Buyers searching for a Dispersant NNO supplier in China should compare more than a headline purity, an undated price or a generic list of applications. NNO is a polymeric sodium naphthalene sulfonate-formaldehyde condensate, commonly identified by CAS 36290-04-7, and commercial grades can differ in inorganic salt, moisture, insoluble matter and application behaviour. Supplier qualification should connect the offered grade to the buyer’s actual dye, pigment, agrochemical or other formulation.
The authoritative GREEN AGROCHEM product and enquiry page is Dispersant NNO. It provides the current route for grade selection, samples, TDS, SDS, COA, packaging and export quotations. This ChinaLignin page is retained as a procurement checklist for buyers; it is not a substitute for the current technical documents for a specific batch or grade.
Define the application before requesting a quote
A useful request identifies the material to be dispersed, formulation type, water quality, pH and electrolyte conditions, solids level, process temperature, mixing or milling equipment and the test that defines success. For an agrochemical formulation, specify the active ingredient, formulation type and required suspensibility or dispersion method. For dye or pigment processing, identify the colour system and relevant filtration, particle-size, viscosity or shade-control test.
One NNO grade should not be assumed to perform identically across pesticide wettable powders, dye manufacture, pigments, ceramics, leather or concrete. These systems have different surfaces, ionic environments and downstream requirements. Application claims must be verified in the complete formulation.
Documents to request from a China supplier
- Current TDS: confirm grade name, revision date, specification basis and test methods.
- SDS: review classification, handling, storage, exposure controls and transport information for the destination market.
- Representative or batch COA: compare the reported results with the agreed purchasing specification.
- Packaging identification: confirm net weight, inner liner, palletization, labels and moisture protection.
- Traceability: establish batch identification, retained-sample practice and change-notification expectations.
- Export documents: identify the commercial invoice, packing list, origin and other documents required by the buyer and destination.
How to compare specifications
Do not compare a supplier’s “content” or “dispersing power” value until the method and basis are clear. pH must state the solution concentration and method; moisture, inorganic salt and insoluble matter must identify whether the figure is a limit, range or typical result. A number copied from a marketplace listing or another supplier is not the specification for the offered grade.
| Review item | Buyer question |
|---|---|
| Grade identity | Does the quotation, TDS, SDS, label and COA refer to the same product? |
| Test basis | Are units, sample preparation and methods defined? |
| Batch consistency | Which incoming tests and change controls are available? |
| Application evidence | Was performance tested in a relevant formulation under stated conditions? |
| Regulatory scope | Which market and end use were reviewed, and what remains the buyer’s responsibility? |
Sample and trial qualification
- Approve the document set and identify any specification gaps.
- Test a representative sample against the current approved material under identical conditions.
- Ask for the supplier-recommended starting trial range for the exact grade and require a defined calculation basis.
- Bracket the range in laboratory work and measure the agreed formulation endpoints.
- Check storage, dilution, filtration, foam and compatibility effects relevant to the process.
- Confirm the selected grade in a controlled plant trial before routine purchasing.
No universal dosage is stated on this page. A number is defensible only when it is supported by the current document for the exact grade, states its basis and is validated with the buyer’s raw materials, water, process and test method.
Build a comparable commercial quotation
Prices and lead times change with grade, quantity, packaging, raw-material conditions, shipment date and logistics. Instead of relying on an undated online price range, request quotations on the same basis: exact grade, quantity, packaging, currency, Incoterm, destination, documentation and required delivery window. Compare landed cost together with quality risk, not unit price alone.
Include the sample policy, inspection arrangement, payment terms and the procedure for handling an out-of-specification result in the commercial review. Do not assume that a platform badge, certification name or export-country count independently proves fitness for the intended formulation.
Questions for the supplier
- Which grade do you recommend for the stated application, and why?
- Which parameters are release specifications and which are typical properties?
- Can you provide a current TDS, SDS and representative COA before sampling?
- What trial method and calculation basis support the proposed starting range?
- What package, pallet and moisture-protection options are available?
- How are batch changes communicated, investigated and documented?
Request technical and commercial review
For a current Dispersant NNO grade recommendation, sample or quotation, use the GREEN AGROCHEM Dispersant NNO product page or email info@greenagrochem.com. Include the application, formulation or process conditions, benchmark, required tests, estimated quantity, packaging and destination.
