for coatings, inks, and coloration systems.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps lower millbase viscosity and supports more uniform pigment distribution.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports water-based printing inks containing organic pigments, inorganic pigments, or carbon black.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt improves particle separation while helping maintain flow during pumping, circulation, and printing.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to waterborne coating formulations requiring resistance to pigment settling and flocculation.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can improve color development, storage uniformity, and viscosity stability when compatibility is confirmed.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions as a grinding and standardizing aid for disperse dyes.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps maintain finely divided dye particles during milling, drying, storage, and redispersion.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports vat-dye grinding and suspension-dyeing processes.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps prevent dye-particle aggregation under the temperature and electrolyte conditions of the selected process.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to textile-printing pastes requiring controlled dispersion of dyes and pigments.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps maintain color uniformity while the thickener system controls print definition and application viscosity.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt serves as a textile-processing auxiliary in compatible dye baths.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can support dye dispersion in the presence of selected acids, alkalis, electrolytes, and hard-water ions.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions as a dispersing and processing auxiliary in leather-treatment formulations.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps distribute dyes, tanning auxiliaries, fillers, and other water-dispersed ingredients throughout the treatment bath.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports ceramic slips containing clay, alumina, silica, zirconia, or other mineral particles.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can reduce slurry viscosity while allowing a high concentration of ceramic solids to remain processable.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to ceramic casting bodies requiring controlled flow and reduced water demand.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps improve mold filling, particle packing, drying consistency, and dimensional control.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions as a cement-particle dispersant in compatible concrete admixture systems.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can increase fluidity or reduce mixing-water demand by separating flocculated cement particles.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports mortar, grout, and cementitious repair formulations requiring improved workability.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt must be optimized for cement type, sulfate level, temperature, setting time, and other admixtures.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to gypsum slurries used for boards, molds, plasters, and prefabricated components.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can improve slurry flow while reducing the water required to achieve practical processing consistency.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports mineral-filled construction compounds containing calcium carbonate, silica, clay, or cementitious fillers.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt improves wet dispersion when the selected dosage remains compatible with binders and setting reactions.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions as a stabilizing auxiliary in compatible synthetic and natural rubber-latex dispersions.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps prevent coagulation or particle agglomeration during storage, compounding, and controlled processing.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to carbon-black slurries used in rubber, pigments, conductive materials, and specialty formulations.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps wet and separate the high-surface-area carbon particles in aqueous media.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports paper-coating colors and mineral-filler suspensions.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can reduce slurry viscosity and improve the distribution of clay, calcium carbonate, and pigment particles.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions in industrial cleaning formulations requiring suspension of detached particulate soil.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps limit redeposition by maintaining removed inorganic and carbonaceous particles in the wash liquid.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to aqueous mineral-processing slurries requiring deflocculation and controlled solids mobility.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can be evaluated for reducing viscosity during pumping, grinding, classification, or beneficiation.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports selected water-treatment and process-water formulations containing suspended mineral matter.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps maintain particulate dispersion when coagulation is not the intended treatment mechanism.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt functions in drilling-fluid and mineral-slurry research requiring an anionic dispersing polymer.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt performance depends on clay type, salinity, temperature, solids loading, and interactions with other additives.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to coal-water and carbonaceous slurries requiring reduced viscosity at elevated solids concentration.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can improve pumpability by increasing electrostatic repulsion between dispersed particles.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt supports concentrated additive premixes that are subsequently diluted into finished aqueous formulations.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps preserve premix uniformity while reducing the risk of irreversible particle agglomeration.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt serves as a reference dispersant in formulation-development and particle-stability studies.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt allows researchers to investigate adsorption, zeta potential, rheology, sedimentation, and redispersion.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt contributes to comparative studies involving lignosulfonates, polyacrylates, polycarboxylates, and other dispersant classes.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt helps formulators compare cost, compatibility, viscosity reduction, thermal stability, and electrolyte tolerance.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt enables industrial formulations that require strong aqueous dispersion with relatively low foam formation.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt must be validated through application-specific compatibility, storage, performance, safety, and regulatory testing.

DESCRIPTION

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is an anionic aromatic polycondensate containing methyl-substituted naphthalene units, sulfonate groups, methylene bridges, and sodium counterions.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt is a polymeric distribution rather than one discrete low-molecular-weight chemical compound.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt has no single exact molecular weight because the number of condensed aromatic units varies throughout the material.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt can be represented by a generalized repeating composition such as (C₁₁H₁₀O₃S·CH₂O)ₓ·xNa.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is commonly produced by sulfonating a methyl naphthalene-containing aromatic fraction.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt is subsequently condensed with formaldehyde, neutralized with a sodium base, purified, concentrated, and dried or standardized as a solution.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt commonly appears as a brown to dark-brown powder, granule, flake, paste, or aqueous liquid.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt appearance depends on aromatic feedstock, condensation conditions, active content, moisture, and residual inorganic salts.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is readily soluble or dispersible in water for properly manufactured commercial grades.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt generally has limited compatibility with nonpolar hydrocarbon media unless an aqueous or emulsified phase is present.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt develops a negative charge in water through dissociation of sodium sulfonate groups.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt adsorbs onto many positively charged or partially polar particle surfaces through aromatic and ionic interactions.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt increases electrostatic repulsion between neighboring dispersed particles.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt consequently reduces flocculation, lowers apparent slurry viscosity, and improves redispersion.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt can also provide limited steric stabilization through the adsorbed polymeric aromatic layer.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt performance depends on sufficient surface coverage without excessive free dispersant remaining in the liquid phase.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt is generally described as a low-foaming or non-foaming dispersant relative to many conventional surfactants.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt foam behavior still depends on impurities, agitation, water quality, co-surfactants, and formulation composition.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt can retain dispersing performance across a useful range of acidic, alkaline, hard-water, and electrolyte-containing conditions.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt compatibility must nevertheless be tested because multivalent ions and highly concentrated salts can alter adsorption or solubility.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt commonly provides useful thermal stability during dye processing and other heated aqueous operations.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt should still be protected from severe overheating, combustion, and prolonged exposure outside validated processing conditions.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt quality is commonly evaluated through active matter, moisture, sodium sulfate, pH, water-insoluble matter, dispersing strength, and heat resistance.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt acceptance values depend on whether the material is intended for dyes, agrochemicals, construction, ceramics, or another industrial field.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt may be associated with CAS Number 81065-51-2 when defined as methyl naphthalenesulfonic acid polymerized with formaldehyde and converted to the sodium salt.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt should not automatically be treated as identical to related CAS Numbers 9008-64-4 or 68425-94-5 without reviewing the complete regulatory identity.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt remains stable when stored dry and protected from contamination under recommended conditions.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt powder can absorb atmospheric moisture and may cake when packaging is left open in humid environments.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt can generate airborne dust during pouring, pneumatic transfer, milling, or bag emptying.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt dust and concentrated solutions should be prevented from contacting the eyes because serious eye effects are reported for some notified compositions.

Condensed Methyl Naphthalene Sulfonate, Sodium Salt should not be released into drains or surface waters in uncontrolled quantities.
Condensed Methyl Naphthalene Sulfonate, Sodium Salt environmental behavior depends on molecular-weight distribution, adsorption to solids, biodegradation, and the complete formulation.

PROPERTIES

Chemical Name: Condensed Methyl Naphthalene Sulfonate, Sodium Salt

Chemical Description: Sodium Salt of a Formaldehyde-Condensed Methyl Naphthalene Sulfonic Acid Polymer

Chemical Class: Sulfonated Aromatic Polycondensate

Surfactant Class: Anionic Polymeric Dispersant

Substance Type: Polymeric or UVCB-Type Composition

CAS Number: 81065-51-2

EC Number: 617-192-2

DSSTox Substance ID: DTXSID00108419

Related CAS Number: 9008-64-4

Related EC Number: 618-442-3

Related UVCB CAS Number: 68425-94-5

Related UVCB EC Number: 614-476-8

Molecular Formula: Variable

Representative Formula: (C₁₁H₁₀O₃S·CH₂O)ₓ·xNa

Molecular Weight: Variable

Polymer Backbone: Methylene-Bridged Methyl Naphthalene Units

Ionic Group: Sodium Sulfonate

Counterion: Sodium

Ionic Character: Strongly Anionic in Water

Physical State: Powder, Granule, Flake, Paste, or Aqueous Solution

Typical Powder Appearance: Brown to Dark-Brown Powder

Odor: Mild Characteristic Aromatic Odor or Nearly Odorless

Water Solubility: Readily Soluble or Dispersible

Hydrocarbon Solubility: Generally Low

Polar Organic Solvent Compatibility: Limited and Solvent Dependent

Typical Powder Active Matter: Commonly Approximately 85–95%, Grade Dependent

Representative High-Active Powder Content: At Least Approximately 90–93%, Grade Dependent

Typical Sodium Sulfate Content: Commonly Controlled below Approximately 5–10%, Grade Dependent

Moisture Content: Grade and Packaging Dependent

pH: Commonly Near Neutral to Mildly Alkaline in Dilute Aqueous Solution

Bulk Density: Grade, Particle Size, and Moisture Dependent

Foam Formation: Low Relative to Many Conventional Surfactants

Primary Function: Dispersing Agent

Secondary Functions: Deflocculant, Suspension Stabilizer, Grinding Aid, Wetting Support, Binder, and Viscosity Reducer

Dispersion Mechanism: Particle-Surface Adsorption and Electrostatic Repulsion

Steric Contribution: Limited Polymeric Surface Stabilization

Pigment Compatibility: Broad but Formulation Dependent

Dye Compatibility: Particularly Suitable for Many Disperse and Vat Dye Systems

Hard-Water Tolerance: Generally Good

Acid Tolerance: Generally Good within Formulation-Specific Limits

Alkali Tolerance: Generally Good within Formulation-Specific Limits

Electrolyte Tolerance: Generally Good but Concentration Dependent

Thermal Stability: Suitable for Many Heated Aqueous Dyeing and Processing Systems

Concrete Function: Cement Dispersion and Water-Reduction Support

Ceramic Function: Slurry Deflocculation and Solids-Loading Improvement

Agrochemical Function: Dispersion and Binding in Wettable Powders, Suspension Concentrates, and Water-Dispersible Granules

Textile Function: Dye Grinding, Standardization, Dispersion, and Bath Stabilization

Pigment Function: Milling-Viscosity Reduction and Anti-Flocculation

Rubber Function: Latex and Particulate Dispersion Support

Leather Function: Distribution of Dyes and Processing Auxiliaries

Representative Quality Tests: Active Matter, Moisture, Sodium Sulfate, pH, Insoluble Matter, Dispersing Strength, and Heat Resistance

Residual Formaldehyde: Must Follow the Applicable Grade Specification

Residual Aromatic Components: Must Follow the Applicable Grade Specification

Volatility: Low under Normal Conditions

Dust Formation: Possible during Dry Handling

Combustibility: Organic Content Can Decompose or Burn under Severe Fire Conditions

Thermal Decomposition Products: Carbon Oxides, Sulfur Oxides, Sodium-Containing Residues, and Irritating Fumes

Common Hazard Concern: Serious Eye Damage or Irritation May Apply to Concentrated Grades

Skin Effects: Prolonged or Repeated Contact May Cause Irritation

Inhalation Effects: Dust May Irritate the Respiratory Tract

Chemical Stability: Stable under Recommended Storage Conditions

Incompatible Materials: Strong Oxidizing Agents and Strongly Reactive Chemicals

Storage Conditions: Cool, Dry, Tightly Closed, and Protected from Moisture and Contamination

Shelf Life: Grade, Packaging, and Storage Condition Dependent

FIRST AID

Inhalation: Move the person exposed to Condensed Methyl Naphthalene Sulfonate, Sodium Salt dust or aerosol into fresh air.
Obtain medical attention if Condensed Methyl Naphthalene Sulfonate, Sodium Salt exposure causes persistent coughing, irritation, wheezing, or breathing difficulty.

Skin Contact: Remove clothing contaminated with Condensed Methyl Naphthalene Sulfonate, Sodium Salt and wash the affected skin thoroughly with soap and water.
Obtain medical advice if Condensed Methyl Naphthalene Sulfonate, Sodium Salt causes persistent redness, dryness, itching, or irritation.

Eye Contact: Immediately rinse eyes exposed to Condensed Methyl Naphthalene Sulfonate, Sodium Salt with clean running water for at least 15 minutes while holding the eyelids open.
Remove contact lenses when easy to do, continue rinsing, and obtain urgent medical attention because concentrated Condensed Methyl Naphthalene Sulfonate, Sodium Salt may cause serious eye damage.

Ingestion: Rinse the mouth thoroughly after accidental ingestion of Condensed Methyl Naphthalene Sulfonate, Sodium Salt and do not induce vomiting unless instructed by medical personnel.
Contact a physician or poison information center after significant Condensed Methyl Naphthalene Sulfonate, Sodium Salt ingestion or whenever symptoms develop.

Note to Physicians: Treat Condensed Methyl Naphthalene Sulfonate, Sodium Salt exposure symptomatically and provide supportive care.
Assess Condensed Methyl Naphthalene Sulfonate, Sodium Salt exposure according to physical form, concentration, impurities, accompanying ingredients, quantity, and route of exposure.

HANDLING AND STORAGE

Handling: Handle Condensed Methyl Naphthalene Sulfonate, Sodium Salt according to good industrial hygiene and dry-powder or liquid-chemical processing practices.
Avoid generating Condensed Methyl Naphthalene Sulfonate, Sodium Salt dust or aerosol and prevent unnecessary contact with the eyes, skin, clothing, and breathing zone.

Ventilation: Provide effective general ventilation and local exhaust wherever Condensed Methyl Naphthalene Sulfonate, Sodium Salt is weighed, transferred, charged, milled, sprayed, or mixed.
Use suitable respiratory protection when engineering controls cannot adequately control airborne Condensed Methyl Naphthalene Sulfonate, Sodium Salt dust or aerosol.

Storage: Store Condensed Methyl Naphthalene Sulfonate, Sodium Salt in tightly closed and moisture-resistant containers within a cool, dry, and well-ventilated area.
Protect Condensed Methyl Naphthalene Sulfonate, Sodium Salt from humidity, excessive heat, strong oxidizing agents, damaged packaging, and incompatible contamination.

Spill and Leak Procedures: Avoid raising Condensed Methyl Naphthalene Sulfonate, Sodium Salt dust and collect dry material using a suitable low-dust vacuum or mechanical method.
Prevent Condensed Methyl Naphthalene Sulfonate, Sodium Salt from entering drains or surface water and transfer recovered material into labeled recovery or disposal containers.

Handling Precautions: Wear chemical-resistant gloves, protective clothing, and tightly fitting safety goggles while handling Condensed Methyl Naphthalene Sulfonate, Sodium Salt.
Review the current grade-specific Safety Data Sheet and certificate of analysis before commercial Condensed Methyl Naphthalene Sulfonate, Sodium Salt processing.