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Supragil MNS/90 is a polymeric anionic dispersing agent based on condensed methyl naphthalene sulfonate sodium salt chemistry.
Supragil MNS/90 is designed primarily for the dispersion and stabilization of finely divided, water-insoluble active ingredients and solids in aqueous formulations.
Supragil MNS/90 is particularly established as a high-performance, low-foaming dispersant for crop-protection formulations, including wettable powders (WP) and water-dispersible granules (WDG).
CAS Number: 81065-51-2
Molecular Formula: (C11H10O3S·CH2O)x·xNa
EINECS Number: 617-192-2
Synonyms: Naphthalenesulfonic acid, methyl-, polymer with formaldehyde, sodium salt; Methyl naphthalene sulfonic acid, polymer with formaldehyde, sodium salt; Sodium methylnaphthalene sulfonate-formaldehyde condensate; Sodium methyl naphthalene sulfonate formaldehyde condensate; Condensed methyl naphthalene sulfonate sodium salt; Polyalkyl naphthalene sulfonate; Formaldehyde-methylnaphthalenesulfonic acid copolymer sodium salt; Methyl naphthalene sulphonic acid polymer with formaldehyde, sodium salt; Supragil MNS 90; Supragil MNS/90. [1][3][4]
Supragil MNS/90 belongs to the family of sulfonated aromatic condensate dispersants.
Supragil MNS/90s molecular architecture contains hydrophobic naphthalene-based units together with strongly hydrophilic sulfonate groups.
This combination gives the material affinity for solid particle surfaces while maintaining strong interaction with the aqueous phase.
Supragil MNS/90 has also been used in suspension-type agrochemical systems where effective wetting, milling and stabilization of suspended particles are required.
The polymeric character is important to the performance of Supragil MNS/90.
Instead of behaving as a simple low-molecular-weight surfactant, the sulfonated aromatic polymer can adsorb onto dispersed particles and modify the interfacial conditions surrounding them.
When Supragil MNS/90 adsorbs onto particles suspended in water, the sulfonate groups provide a negatively charged hydrophilic interface.
The resulting electrostatic repulsion between similarly charged particles helps suppress flocculation and re-agglomeration.
Supragil MNS/90 is especially useful during grinding, dilution and redispersion because freshly generated surfaces have a natural tendency to associate with one another.
Supragil MNS/90 a suitable dispersant limits this interaction and helps preserve the particle-size distribution created during processing.
For agrochemical formulators, this behavior can translate into improved dispersion of hydrophobic active ingredients, better suspension quality after dilution and more reproducible performance of WP and WDG formulations.
Syensqo currently describes Supragil MNS/90 as a polymeric anionic dispersing agent specifically intended for wettable powder and water-dispersible granule agrochemical formulations.
The manufacturer places the product within the alkyl naphthalene sulfonate family and identifies dispersion as its principal function.
Historical Rhodia/Solvay technical information additionally describes Supragil MNS/90 as a high-performance, non-foaming dispersing agent with binding properties and particular relevance to concentrated water-dispersible granules.
The relatively low foaming tendency is significant in practical formulation work.
Excessive foam can interfere with wet milling, mixing, granulation, tank filling and final dilution.
Supragil MNS/90 a dispersant capable of providing particle stabilization without introducing excessive foam is therefore useful in formulations processed under mechanical agitation.
Supragil MNS/90 is readily compatible with water-based processing because the sodium sulfonate functionality gives the polymer strong aqueous affinity.
Legacy manufacturer-derived technical data describe Supragil MNS/90 as soluble in water.
The same technical information reports poor solubility in aromatic hydrocarbons and in several organic solvent systems, which confirms that the material is intended primarily for aqueous rather than solvent-borne formulation technology.
The dispersing performance of Supragil MNS/90 is particularly relevant when active ingredients or fillers possess high surface area.
Fine powders generate a large solid-liquid interface and therefore require sufficient dispersant coverage to prevent particle-particle attraction following grinding or hydration.
In a wettable powder, the formulation must first wet efficiently and subsequently form a sufficiently uniform suspension after addition to water.
Supragil MNS/90 contributes mainly to the dispersion and stabilization stage, helping separated particles remain distributed throughout the aqueous phase.
In a water-dispersible granule, the challenge is more complex.
The dry granule must possess adequate handling strength during manufacturing and transport but must break apart efficiently after entering the spray tank.
Supragil MNS/90 primary particles must then disperse without persistent agglomerates.
Supragil MNS/90 is particularly relevant to this balance because historical manufacturer information describes both dispersing and binding properties, with specific suitability for concentrated WG/WDG formulations.
Supragil MNS/90 has been used as an alkyl naphthalene sulfonate-formaldehyde condensate dispersant in aqueous pesticide suspension systems and in formulations subjected to wet grinding to micron-scale active-ingredient particle sizes.
Supragil MNS/90s function in these systems should not be confused with that of every other formulation additive.
A formulation may simultaneously contain wetting agents, rheology modifiers, antifoams, emulsifiers, suspending agents and other dispersants.
Supragil MNS/90 is selected principally to improve solid-particle dispersion and stabilization.
Because formulation performance depends on the complete additive package, the optimum concentration of Supragil MNS/90 cannot be specified universally.
Required dosage depends on active-ingredient chemistry, particle size, specific surface area, formulation solids content, electrolyte concentration, water hardness, pH, milling process and the presence of other surfactants or polymers.
For this reason, dosage should be determined by formulation trials rather than by transferring a fixed percentage from an unrelated formulation.
Published patent examples demonstrate that Supragil MNS/90 can function at relatively low percentages when combined with other formulation auxiliaries.
These examples confirm its practical role but should not be interpreted as universal recommended dosages for every active ingredient.
Ionic Character: Anionic
Physical Form: Powder
Appearance: Fine brown powder
Water Solubility: Soluble in water
Typical Bulk Density: approximately 0.40 g/cm3
Typical pH: 8.0–10.0 for a 5% aqueous solution
Moisture Content: maximum 8.0%
Calcium Sulfate: less than 1.5%
Sodium Sulfate: less than 10%
Flash Point: 100 °C
The values above should be treated as grade-specific technical data rather than universal constants of CAS 81065-51-2.
Supragil MNS/90 specifications should always be confirmed against the applicable Supragil MNS/90 Technical Data Sheet and Certificate of Analysis for the supplied batch.
Supragil MNS/90 has historically been associated with a high-active powder grade.
Industry formulation literature describes Supragil MNS/90 as a brown, water-soluble powder with approximately 90% active material and a moisture content below approximately 8%.
Because commercial specifications can be revised, purchasing specifications should be based on the supplier's current TDS and COA rather than the grade name alone.
Supragil MNS/90 is not characterized by a meaningful single molecular weight in the same way as a small organic molecule.
Polycondensation produces a distribution of chain lengths, and databases therefore commonly leave molecular weight blank or report no defined value.
For the same reason, assigning a single discrete molecular structure, InChI or SMILES string to the entire commercial polymer would be misleading.
The performance of an anionic naphthalene sulfonate condensate is governed by more than chemical identity alone.
Molecular-weight distribution, degree of condensation, sulfonation pattern, inorganic salt content, moisture and manufacturing conditions can influence dispersion behavior.
This distinction is important to formulators and technical purchasers.
Two materials described broadly as “naphthalene sulfonate-formaldehyde condensates” should not automatically be regarded as equivalent grades.
The methyl-substituted naphthalene chemistry of Supragil MNS/90, its polymer distribution and its commercial specification collectively determine its formulation behavior.
Uses
Supragil MNS/90 is primarily used as a dispersing agent in crop-protection formulations.
One of its principal applications is in wettable powders.
In WP formulations, water-insoluble active ingredients are combined with carriers and formulation auxiliaries to produce a powder capable of dispersing after addition to the spray tank.
Supragil MNS/90 helps separate and stabilize solid particles during this dilution process.
Supragil MNS/90 is also particularly suitable for water-dispersible granules.
WDG formulations provide a dust-reduced solid dosage form but must disintegrate and redisperse efficiently in water before application.
Supragil MNS/90 can support the transition from intact granule to a stable aqueous dispersion of the constituent particles.
Historical Solvay/Rhodia product information specifically identifies Supragil MNS/90 for concentrated WG systems and describes the grade as both a dispersant and a material with useful binding properties.
Supragil MNS/90 is also encountered in suspension-type pesticide formulations.
Patent literature identifies Supragil MNS/90 as a sodium alkyl naphthalene sulfonate-formaldehyde condensate used during wet grinding of pesticide active ingredients.
Its presence during particle-size reduction helps control the newly generated surface area and limits undesirable agglomeration.
In suspension concentrates, stable dispersion is critical because the active ingredient remains present as finely divided solid particles rather than being molecularly dissolved.
An effective dispersant therefore contributes to processing efficiency, viscosity control, redispersibility and resistance to particle association.
Supragil MNS/90 has also been used together with other surfactants, viscosity modifiers, suspending agents and antifoams.
This reflects normal formulation practice: complex crop-protection products frequently require multiple additives with complementary functions rather than one multifunctional surfactant performing every task.
Another established application is the manufacture of pesticide granules.
Patent literature describes formulations in which Supragil MNS/90 was blended with mineral carrier material and other surfactants before water addition, extrusion and drying.
This demonstrates its compatibility with solid granulation processes as well as aqueous dispersion systems.
The chemistry of methyl naphthalene sulfonate-formaldehyde condensates also makes this class relevant to aqueous pigment and dye dispersion.
The aromatic portion of the polymer can interact with hydrophobic surfaces while sulfonate groups maintain aqueous compatibility.
This general mechanism is useful where finely divided organic or inorganic particles must remain separated during milling and processing.
In dye-processing systems, related methyl naphthalene sulfonate condensates are used to assist dispersion of disperse and vat dyes and to maintain distribution during processing at elevated temperatures.
However, the current Syensqo positioning of Supragil MNS/90 is specifically centered on crop-protection co-formulant applications.
Accordingly, agrochemical WP and WDG formulations should be regarded as the primary verified current market positioning of the product.
Supragil MNS/90 can therefore be considered for the following formulation functions:
Dispersion of poorly water-soluble agrochemical active ingredients.
Stabilization of finely divided solid particles in aqueous media.
Reduction of particle re-agglomeration following milling.
Support for wettable-powder redispersion.
Support for water-dispersible-granule disintegration and subsequent dispersion.
Supragil MNS/90 use in high-solids WDG formulations.
Wet-grinding processes for suspension formulations.
Combination with complementary wetting agents and surfactants.
Combination with rheology modifiers and suspending agents in complex pesticide formulations.
Use as part of dry carrier and extruded granule systems.
The exact suitability of Supragil MNS/90 should be evaluated with the specific active ingredient and formulation system.
A formulation containing a highly hydrophobic crystalline pesticide, for example, may require a different combination of wetting and dispersing agents from one containing a relatively polar active ingredient.
Water chemistry should also be considered during screening. Electrolytes and dissolved multivalent ions can change the electrostatic environment surrounding dispersed particles and may alter the performance of an anionic dispersant.
Formulators should therefore evaluate not only dispersion in deionized laboratory water but also performance under representative hard-water and electrolyte conditions relevant to the intended market.
Particle-size measurements after milling, suspension stability, wet-sieve residue, spontaneous dispersion, suspensibility, storage stability and redispersion behavior can all provide useful information when evaluating Supragil MNS/90 in a candidate formulation.
For WDG development, granule hardness, attrition resistance, disintegration time, wetting time and dispersion after storage are also important parameters.
The optimum dispersant package is determined by the full formulation rather than one specification value.
For technical purchasing, Supragil MNS/90 should be specified by its trade name together with its verified chemical identity and CAS number.
Supragil MNS/90 a purchasing specification should not substitute CAS 9084-06-4 merely because that CAS number is associated with other naphthalene sulfonate-formaldehyde condensation products.
Supragil MNS/90 corresponds to naphthalenesulfonic acid-formaldehyde polymer sodium salt without the same methylated identity and is listed separately by ECHA.
This distinction is especially important when approving raw materials, preparing regulatory documentation or comparing alternative dispersant grades.
A technical purchaser should request the current Technical Data Sheet, Safety Data Sheet and batch-specific Certificate of Analysis before final approval.
The TDS should be used to confirm characteristics such as appearance, ionic character, pH, moisture content, solubility and other grade specifications.
The SDS should be consulted for current hazard classification, occupational controls, transport information, storage requirements and disposal guidance applicable to the supplied jurisdiction.
The COA should be used to verify the actual batch against the agreed commercial specification.
Where Supragil MNS/90 is being evaluated as a replacement for another dispersant, chemical-family similarity alone is insufficient to establish equivalence.
Comparative laboratory work should include the actual formulation and process conditions because molecular-weight distribution, condensation level, salt content and active concentration can produce meaningful differences between commercial grades.
For regulatory applications, buyers should also confirm the suitability and regulatory status of the supplied grade in the target country and intended crop-protection formulation.
Supragil MNS/90 is included in Health Canada's PMRA formulant listing, providing additional evidence of its established use as a pesticide formulant.
Supragil MNS/90 should be stored in its original, properly closed packaging in a dry location protected from contamination and unnecessary moisture exposure.
Because the product is water soluble and supplied as a powder, humidity control is important for preserving free-flowing handling characteristics.
The material should be protected from incompatible substances and from conditions that can promote contamination or deterioration of the packaging.
Historical manufacturer-derived technical data report a shelf life of approximately 24 months under appropriate storage conditions.
Current supplier documentation should be consulted to confirm the applicable shelf life for each commercial batch and packaging system.
Safety Profile:
Supragil MNS/90 is an industrial chemical and should be handled in accordance with the current Safety Data Sheet supplied with the product.
Historical Solvay safety documentation for Supragil MNS/90 identifies CAS 81065-51-2 as methyl naphthalene sulfonic acid polymer with formaldehyde, sodium salt.
The same SDS documentation has classified the product for significant eye irritation or eye damage depending on the applicable revision and regulatory framework and has included environmental hazard statements relating to aquatic organisms.
Because classification can differ between jurisdictions and SDS revisions, the current regional SDS must take precedence over historical classifications reproduced in databases or older technical literature.
Direct contact with the eyes should be avoided.
Suitable safety glasses or chemical splash protection should be used where exposure to powder is possible.
Normal industrial hygiene practices should be followed during weighing, transfer, mixing and charging operations.
Because Supragil MNS/90 is supplied as a finely divided powder, dust generation should be minimized.
Adequate local exhaust ventilation is appropriate when bulk powder is transferred or processed in a manner that can generate airborne particles.
Historical SDS information additionally warns that finely divided material may form combustible dust-air mixtures under appropriate conditions.
Sources of ignition should therefore be controlled during operations capable of producing significant airborne dust.
Electrostatic charging should also be considered during pneumatic transport, powder transfer and high-volume handling.
Uncontrolled discharge to drains, surface water or the environment should be avoided.
Spilled dry material should be collected in a manner that limits dust generation and prevents unnecessary dispersion into the workplace.
Supply of Supragil MNS/90
Supragil MNS/90 is supplied as a powdered polymeric anionic dispersant for professional formulation applications.
Ataman Kimya can provide further information regarding Supragil MNS/90, including product availability, commercial supply, current technical specifications and documentation such as TDS, SDS and COA where available.
For assistance in evaluating Supragil MNS/90 for a specific crop-protection, dispersion or industrial formulation, please contact Ataman Kimya.
