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, also called sodium polynaphthalene sulfonate, CAS 36290-04-7, is an anionic dispersant supplied for industrial and technical applications. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

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

Dispersing Agent NNO CAS 36290-04-7 is a sodium naphthalene sulfonate formaldehyde condensate, also known as sodium polynaphthalene sulfonate, with repeat-unit formula (C10H7NaO3S)n.(CH2O)n.

Synonyms: Sodium naphthalene sulfonate formaldehyde; Naphthalenesulfonic acid polymer with formaldehyde sodium salt; Sodium polynaphthalene sulfonate; Diffusant NNO; Tamol NNO.

CAS: 36290-04-7.

As a polymer condensate, it is described by its repeat-unit formula rather than a fixed molecular weight.

It appears as a light brown to brown powder or granules.

A 1% aqueous solution usually has a pH around 7.0–9.0.

It dissolves easily in water but remains insoluble in organic solvents.

In textile printing and dyeing it is used as a dispersing and leveling agent for vat, reactive, acid and disperse dyes.

It is a standard excipient for agrochemical wettable powders and water-dispersible granules, improving dispersion of active ingredients.

It is also used as a dispersant in concrete admixtures and selected industrial processes.

Compared with Dispersing Agent MF, NNO is typically based on naphthalene sulfonic acid rather than methyl naphthalene sulfonic acid.

Its anionic character gives good dispersion and stabilizing performance in aqueous systems.

Store in a cool, dry, well-ventilated area in tightly closed containers away from strong oxidizers.

Protect from moisture to prevent caking.

Confirm appearance, pH, moisture, active content and particle size as required.

Use dust masks or respirators and eye protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

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.

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