What is Dispersing Agent NNO CAS 36290-04-7?

Dispersing Agent NNO is a sodium naphthalene sulfonate formaldehyde condensate, also called sodium polynaphthalene sulfonate. It is an anionic dispersant supplied as a beige to light brown powder and is easily soluble in water.

What is Dispersing Agent NNO mainly used for in textile processing?

In textile printing and dyeing, it is used as a dispersing and leveling agent for vat dyes, reactive dyes, acid dyes, and disperse dye preparations. It helps keep dye particles uniformly suspended and prevents precipitation during high-temperature dyeing.

Can Dispersing Agent NNO be used in agrochemical wettable powders and water-dispersible granules?

Yes. It is a standard excipient for pesticide and herbicide formulations such as WP and WDG. It helps active ingredient particles wet out quickly, disperse evenly in water, and remain suspended during spray preparation.

How does Dispersing Agent NNO compare with Dispersing Agent MF?

Both are naphthalene sulfonate condensates, but NNO is typically based on naphthalene sulfonic acid, while MF is based on methyl naphthalene sulfonic acid. NNO is often specified for good heat resistance and broader dye-dispersion performance.

What pH and solubility should be considered when using Dispersing Agent NNO?

A 1% aqueous solution usually has a pH around 7.0-9.0, and the product dissolves easily in water while remaining insoluble in organic solvents. Compatibility and optimal dosage should be checked by jar or formulation testing for the target dye or active ingredient.

Dispersing Agent NNO CAS 36290-04-7

Dispersing Agent NNO CAS 36290-04-7 is a high-performance anionic surfactant chemically defined as the sodium salt of polynaphthalene sulfonic acid formaldehyde condensate , functioning primarily as a powerful dispersing and leveling agent in the textile and agrochemical industries. Distinguished by its excellent diffusion properties and resistance to hard water, acids, and alkalis, this light brown to beige powder is utilized to stabilize suspension concentrates (SC) in pesticide formulations and prevents the agglomeration of vat and disperse dyes during high-temperature dyeing processes. We provide professional access to this material with competitive factory pricing and the ability to meet customized specifications (sulfate content < 5% or < 18%) for various manufacturing requirements. Our commitment to technical transparency ensures that every shipment is accompanied by comprehensive MSDS, TDS, COA documentation to support your quality assurance protocols, and we maintain capacity for consistent bulk supply to facilitate large-scale industrial operations.

CAS: 36290-04-7
Synonyms: Sodium naphthalene sulfonate formaldehyde, Naphthalenesulfonic acid polymer with formaldehyde sodium salt, Sodium polynaphthalene sulfonate, Diffusant NNO, Tamol NNO
Molecular Formula: (C10H7NaO3S)n.(CH2O)n
Grade: Industrial / Technical Grade
Package: 25kg Kraft paper bag with PE liner or 600kg Jumbo Bag.

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Product Description

1 Physicochemical Properties

2 Applications

3 Quality Assurance

4 Storage & Safety

Physicochemical Properties

The following specifications represent our standard export-grade quality, ensuring high solubility and low impurity levels suitable for sensitive formulations.

Property	Specification
Appearance	Beige to Light Brown Powder
Ionic Nature	Anionic
Dispersing Force (Relative to Std.)	≥ 95%
Heat Resistance	Stable at 130°C (Grade 4-5)
pH Value (1% Solution)	7.0 – 9.0
Sulfate Content (as Na₂SO₄)	≤ 5.0% – 18% (Depending on Grade)
Calcium & Magnesium Content	≤ 4000 ppm
Solubility	Easily soluble in water; Insoluble in organic solvents
Moisture Content	≤ 8.0%

Applications

Dispersing Agent NNO is utilized across diverse sectors where particle suspension and stability are paramount.

1. Textile, Printing, and Dyeing This is the primary application for NNO. It acts as a dispersing and leveling agent for Vat Dyes, Reactive Dyes, and Acid Dyes. It ensures uniform color uptake on fabrics and prevents the precipitation of dye particles during the high-temperature dyeing process. It is also used in the preparation of disperse dyes and pad dyeing.

2. Agrochemical Industry In the formulation of pesticides and herbicides (specifically Wettable Powders – WP and Suspension Concentrates – SC), NNO acts as a dual dispersant and wetting agent. It improves the suspension rate of the active ingredient in water, ensuring even coverage on crops and preventing nozzle clogging.

3. Rubber and Polymer Industry Used as a stabilizer in rubber latex and as a dispersing agent in the production of synthetic rubber. It prevents coagulation during the polymerization process.

4. Industrial and R&D Applications

Leather Tanning: Used as a tanning auxiliary to assist in the penetration of tanning agents.
Construction: Functions as a superplasticizer component in early-strength concrete to reduce water demand.
Research: Used in laboratory settings for preparing colloidal suspensions and studying surface tension reduction in aqueous solutions.

Quality Assurance

We understand that consistency is the key to your production line. Our manufacturing facility operates under strict ISO 9001:2015 quality management systems.

Batch Testing: Every lot is tested for dispersibility, pH stability, and sulfate content before release.
Advanced Analysis: We utilize High-Performance Liquid Chromatography (HPLC) and Gel Permeation Chromatography (GPC) to monitor molecular weight distribution, ensuring the condensation level is optimized for maximum dispersing performance.
Traceability: Complete Certificates of Analysis (COA) and batch retention samples are available for up to two years.

For textile dye supply that commonly requires dispersing and leveling aids, see Vat Blue 18.

Storage & Safety

Storage Conditions:

Dispersing Agent NNO is hygroscopic (absorbs moisture). It must be stored in a cool, dry, and well-ventilated warehouse.
Keep containers tightly sealed when not in use.
Shelf life is typically 2 years if stored correctly. Agglomeration (caking) may occur if exposed to moisture, but this does not affect chemical performance, though it may require crushing before use.

Safety Precautions:

Handling: Avoid creating dust. Use in a well-ventilated area.
PPE: Wear a standard dust mask (N95 or equivalent), safety goggles, and protective gloves during handling to prevent skin and eye irritation.
First Aid: In case of contact with eyes, rinse immediately with plenty of water. If inhaled, move to fresh air.
Refer to the Material Safety Data Sheet (MSDS/SDS) for full safety details.

Ready to optimize your formulations? Contact our technical sales team for current pricing, TDS, and sample requests.

📧 Email: info@industrochem.com

FAQ - Technical & Supply Chain

Q:
What is Dispersing Agent NNO CAS 36290-04-7?

A: Dispersing Agent NNO is a sodium naphthalene sulfonate formaldehyde condensate, also called sodium polynaphthalene sulfonate. It is an anionic dispersant supplied as a beige to light brown powder and is easily soluble in water.
Q:
What is Dispersing Agent NNO mainly used for in textile processing?

A: In textile printing and dyeing, it is used as a dispersing and leveling agent for vat dyes, reactive dyes, acid dyes, and disperse dye preparations. It helps keep dye particles uniformly suspended and prevents precipitation during high-temperature dyeing.
Q:
Can Dispersing Agent NNO be used in agrochemical wettable powders and water-dispersible granules?

A: Yes. It is a standard excipient for pesticide and herbicide formulations such as WP and WDG. It helps active ingredient particles wet out quickly, disperse evenly in water, and remain suspended during spray preparation.
Q:
How does Dispersing Agent NNO compare with Dispersing Agent MF?

A: Both are naphthalene sulfonate condensates, but NNO is typically based on naphthalene sulfonic acid, while MF is based on methyl naphthalene sulfonic acid. NNO is often specified for good heat resistance and broader dye-dispersion performance.
Q:
What pH and solubility should be considered when using Dispersing Agent NNO?

A: A 1% aqueous solution usually has a pH around 7.0-9.0, and the product dissolves easily in water while remaining insoluble in organic solvents. Compatibility and optimal dosage should be checked by jar or formulation testing for the target dye or active ingredient.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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