SUPRAGIL MNS/90

Beyond high-load crop-protection fungicides, herbicides, and insecticides, Supragil MNS/90 serves as a premier grinding and standardizing dispersant for textile disperse and vat dyes, aqueous organic and inorganic pigment masterbatches, synthetic rubber emulsion latices (SBR, NBR, CR), leather auxiliary syntans, and ceramic or gypsum slurries. Available from Ataman Kimya in moisture-barrier 20 kg and 25 kg polyethylene-lined multi-wall bags and palletized bulk shipments, Supragil MNS/90 guarantees consistent CIPAC suspensibility, rapid spontaneous granule bloom, and long-term formulation shelf life.

CAS Number: 81065-51-2 (Naphthalenesulfonic acid, methyl-, polymer with formaldehyde, sodium salt) / 9084-06-4 (Naphthalenesulfonic acid, polymer with formaldehyde, sodium salt) / 68425-94-5 (Sulfonated aromatic methylnaphthalene-formaldehyde condensate sodium salt; Monomeric Reference CAS: 26264-58-4)
EC Number: Polymer (Exempt from EINECS monomer listing under EU REACH Article 2(9); Precursor/Monomer EC Numbers: 617-194-3 / 614-476-8 / 247-564-8)
Molecular Formula: (C11H9NaO3S . CH2)n or C23H22Na2O6S2 (for the representative methylene-bridged dimer unit; oligomeric methylene-linked sodium methylnaphthalene sulfonate polymer with average degree of polymerization n = 2 to 10)
Molecular Weight: Weight-Average Molecular Weight (Mw) approximately 1,500 to 6,000 g/mol (Typically 2,000 to 3,800 g/mol oligomeric polycondensate; Dimer Unit Formula Weight = 512.52 g/mol; Monomer Repeating Unit = 256.25 g/mol)
INCI Name: SODIUM POLYNAPHTHALENESULFONATE (or SODIUM METHYLNAPHTHALENESULFONATE)
E Number: Not Applicable (Agrochemical inert ingredient and industrial anionic dispersant; approved for agricultural crop-protection formulations under US EPA 40 CFR 180.910 / 180.920 / 180.930 and EU REACH Polymer Regulations)
Melting Point: > 250.0 °C to 300.0 °C (> 482.0 °F to 572.0 °F) with gradual thermal charring and decomposition before melting (Thermally stable solid salt across all agrochemical extrusion, fluid-bed drying, and spray-drying temperatures up to 220 °C)
Boiling Point: Not Applicable (Non-volatile ionic polymeric organic salt; decomposes above 280.0 °C to 320.0 °C without boiling)
Viscosity: Not Applicable as a free-flowing spray-dried powder at 20 °C; in a 35% to 40% w/w aqueous solution at 25 °C, dynamic viscosity is approximately 20 to 65 mPa.s (cP), providing strong yield-stress reduction in high-solids pesticide and pigment slurries
Density: True solid density of approximately 1.38 to 1.52 g/cm3 at 20 °C; apparent loose bulk pour density of 420 to 620 kg/m3 (0.42 to 0.62 g/cm3) for spray-dried powder; 40% w/w aqueous solution density is ~1.18 to 1.22 g/cm3 at 20 °C

Most Frequently Encountered Synonyms:
Supragil MNS/90
SUPRAGIL MNS/90
Supragil MNS 90
Supragil MNS-90
WDG / WG / WP / SC Dispersing Agent MNS/90
Morwet D-425 Equivalent
Morwet D-400 Equivalent
Tamol NN 8906 Equivalent
Tamol DN Equivalent
Tersperse 2020 Equivalent
Agnique NSC 9NP Equivalent
Dispersogen AN / LFH Equivalent
Lomar D / Lomar PW Equivalent
Daxad 11G / 19 Equivalent
Vultamol NN Equivalent
CAS 81065-51-2
CAS 9084-06-4
CAS 68425-94-5

PRODUCT OVERVIEW, NOMENCLATURE DECODING AND POLYAROMATIC CHEMICAL ARCHITECTURE

Supragil MNS/90—registered globally under CAS Number 81065-51-2 (Naphthalenesulfonic acid, methyl-, polymer with formaldehyde, sodium salt), as well as class CAS Numbers 9084-06-4 and 68425-94-5—is the flagship high-active (~90 percent nominal active polymer) spray-dried powder grade in the Supragil family of methylated naphthalene sulfonate formaldehyde condensates. Widely recognized across international crop-protection (agrochemical) formulation, disperse and vat dye manufacturing, pigment milling, and rubber latex compounding under its synonyms Supragil MNS 90, Supragil MNS-90, Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, Methyl Naphthalene Sulfonic Acid Polymer with Formaldehyde Sodium Salt, Morwet D-425 / Tersperse 2020 equivalent, and in Turkish chemical trade as Sodyum Metilnaftalin Sülfonat Formaldehit Kondensatı (Supragil MNS/90) or Anyonik Zirai İlaç Dispersantı, this buff-to-light-brown free-flowing powder is supplied by Ataman Kimya for demanding solid and liquid dispersion systems.

Decoding the "Supragil MNS/90" Designation and Comparison with "Supragil MNS/88-E":
Within the globally established Supragil nomenclature (originally developed by Rhodia / Solvay / Syensqo for agrochemical and industrial surfactant systems):
- "Supragil" denotes the specialty range of naphthalene sulfonate wetting and dispersing agents engineered for agricultural pesticide formulations (WP, WG/WDG, SC, SE, FS) and industrial dispersions.
- "MNS" stands for Methyl Naphthalene Sulfonate formaldehyde condensate (sodium salt)—signifying a methylene-bridged oligomeric polycondensate derived from methylated naphthalene feedstocks (alpha- and beta-methylnaphthalenes, C11H10) rather than unsubstituted naphthalene.
- "90" designates the high active polymer grade containing approximately 88 percent to 92 percent w/w (nominal 90 percent on a dry basis) of active sodium methylnaphthalene sulfonate formaldehyde condensate, with low inorganic sodium sulfate salt (Na2SO4 <= 5.0 percent to 8.0 percent w/w) and low moisture (<= 4.0 percent to 5.0 percent w/w), supplied as a fine, rapid-dissolving spray-dried powder.
- Relationship Between Supragil MNS/90 and Supragil MNS/88-E: Both Supragil MNS/90 and Supragil MNS/88-E share the exact same core CAS 81065-51-2 sodium methylnaphthalene sulfonate formaldehyde condensate chemistry. While Supragil MNS/88-E (~88% active) is tailored with an "-E" easy-dispersing/extruded low-dust particle profile, Supragil MNS/90 (~90% active) is the classic high-concentration spray-dried powder benchmark preferred when formulators want maximum active sulfonate polymer per kilogram, minimal inorganic sulfate electrolyte in sensitive Suspension Concentrates (SC) or ultra-high-load (80%–90% AI) Water Dispersible Granules (WG), or co-micronization in air-jet mills for Wettable Powders (WP).

Molecular Structure and Electrosteric Stabilization Mechanism of Supragil MNS/90:
At the molecular level, Supragil MNS/90 consists of linear and lightly branched oligomeric chains containing an average of 3 to 10 methyl-substituted bicyclic naphthalene aromatic rings connected via covalent methylene bridges (-CH2-) at the aromatic 4-, 6-, or 7-positions, with each naphthalene ring functionalized by a strongly hydrophilic sodium sulfonate group (-SO3- Na+) and a lipophilic methyl group (-CH3):
- Why the Methyl Group (-CH3) Is Crucial for Hydrophobic Crystal Anchoring: Standard unsubstituted sodium polynaphthalene sulfonates (SNF / PNS, CAS 9084-06-4, used in concrete admixtures) have relatively polar aromatic rings that desorb easily from non-polar organic pesticide crystals during elevated-temperature storage. By contrast, the methyl substituents (-CH3) on the naphthalene rings of Supragil MNS/90 increase the lipophilicity and polarizability of the planar polyaromatic backbone. This drives strong, irreversible multipoint adsorption onto hydrophobic agrochemical active ingredients (such as triazoles, strobilurins, phenylureas, neonicotinoids, sulfonylureas, dinitroanilines, and dithiocarbamates) as well as hydrophobic organic pigments and disperse dyes via pi-pi electron stacking and van der Waals dispersion forces.
- High Negative Zeta Potential (-45 mV to -65 mV) and pH-Independent Dissociation: Once the methylated naphthalene backbone anchors flat against the crystal surface, the ionized sulfonate groups (-SO3-) extend into the aqueous medium. Because aromatic sulfonic acids are strong acids (pKa < 1.0), Supragil MNS/90 remains 100 percent ionized from pH 1.0 to 14.0, generating an intense electrostatic repulsive barrier combined with oligomeric steric hindrance that prevents particle aggregation, slashes slurry viscosity during wet bead milling, and inhibits Ostwald ripening (crystal growth) during thermal cycling.

Synergy Between Dispersing Agent "Supragil MNS/90" and Wetting Agents ("Supragil WP" / "Supragil RM/210-EI"):
Because Supragil MNS/90 is a condensed polymeric oligomer (Mw ~2,000 to 3,800 g/mol), it adsorbs selectively at the solid-water interface rather than the air-water interface (1% aqueous surface tension is ~58 to 66 mN/m), which gives it the major advantage of near-zero foaming during bead milling and spray-tank mixing. To achieve both instantaneous water wetting (< 15 seconds) and long-term suspensibility (> 90%) in WP and WG formulations, formulators pair 3.0 percent to 10.0 percent w/w of Supragil MNS/90 (primary polymeric dispersant) with 1.5 percent to 3.0 percent w/w of a monomeric dialkylnaphthalene sulfonate wetting agent such as Supragil WP or Supragil RM/210-EI (sodium diisopropylnaphthalene sulfonate, CAS 1322-93-6).

PHYSICAL AND CHEMICAL PROPERTIES AND QUANTITATIVE SPECIFICATIONS

Every commercial lot of Supragil MNS/90 (CAS 81065-51-2 / 9084-06-4) supplied by Ataman Kimya is manufactured under strict ISO 9001 quality control and analytically verified against international CIPAC, ISO, and ASTM test methods:

Quantitative Chemical Composition and Purity Specifications:
- Active Polymer Content (Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate): >= 88.0 percent to 92.0 percent w/w on a dry basis (nominal 90.0 percent active sulfonate polymer; >= 85.0 percent to 88.0 percent as-is including equilibrium moisture).
- Ionic Character: Anionic (Strong polyelectrolyte sulfonate sodium salt, -SO3Na).
- Inorganic Electrolyte — Sodium Sulfate Content (Na2SO4, by Ion Chromatography or Gravimetric Barium Precipitation): <= 5.0 percent to 8.0 percent w/w (typical batch value: 4.5 percent to 6.8 percent w/w; low sulfate prevents electrolyte-induced flocculation in SC flowables).
- Moisture / Water Content (Karl Fischer Titration ISO 4317 or Oven Drying Loss at 105 °C for 2 hours): <= 4.0 percent to 5.0 percent w/w (typical batch value: 2.2 percent to 3.8 percent w/w).
- Water-Insoluble Matter (10% w/w Aqueous Solution Filtered through 45-Micron No. 325 Sieve): <= 0.10 percent w/w (typical: 0.02 percent to 0.05 percent w/w, ensuring zero blockage of fine agricultural spray nozzles).
- Residual Free Formaldehyde Content (HPLC / Acetylacetone Method): <= 0.05 percent to 0.10 percent w/w (< 500 to 1,000 ppm).
- Chloride Content (as NaCl): <= 0.15 percent w/w.

Physical, Surface-Chemical, Rheological, and Thermal Constants:
- Visual Appearance and Odor at 20 °C: Fine, free-flowing light tan, buff, or yellowish-brown spray-dried powder with a mild characteristic aromatic note.
- pH of Aqueous Solution (5% or 10% w/w in Distilled Water at 25 °C, ISO 4316 / CIPAC MT 75.3): 7.5 to 10.0 (typical commercial batch range: 8.2 to 9.5).
- Apparent Loose Bulk Density (ISO 697): 420 to 620 kg/m3 (0.42 to 0.62 g/cm3, typically 460 to 560 g/L).
- Particle Size Distribution (Laser Diffraction / Air-Jet Sieve): >= 98.0 percent passing 150-micron (100 mesh) to 250-micron (60 mesh) screen; mean particle diameter d50 ~45 to 85 microns (ideal for rapid dry blending and co-micronization in air-jet mills).
- Water Solubility at 20 °C to 25 °C: >= 450 to 550 g/L (45% to 55% w/w), dissolving rapidly in cold or warm water to form a clear amber-brown low-viscosity liquid.
- Surface Tension (1.0% w/w Aqueous Solution at 25 °C, ISO 304): 58.0 to 66.0 mN/m (dynes/cm).
- Ross-Miles Foam Height (ASTM D1173 / CIPAC MT 47.2, 0.2% w/w in 342 ppm Hard Water at 25 °C): Initial foam height <= 10 to 20 mm; persistent foam after 1 minute <= 0 to 5 mm (virtually non-foaming).
- Hard-Water and Electrolyte Stability (CIPAC MT 41): Completely clear and stable in CIPAC Standard Waters A (20 ppm), D (342 ppm CaCO3), and C (500 ppm CaCO3), tolerating > 1,000 ppm Ca2+/Mg2+ hardness without precipitation.
- Cloud Point: None up to > 100 °C (retains 100% dispersing power in boiling water and during high-temperature 130 °C pressure dyeing).
- Thermal Stability (Thermogravimetric Analysis, TGA): Thermally stable without loss of sulfonate functionality up to 230 °C to 250 °C; Charring/Decomposition Onset > 280 °C; Sulfated Ash at 750 °C: ~28 percent to 33 percent w/w.

INDUSTRIAL MANUFACTURING PROCESS: SULFONATION, CONDENSATION, DESALTING AND SPRAY DRYING

The manufacture of high-active Supragil MNS/90 (CAS 81065-51-2) follows a four-stage chemical process specifically optimized to maximize active polymer content (~90%) and minimize residual sodium sulfate salt:

Step 1 - High-Temperature Beta-Selective Sulfonation of Methylnaphthalene:
Purified methylnaphthalene (a mixture of 1-methyl- and 2-methylnaphthalene, C11H10) is reacted with concentrated sulfuric acid (98% H2SO4) or oleum at 140 °C to 160 °C in an agitated glass-lined or Hastelloy reactor. Operating at 140 °C to 160 °C ensures thermodynamic regioselectivity, directing the sulfonic acid group (-SO3H) onto the sterically accessible beta-carbon positions of the methylated naphthalene ring (predominantly 6-methylnaphthalene-2-sulfonic acid) while minimizing sulfone byproduct formation.

Step 2 - Controlled Formaldehyde Polycondensation (Methylene Bridge Formation):
The methylnaphthalene sulfonic acid reaction mass is cooled to 90 °C to 105 °C, diluted with a controlled volume of water, and reacted with aqueous formaldehyde (37% HCHO, at a molar ratio of 0.82 to 0.94 moles HCHO per mole of aromatic sulfonic acid) at 105 °C to 125 °C under slight pressure for 4 to 8 hours. Protonated formaldehyde executes electrophilic aromatic substitution across the aromatic rings, linking 3 to 10 methylnaphthalene sulfonic acid units via durable methylene bridges (-CH2-) to reach an optimal weight-average molecular weight (Mw) of 2,000 to 3,800 g/mol, followed by vacuum/steam stripping to remove trace unreacted formaldehyde.

Step 3 - Lime-Soda Desalting (Gypsum Precipitation) and Caustic Neutralization to 90% Purity:
To achieve the high ~90 percent active polymer purity of Supragil MNS/90 (compared to standard unpurified condensates that contain 15%–20% Na2SO4), excess unreacted sulfuric acid in the acidic polycondensate is first reacted with calcium hydroxide (slaked lime, Ca(OH)2) to precipitate insoluble calcium sulfate dihydrate (gypsum, CaSO4.2H2O), which is removed by pressure filtration, while the polymer is neutralized to pH 8.0 to 9.5 with aqueous sodium hydroxide (NaOH) and sodium carbonate. This desalting step drives residual sodium sulfate down below 5.0 percent to 8.0 percent w/w.

Step 4 - High-Tower Atomization Spray Drying:
The purified 45 percent to 50 percent aqueous solution is atomized through a high-speed rotary disc or high-pressure nozzle at the top of a co-current spray-drying tower (inlet air temperature 185 °C to 220 °C, outlet temperature 85 °C to 95 °C), yielding hollow, thin-walled, rapidly soluble buff-colored spherical powder particles of Supragil MNS/90 with moisture <= 4.0 percent w/w.

COMPREHENSIVE AGROCHEMICAL AND INDUSTRIAL APPLICATIONS AND FORMULATION ENGINEERING

Thanks to its 90 percent active polymer concentration, low inorganic salt content, high negative zeta potential, and thermal stability, Supragil MNS/90 supplied by Ataman Kimya is utilized across seven major industrial sectors:

 High-Load Water Dispersible Granules (WG / WDG — 70% to 90% Active Ingredient Formulations):
In ultra-high-load WDG crop-protection products—such as Atrazine 90% WG, Diuron 80% WG, Sulfur 80% WG, Mancozeb 75% WG, Captan 80% WG, Tebuconazole 80% WG, Imidacloprid 70% WG, Thiamethoxam 75% WG, and Azoxystrobin 50% WG—every percentage point of inert space in the recipe is precious:
- Why 90% Active Supragil MNS/90 Is Preferred: Because Supragil MNS/90 delivers ~90 percent active dispersing polymer with minimal dead-weight sodium sulfate, formulators can achieve complete crystal stabilization and >= 90 percent to 98 percent CIPAC MT 184 suspensibility at 4.0 percent to 10.0 percent w/w dosage.
- Spontaneous Granule Disintegration ("Bloom"): During low-pressure basket extrusion, pan granulation, fluid-bed spray granulation, or high-tower spray drying, Supragil MNS/90 forms a hard, non-sticky water-soluble glassy matrix around the micronized pesticide particles (d50 = 2 to 5 microns). Upon dilution in cold or hard field water (342 ppm to 500 ppm CaCO3), Supragil MNS/90 dissolves instantaneously and generates strong electrostatic repulsion that bursts the granule apart in 10 to 25 seconds.

 Wettable Powders (WP — Air-Jet Micronized Fungicides, Herbicides, and Insecticides):
- Dosage & Co-Milling Efficiency (3.0% to 8.0% w/w): Pre-blended with technical solid active ingredients, kaolin/silica fillers, and 1.5 percent to 3.0 percent w/w of a monomeric alkylnaphthalene sulfonate wetting agent (Supragil WP or Supragil RM/210-EI) prior to fluid-energy air-jet milling. The fine spray-dried particle size of Supragil MNS/90 distributes uniformly onto newly cleaved crystal surfaces inside the jet mill, preventing hydrophobic reagglomeration, eliminating mill wall build-up, and preserving >= 85 percent to 95 percent suspensibility after 54 °C CIPAC accelerated storage.

 Aqueous Suspension Concentrates (SC), Suspo-Emulsions (SE), and Flowable Seed Treatments (FS):
- Low-Electrolyte Advantage in SC Mill-Bases (1.5% to 4.5% w/w): In aqueous Suspension Concentrates (400 to 600 g/L SC) and Flowable Seed Treatments (FS), high levels of inorganic sulfate salts can compress the electrical double layer, interfere with xanthan gum or smectite clay rheology modifiers, and trigger Ostwald ripening. Using low-salt, 90% active Supragil MNS/90 at 1.5 percent to 4.5 percent w/w (often paired with 1.5 percent to 2.5 percent w/w of a nonionic EO/PO block copolymer or acrylic graft comb polymer) minimizes ionic strength in the aqueous phase, slashes mill-base viscosity during horizontal zirconia bead milling (enabling d50 < 2.0 microns without foam), and prevents claying or bottom hard-packing over 24 to 36 months.

 Textile Disperse Dyes, Vat Dyes, Sulfur Dyes, and Pigment Dispersions:
Used at 15 percent to 60 percent on dry dye or pigment weight as a primary wet-grinding dispersant, deflocculant, and spray-drying standardization agent for hydrophobic Disperse Dyes (for high-temperature 130 °C polyester dyeing), Vat Dyes, Organic Pigments (Phthalocyanines, Quinacridones, Diarylide Yellows, Azo Reds), and Carbon Black dispersions. Unlike lignosulfonates, Supragil MNS/90 contains zero reducing sugars (preventing azo dye reduction and shade dulling during 130 °C dyeing) and does not stain pale synthetic fibers.

 Emulsion Polymerization, Synthetic Rubber Latex Stabilization, and Latex Curative Dispersions:
Incorporated at 0.5 percent to 2.5 percent w/w in SBR, NBR, polychloroprene (CR), and acrylic emulsion polymerizations to stabilize polymer latex particles against mechanical shear and electrolyte shock, and used at 2.0 percent to 4.0 percent w/w to ball-mill 50%–60% aqueous dispersions of sulfur, zinc oxide, titanium dioxide, antioxidants, and dithiocarbamate/thiazole vulcanization accelerators for dipped latex gloves and foam rubber.

 Leather Tanning (Auxiliary Syntan), Industrial Cleaners, and Mineral Slurries:
Used as a lightfast auxiliary dispersing syntan in chrome and vegetable leather tanning (1.0% to 3.0% on pelt weight), an anti-redeposition soil-suspending agent in heavy-duty alkaline industrial and institutional cleaners, and a water-reducing deflocculant for gypsum wallboard, ceramic slip casting, and refractory oxide slurries.

 Practical Guide Agrochemical Formulation Frameworks Featuring Supragil MNS/90:
- Guide Formulation 1 (Ultra-High-Load Atrazine 90% WG or Diuron 80% WG Extruded Granule): Technical Active Ingredient (97%–98% purity, air-jet milled to d90 < 8 microns) 82.0 percent to 92.0 percent w/w, Supragil MNS/90 (90% High-Active Polymeric Dispersant) 5.0 percent to 6.5 percent w/w, Sodium Diisopropylnaphthalene Sulfonate (Supragil WP / RM/210-EI Wetting Agent) 1.5 percent to 2.0 percent w/w, Sodium Polycarboxylate (Sokalan CP 5 Co-Dispersant/Chelator) 1.0 percent to 2.0 percent w/w, and Ammonium Sulfate / Kaolin Carrier Balance to 100.0 percent w/w.
- Guide Formulation 2 (Azoxystrobin 250 g/L + Tebuconazole 250 g/L SC Suspension Concentrate): Azoxystrobin Technical 23.0 percent w/w, Tebuconazole Technical 23.0 percent w/w, Supragil MNS/90 (Low-Salt Anionic Electrostatic Dispersant) 2.5 percent w/w, Acrylic Graft Copolymer or Tristyrylphenol Ethoxylate Phosphate (Steric Co-Dispersant) 2.5 percent w/w, Propylene Glycol (Antifreeze) 6.0 percent w/w, Polydimethylsiloxane Antifoam 0.3 percent w/w, Xanthan Gum (2% pre-gel) 7.5 percent w/w, Benzisothiazolinone Biocide 0.1 percent w/w, and Deionized Water Balance to 100.0 percent w/w (bead-milled to d50 = 1.8 microns, d90 < 4.5 microns).
- Guide Formulation 3 (Sulfur 80% WP / Copper Oxychloride 85% WP Wettable Powder): Technical Active Ingredient 80.0 percent to 85.0 percent w/w, Supragil MNS/90 (Dispersing & Suspensibility Agent) 4.5 percent w/w, Alkylnaphthalene Sulfonate Wetting Agent 2.0 percent w/w, Precipitated Silica (Flow & Anti-Caking Aid) 2.5 percent w/w, and Kaolin Clay Balance to 100.0 percent w/w.

PACKAGING, STORAGE AND HANDLING GUIDELINES

To maintain the free-flowing spray-dried powder consistency, low moisture content (<= 4.0 percent to 5.0 percent w/w), and rapid cold-water solubility of Supragil MNS/90 (CAS 81065-51-2), warehouse managers and production operators should follow the storage and handling guidelines established by Ataman Kimya:
Commercial Packaging Configurations Supplied by Ataman Kimya:
- 20 kg and 25 kg Net Polyethylene-Lined Multi-Wall Bags: Heavy-duty multi-ply kraft paper or woven polypropylene outer bags fitted with a moisture-barrier low-density polyethylene (LDPE) inner liner (standard palletization: 30 to 40 bags = 600 kg to 1,000 kg net on shrink-wrapped ISPM-15 fumigated pallets).
- 500 kg to 1,000 kg Net Lined Flexible Intermediate Bulk Containers (FIBCs / Big Bags): Available for high-volume agrochemical WDG/WP and textile dye plants.
Storage Conditions, Moisture Protection, and Shelf Life:
1. Dry, Cool, Covered Warehouse Storage (+5 °C to +35 °C / 41 °F to 95 °F): Like all spray-dried 90% active sodium sulfonate powders, Supragil MNS/90 is hygroscopic when exposed to high atmospheric humidity (> 60 percent to 65 percent RH). Store unopened bags in a dry, well-ventilated indoor warehouse away from rain, damp floors, steam lines, and direct sunlight.
2. Re-Sealing Opened Bags: Always twist and seal the inner polyethylene liner bag immediately after partial use to prevent moisture pickup and surface caking. Note that if soft pressure lumps form in bottom bags after prolonged pallet stacking, they break apart easily under light mechanical pressure and retain 100 percent of their chemical dispersing power. Avoid stacking pallets more than two high.
3. Certified Shelf Life: When stored unopened in original moisture-lined packaging under dry warehouse conditions (< 35 °C), Supragil MNS/90 has a certified shelf life of 24 to 36 months (2 to 3 years) from the date of manufacture.

FIRST AID MEASURES, TOXICOLOGY AND SAFETY INFORMATION

Supragil MNS/90 (Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate, CAS 81065-51-2 / 9084-06-4) is a non-volatile, high-molecular-weight anionic surfactant polymer with low acute toxicity. Because of its concentrated anionic surfactant nature and fine spray-dried powder form, direct contact with dry powder or concentrated solutions can cause eye irritation (GHS Eye Irrit. 2, H319) and mild skin or mechanical respiratory tract irritation if airborne dust is inhaled.

Quantitative Toxicological and Ecotoxicological Profile:
- Acute Oral Toxicity (OECD Test Guideline 401): LD50 (Rat, oral) > 2,000 to 5,000 mg/kg body weight (practically low acute oral toxicity).
- Acute Dermal Toxicity (OECD Test Guideline 402): LD50 (Rat/Rabbit, dermal) > 2,000 mg/kg body weight.
- Skin Irritation & Sensitization (OECD 404 / 406): Non-irritating or mildly drying/irritating upon prolonged repeated skin contact; non-sensitizing in guinea pig maximization assays (OECD 406).
- Eye Irritation (OECD 405): Causes moderate reversible conjunctival redness, watering, and burning sensation upon direct powder contact with eyes.
- Aquatic Ecotoxicity: LC50 (Fish, 96 h) > 100 mg/L; EC50 (Daphnia magna, 48 h) > 100 mg/L; low bioaccumulation potential (high-MW water-soluble ionic polymer).

First Aid Measures for Formulation Plant Operators:
- Eye Contact: Immediately flush eyes with plenty of lukewarm low-pressure running water or sterile eyewash saline for at least 15 minutes while holding eyelids wide open. Remove contact lenses if present and easy to do. Obtain medical attention if irritation or redness persists.
- Skin Contact: Brush off dry powder and wash skin thoroughly with mild soap and plenty of water. Remove contaminated clothing and wash before reuse.
- Inhalation: If fine powder dust is inhaled during bag dumping or milling, move the exposed person into fresh air, blow nose gently, and rinse mouth and throat with water. Seek medical attention if coughing or throat discomfort persists.
- Ingestion: Rinse mouth thoroughly with water and drink 1 to 2 glasses of water if conscious. Do not induce vomiting unless directed by medical personnel. Seek medical advice if symptoms develop.

Personal Protective Equipment (PPE), Dust Control, and Fire-Fighting Measures:
- Workplace PPE & Ventilation: Provide local exhaust dust extraction at bag-dumping stations and mills. Operators should wear tightly fitting chemical safety goggles (EN 166), nitrile or rubber gloves (EN 374), long-sleeved coveralls, and a P2 / N95 particulate respirator (EN 149) when handling dry powder.
- Fire-Fighting Measures: Non-flammable solid under normal conditions; avoid creating high-density airborne dust clouds near open sparks or electrostatic discharges (ground pneumatic conveying lines and dust collectors). Extinguish fires using water fog/spray, alcohol-resistant foam, dry chemical powder (ABC), or CO2. Thermal decomposition above 280 °C emits carbon oxides (CO, CO2) and sulfur oxides (SOx); firefighters must wear self-contained breathing apparatus (SCBA).
- Spill Cleanup: Vacuum spilled powder using an industrial HEPA vacuum cleaner or damp-sweep into labeled waste drums (avoid dry sweeping that raises airborne dust), then wash residual traces with water (wet residues on smooth floors are slippery).

REGULATORY STATUS, AGROCHEMICAL INERT APPROVALS AND INTERNATIONAL CLASSIFICATIONS

Supragil MNS/90 (CAS 81065-51-2 / 9084-06-4 / 68425-94-5) complies with global regulatory standards for agricultural crop protection and industrial chemical manufacturing:

1. United States EPA Inert Ingredient Clearances (Title 40 CFR Part 180):
Approved by the U.S. Environmental Protection Agency (US EPA) as an unlimited Inert Ingredient (Dispersant / Surfactant) exempted from residue tolerance requirements under 40 CFR 180.910 (Pre- and post-harvest applications to growing crops and raw agricultural commodities), 40 CFR 180.920 (Pre-harvest applications), and 40 CFR 180.930 (Animal applications) within the sodium alkylnaphthalene sulfonate formaldehyde condensate listing.

2. European Union REACH and Plant Protection Regulation (EC) No 1107/2009:
- EU REACH Regulation (EC) No 1907/2006: Exempt from polymer registration under REACH Article 2(9) as a compliant polymer, with all starting monomers registered.
- EU Regulation (EC) No 1107/2009 Annex III Co-Formulant Compliance: 100 percent free of nonylphenol ethoxylates (NPEO/APEO-free), ortho-phthalates, and SVHCs, with residual free formaldehyde controlled below 0.05 percent to 0.10 percent w/w in full compliance with European Union and Turkish plant protection co-formulant regulations.

3. Global Chemical Inventories and Transport Classification:
- Global Chemical Inventories: Listed on US TSCA (Active, CAS 81065-51-2 / 9084-06-4 / 68425-94-5), Canada DSL, Australia AIIC, China IECSC, Japan ENCS (8-219 / 7-1228), South Korea KECI, Philippines PICCS, and New Zealand NZIoC.
- International Transport Classification (ADR / RID / IMDG / IATA): Not Regulated as Dangerous Goods across road, rail, sea, or air transport (UN Number: Not Regulated; Hazard Class: None; Packing Group: None; Marine Pollutant: No; Customs HS Code: 3402.39 / 3402.49 / 3824.40).

FREQUENTLY ASKED QUESTIONS (FAQ)

 What is Supragil MNS/90 and how does it function as an anionic dispersing agent?
Supragil MNS/90 (CAS 81065-51-2 / 9084-06-4) is a high-active (~90 percent nominal active polymer) spray-dried anionic dispersing agent composed of the sodium salt of methylnaphthalene sulfonic acid condensed with formaldehyde. Its oligomeric chains (Mw ~2,000 to 3,800 g/mol) feature planar methylated naphthalene rings linked by methylene bridges (-CH2-) and ionized sodium sulfonate groups (-SO3Na). In aqueous suspensions, the lipophilic methylnaphthalene rings anchor tightly onto hydrophobic pesticide crystals or pigment particles via pi-pi interactions, while the dissociated sulfonate groups establish a strong negative zeta potential (-45 to -65 mV) that repels particles and prevents flocculation.

 What is the difference between Supragil MNS/90 and Supragil MNS/88-E?
Both Supragil MNS/90 and Supragil MNS/88-E are based on the exact same Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate chemistry (CAS 81065-51-2). Supragil MNS/90 is the classic high-concentration (~90 percent active polymer, low sodium sulfate <= 5%–8%) fine spray-dried powder preferred for ultra-high-load WDG (80%–90% AI), low-electrolyte Suspension Concentrates (SC), and co-micronization in air-jet mills for Wettable Powders (WP). Supragil MNS/88-E (~88 percent active polymer) is the "-E" easy-dispersing / low-dust micro-granular counterpart designed for reduced dusting during manual hopper charging.

 Why is Supragil MNS/90 superior to unsubstituted Sodium Naphthalene Sulfonate Condensate (SNF) in agrochemicals?
Unsubstituted sodium naphthalene sulfonate formaldehyde condensates (SNF, used mainly as concrete superplasticizers) lack methyl groups on the aromatic ring and typically contain 15 percent to 20 percent sodium sulfate salt. By contrast, the methyl substituents (-CH3) on the naphthalene rings of Supragil MNS/90 significantly increase hydrophobic affinity for non-polar organic pesticide crystals and pigments, preventing surfactant desorption and crystal growth (Ostwald ripening) during 54 °C CIPAC accelerated storage, while its low sulfate content (<= 5%–8%) prevents electrolyte-induced thickening in SC flowables.

 Can Supragil MNS/90 be used alone in WP and WDG formulations, or does it require a wetting agent?
Because Supragil MNS/90 is a condensed polymeric dispersant, it adsorbs primarily at the solid-liquid interface rather than the air-water interface (1% surface tension is ~60 mN/m), which is why it generates almost zero foam. However, to make dry WP powders or WDG granules sink and wet rapidly (< 15 to 30 seconds) when poured into a spray tank, Supragil MNS/90 (dosed at 3.0% to 10.0% w/w as the primary dispersant) should always be paired with 1.5% to 3.0% w/w of a monomeric alkylnaphthalene sulfonate wetting agent such as Supragil WP or Supragil RM/210-EI (sodium diisopropylnaphthalene sulfonate).

 What are the recommended dosage rates of Supragil MNS/90 in WDG, WP, SC, and Disperse Dye formulations?
In Water Dispersible Granules (WG / WDG), Supragil MNS/90 is dosed at 4.0 percent to 10.0 percent w/w (up to 12% in 85%–90% AI granules). In Wettable Powders (WP), it is dosed at 3.0 percent to 7.0 percent w/w prior to air-jet milling. In aqueous Suspension Concentrates (SC) and Suspo-Emulsions (SE), it is incorporated at 1.5 percent to 4.5 percent w/w in the mill-base alongside an EO/PO block copolymer or acrylic comb steric stabilizer. In textile disperse and vat dye wet milling, it is used at 15 percent to 50 percent on dry dyestuff weight.

 Why does Supragil MNS/90 prevent viscosity build-up and foaming during wet bead milling of Suspension Concentrates (SC)?
During high-energy horizontal zirconia bead milling of SC formulations, freshly fractured pesticide crystal surfaces create high yield stress and trap air bubbles if foaming surfactants are present. Supragil MNS/90 adsorbs instantaneously onto the sub-2-micron crystal surfaces to impart a -50 mV electrostatic charge that converts thick pastes into free-flowing Newtonian liquids, while its non-foaming polymeric structure prevents micro-foam entrainment and mill overheating.

 Does Supragil MNS/90 have a thermal Cloud Point, and is it stable during high-temperature extrusion or spray drying?
Unlike ethoxylated nonionic surfactants (which dehydrate and phase-separate at their Cloud Point of 50 °C to 75 °C), ionic Supragil MNS/90 has NO cloud point up to > 100 °C in water and is thermally stable as a solid up to 250 °C. This ensures zero loss of dispersing performance during hot bead milling, WDG basket extrusion (60 °C–90 °C), spray drying (180 °C–220 °C inlet air), or high-temperature polyester textile dyeing (130 °C–140 °C).

 How does Supragil MNS/90 perform in hard agricultural spray water (CIPAC Standard Waters D and C) and extreme pH?
Because the sulfonate group (-SO3Na) is derived from a strong sulfonic acid (pKa < 1.0) and does not form insoluble precipitates with calcium or magnesium ions, Supragil MNS/90 remains 100 percent ionized, soluble, and effective across pH 1.0 to 14.0 and in extreme hard waters exceeding 500 to 1,000 ppm CaCO3 hardness.

 Is Supragil MNS/90 approved by the US EPA for food-crop pesticides and compliant with EU Annex III rules?
Yes, Supragil MNS/90 is approved by the US EPA under 40 CFR 180.910, 180.920, and 180.930 as an inert ingredient for pre- and post-harvest food-crop pesticide formulations with no residue tolerance limit, and is fully compliant with EU Regulation (EC) No 1107/2009 Annex III co-formulant rules (APEO/NPEO-free and free formaldehyde <= 0.05%–0.10%).

 How can agrochemical formulators, dyestuff manufacturers, and industrial buyers source Supragil MNS/90 and request COA, TDS, and SDS documents from Ataman Kimya?
Customers can procure Supragil MNS/90 (CAS 81065-51-2 / 9084-06-4) in moisture-barrier 20 kg and 25 kg polyethylene-lined bags or palletized bulk shipments—supported by batch-specific Certificates of Analysis (COA), Technical Data Sheets (TDS), and GHS/CLP Safety Data Sheets (SDS)—directly from Ataman Kimya by calling +90 216 577 10 10 or emailing info@atamankimya.com.

TECHNICAL SUMMARY

Supragil MNS/90—universally recognized across international agrochemical, dyestuff, pigment, and specialty chemical standards as High-Active Sodium Methylnaphthalene Sulfonate Formaldehyde Condensate (90% Grade), Methyl Naphthalene Sulfonic Acid Polymer with Formaldehyde Sodium Salt, and Sodyum Metilnaftalin Sülfonat Formaldehit Kondensatı (CAS Number 81065-51-2 / 9084-06-4 / 68425-94-5)—stands as the global benchmark high-concentration (~90 percent active polymer), low-salt, non-foaming anionic polymeric dispersing and suspending agent for Water Dispersible Granules (WG / WDG), Wettable Powders (WP), Suspension Concentrates (SC), and disperse dye/pigment milling. Engineered with methylated bicyclic naphthalene rings linked by methylene bridges (Mw ~2,000 to 3,800 g/mol), permanently ionized sulfonate groups (-SO3Na), and reduced sodium sulfate electrolyte (<= 5.0 percent to 8.0 percent w/w), Supragil MNS/90 delivers tenacious pi-pi hydrophobic crystal adsorption, high negative zeta potential (-45 to -65 mV), full stability across pH 1.0 to 14.0 and hard waters (> 500 to 1,000 ppm CaCO3), zero cloud point up to > 100 °C, thermal drying resistance above 250 °C, and full compliance with US EPA 40 CFR 180.910 / 180.920 and EU agrochemical co-formulant standards.

Ataman Kimya supplies premium, free-flowing Supragil MNS/90 spray-dried powder in moisture-barrier 20 kg and 25 kg polyethylene-lined multi-wall bags and palletized bulk quantities for crop-protection manufacturers, textile dye and pigment plants, synthetic rubber latex compounders, and industrial slurry processors, backed by ready warehouse stock in Turkey, strict batch-to-batch analytical verification, and fast domestic and international logistics. To request a commercial quotation, pallet pricing, laboratory formulation samples, Technical Data Sheets (TDS), Safety Data Sheets (SDS), or a batch-specific Certificate of Analysis (COA) for Supragil MNS/90 (CAS 81065-51-2), please contact the technical sales team at Ataman Kimya using the contact details below.

Ataman Chemicals
Phone: +90 216 577 10 10
Email: info@atamankimya.com