NAPHTHALENESULFONIC ACID, METHYL-, SODIUM SALT

Naphthalenesulfonic acid, methyl-, sodium salt is known for its strong affinity with protein fibers and polyamide, while showing little or no affinity to cotton and other cellulose-based fibers.
Naphthalenesulfonic acid, methyl-, sodium salt condensed with formaldehyde. 
Naphthalenesulfonic acid, methyl-, sodium salt is polymerized with formaldehyde (CH2O) under acidic conditions.

CAS Number: 9008-64-4
Molecular Formula: (C11H10O3S.CH2O.Na)x

Synonyms: Naphthalenesulfonic acid, methyl-, sodium salt (1:1), polymer with formaldehyde, 618-442-3 DTXSID10107877, RefChem:831932, 9008-64-4, Naphthalenesulfonic acid, methyl-, sodium salt, polymer with formaldehyde;Formaldehyde, naphthalenesulfonic acid, methyl, sodium salt

Naphthalenesulfonic acid, methyl-, sodium salt reaction creates Naphthalenesulfonic acid, methyl-, sodium salt, a polymer with methylene (–CH2–) bridges linking naphthalene units.
The resulting polymer is neutralized with sodium hydroxide (NaOH), converting the sulfonic acid groups into their sodium salt form (–SO3Na).
The final product is SNF, which is dried into a powder or diluted into a liquid solution for commercial use.

Naphthalenesulfonic acid, methyl-, sodium salt exhibits high chemical stability over a wide range of pH values and temperatures.
This stability allows it to maintain dispersing efficiency under harsh processing and application conditions.
Its anionic nature ensures strong electrostatic repulsion between particles, preventing aggregation.

The polymeric structure provides effective adsorption onto the surface of inorganic and organic solids.
Once adsorbed, the sulfonate groups extend into the surrounding medium and enhance steric and electrostatic stabilization.
This mechanism improves flowability, homogeneity, and long-term storage stability of suspensions.

In industrial applications, the compound is valued for its compatibility with a wide range of formulations and additives.
Naphthalenesulfonic acid, methyl-, sodium salt can be blended with other surfactants, binders, and modifiers without significant loss of performance.
These properties make it a versatile dispersant in construction materials, pigments, ceramics, and chemical formulations.

Naphthalenesulfonic acid, methyl-, sodium salt, is a high-performance synthetic polymer widely used as a superplasticizer in the construction industry and as a dispersant in various other industries, including textiles, leather tanning, ceramics, and agriculture. 
Naphthalenesulfonic acid, methyl-, sodium salts ability to reduce water content in concrete while enhancing workability, strength, and durability makes it a critical admixture in modern construction.
Naphthalenesulfonic acid, methyl-, sodium salt is a polymeric anionic surfactant produced by the condensation of methyl-substituted naphthalene sulfonic acid with formaldehyde followed by neutralization with sodium ions.

Naphthalenesulfonic acid, methyl-, sodium salts molecular structure provides both hydrophilic sulfonate groups and hydrophobic aromatic rings, enabling effective dispersion of solid particles.
These characteristics result in strong deflocculating behavior and improved stability of suspensions.
Naphthalenesulfonic acid, methyl-, sodium salt is commonly used as a dispersant in concrete admixtures to improve workability and reduce water demand.

Naphthalenesulfonic acid, methyl-, sodium salt is also applied in textile dyeing and printing to enhance dye dispersion and color uniformity.
Additionally, it is used in agrochemical and pigment formulations to prevent particle agglomeration and sedimentation.
The compound may cause skin and eye irritation upon prolonged or repeated contact.

Inhalation of dust or aerosols can lead to respiratory irritation, especially in industrial environments.
Although generally considered low in acute toxicity, improper disposal may pose environmental risks to aquatic systems due to its surfactant properties.
Its chemical structure consists of a naphthalene backbone with sulfonate groups (–SO3Na) attached, linked by methylene bridges formed during polymerization. 

The general chemical formula is approximately (C10H7SO3Na)n, where n represents the degree of polymerization, typically ranging from 2 to 10. 
The molecular weight varies between 500 and 2500, depending on the condensation level.
The sulfonate groups impart anionic surfactant properties, enabling SNF to effectively disperse particles in aqueous solutions through electrostatic repulsion. 

This makes it particularly effective in applications requiring uniform particle distribution, such as cement or dye suspensions.
Naphthalenesulfonic acid, methyl-, sodium salt is a kind of dispersant with good properties, such as wetting, emulsifying, dispersing. 
Naphthalenesulfonic acid, methyl-, sodium salt is widely used as coating dispersant, dye dispersant, cement water reducer and so on. 

Therefore, the synthesis of naphthalene sulfonic acid formaldehyde condensate and its application performance are of great practical significance. 
In this paper, naphthalene sulfonic acid formaldehyde condensate was synthesized from naphthalene, concentrated sulfuric acid and formaldehyde with the ratio of naphthalene to sulfuric acid approaching 1:2, the condensation temperature ranging from 110~120°C and the condensation time of 5.5 hours. 
The characteristics of groups in products were determined by IR.

Naphthalenesulfonic acid, methyl-, sodium salt is reacted with concentrated sulfuric acid (H2SO4) at elevated temperatures (around 120–160°C).
This forms Naphthalenesulfonic acid, methyl-, sodium salt, with sulfonate groups attaching to the naphthalene ring.
Naphthalenesulfonic acid, methyl-, sodium salt, commonly referred to as sodium naphthalene formaldehyde, is a high-performance chemical compound prized for its versatility across industries, particularly in construction, textiles, and manufacturing. 

Naphthalenesulfonic acid, methyl-, sodium salt, is an anionic surfactant that appears as a yellow-brown to brown powder with high solubility in water and strong resistance to acids, alkalis, hard water, and inorganic salts. 
Naphthalenesulfonic acid, methyl-, sodium salt is characterized by excellent dispersing power, typically ≥95%, and exhibits a pH range of 7.0 to 9.0 in a 1% aqueous solution. 
Naphthalenesulfonic acid, methyl-, sodium salt is non-foaming, non-permeable, and demonstrates good stability under various environmental conditions. 

Naphthalenesulfonic acid, methyl-, sodium salt the resulting material consists of sulfonated aromatic polymer chains that carry strong negative charges in aqueous systems.
Naphthalenesulfonic acid, methyl-, sodium salt typically appears as a brown to dark powder or liquid and is readily soluble in water.
Naphthalenesulfonic acid, methyl-, sodium salt belongs to the family of naphthalene sulfonate formaldehyde condensates, which are widely used as dispersants.

Uses Of Naphthalenesulfonic acid, methyl-, sodium salt:
Naphthalenesulfonic acid, methyl-, sodium salt is used in pesticide and fertilizer formulations as a dispersing and wetting agent.
It improves the uniform distribution of active ingredients and enhances penetration and effectiveness upon application.
Naphthalenesulfonic acid, methyl-, sodium salt improves workability and flow while allowing significant reduction in water content without compromising strength.

Naphthalenesulfonic acid, methyl-, sodium salt results in enhanced mechanical performance and durability of hardened concrete.
The compound is extensively applied in textile dyeing and printing processes as a dispersing agent.
It promotes uniform dye distribution, prevents dye agglomeration, and improves color consistency on fibers.

Naphthalenesulfonic acid, methyl-, sodium salt is a diluent, used for the control of decay in the paper industry, reducing both sides, improving the retention of fillers or fine fibers, improving sizing, and reducing the viscosity of the coating. 
Naphthalenesulfonic acid, methyl-, sodium salt is used as an efficient dispersant for water-based paints and pigment pastes. 
Naphthalenesulfonic acid, methyl-, sodium salt is used as dispersant for color paste in latex paints of acrylic series, aldehyde-propylene series and chlorine partial series. 

This leads to more consistent performance and reduced material loss in agricultural treatments.
The compound is also applied in gypsum, plaster, and building material formulations to control rheology and flow behavior.
It allows high solid loading while maintaining workable viscosity during mixing and application.

These properties help improve surface finish and mechanical consistency of construction products.
In mining and mineral processing, the compound is used as a dispersant for ore slurries and fine mineral suspensions.
Naphthalenesulfonic acid, methyl-, sodium salt reduces particle agglomeration and improves separation efficiency during flotation and washing processes.

This application supports improved yield and process stability in mineral beneficiation operations.
Naphthalenesulfonic acid, methyl-, sodium salt can also be used as adhesives, polymer fillers and sealing layers to improve.
Naphthalenesulfonic acid, methyl-, sodium salt is widely used as a dispersant and plasticizer in concrete and cement-based systems.

These effects contribute to higher-quality textile products and more efficient dye utilization.
In agrochemical, pigment, and ceramic formulations, the compound is used to stabilize suspensions and emulsions.
It prevents sedimentation of solid particles and ensures homogeneous distribution of active components.

This function is essential for maintaining product effectiveness and shelf stability.
Naphthalenesulfonic acid, methyl-, sodium salt is used in pigment and paint formulations to improve dispersion of inorganic and organic colorants.
It enhances color strength, prevents flocculation, and improves coating uniformity on applied surfaces.

These properties contribute to better optical performance and storage stability of paints and coatings.
The compound is also applied in ceramic and refractory processing as a deflocculant.
Naphthalenesulfonic acid, methyl-, sodium salt reduces slurry viscosity while maintaining high solid content, which improves casting and shaping efficiency.

Naphthalenesulfonic acid, methyl-, sodium salt leads to improved surface quality and reduced defects in fired ceramic products.
In chemical and industrial cleaning formulations, the compound functions as a dispersing and soil-suspending agent.

Naphthalenesulfonic acid, methyl-, sodium salt prevents redeposition of removed particles during washing or processing steps.
This role is important for maintaining cleanliness and process efficiency in industrial systems.

Safety Profile Of Naphthalenesulfonic acid, methyl-, sodium salt:
Naphthalenesulfonic acid, methyl-, sodium salt may cause irritation to the skin and eyes upon direct or prolonged contact.
Exposure to concentrated solutions or powders can lead to redness, itching, or discomfort, particularly in sensitive individuals.
Protective gloves and eye protection are recommended during handling.

Inhalation of dust or aerosols may irritate the respiratory tract.
Symptoms can include coughing or throat discomfort, especially in poorly ventilated environments.
Adequate ventilation and dust control measures should be used in industrial settings.

Naphthalenesulfonic acid, methyl-, sodium salt is generally considered to have low acute toxicity but may pose environmental risks if released in large quantities.
As a surfactant, it can affect aquatic organisms by altering surface tension and membrane function.
Proper disposal and wastewater management are important to minimize environmental impact.