Nonionic Polyacrylamide - China Nonionic Polyacrylamide Manufacturers Suppliers Factory

Product Overview

Nonionic Polyacrylamide (NPAM) is a high-molecular-weight, water-soluble synthetic polymer characterized by a non-ionic molecular chain. Unlike anionic or cationic polyacrylamides, NPAM does not carry electrical charges, rendering its performance largely independent of system pH fluctuations and high salt concentrations.

Engineered for solid-liquid separation and bridging flocculation in harsh chemical environments, NPAM operates effectively in acidic, neutral, and high-salinity process streams where ionic polymers suffer from charge neutralization interference. It is supplied as a free-flowing white powder, optimized for municipal and industrial wastewater treatment, paper manufacturing, mineral processing, and enhanced oil recovery.

Nonionic Flocculant
In practical water treatment applications, the most common issue with nonionic polyacrylamide (NPAM) is not “whether it is effective,” but the following key pain points:Changes in water quality (turbidity / organic matter / temperature)
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Neutral Polyacrylamide
In the actual sales and application process of nonionic polyacrylamide (NPAM), the core problems many customers encounter are not insufficient effectiveness, but rather:High chemical dosage, leading to increased overall treatment cost
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Non Ionic Polyacrylamide
In high-requirement water treatment projects (such as environmental acceptance projects and continuous production systems), the common problems of nonionic polyacrylamide are more obvious:Performance degradation during long-term operation
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Nonionic Polyacrylamide for Oilfield
In oilfield applications (drilling, oil production, produced water treatment), the problems many buyers encounter are not “whether there is a flocculation effect,” but rather: Good laboratory results, but unstable performance on site High
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Nonionic Flocculant for Mine
In the mining and mineral processing industry (such as tailings treatment, slurry sedimentation, and ore washing wastewater treatment), common problems include: Fine slurry particles and slow sedimentation, affecting treatment efficiency
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Product Specifications

Technical Parameter	Specification Value	Test Method / Standard
Appearance	Free-flowing white granular powder	Visual inspection
Solid Content (%)	>= 88.0	GB/T 12005.2
Molecular Weight (Million Daltons)	8.0 - 18.0 (Customizable)	Ubbelohde Viscometer
Degree of Hydrolysis (%)	<= 5.0 (Nonionic character)	Titration Method
Dissolution Time (min)	<= 60 (in clean water at 25°C)	Laboratory Stirring Test
Residual Monomer (%)	< 0.05	HPLC
pH Value (0.1% aqueous solution)	6.0 - 8.0	Glass Electrode Method

Key Features

pH Independence:

Retains stable chain conformation and bridging efficiency across broad acidic and neutral pH ranges (pH 2.0 - 7.0).

Salt Tolerance:

High resistance to electrolytes and divalent ions (Ca2+, Mg2+), preventing precipitation in high-TDS industrial effluents.

Rapid Hydration Kinetics:

Formulated with optimized particle size distribution to minimize agglomeration ("fish-eye" formation) during automatic makeup.

Low Residual Acrylamide:

Manufactured via controlled-radical polymerization, ensuring residual monomer levels comply with strict workplace and environmental safety thresholds.

Applications

Acidic Wastewater Treatment:

Flocculation and clarification of effluent streams generated by metal pickling, mining leaching, and chemical synthesis where ionic polymers fail.

Paper & Pulp Industry:

Utilized as a wet-end additive for filler retention and drainage aid in acidic papermaking systems.

Mineral Processing:

Settling and filtration acceleration for quartz, gold, copper, and coal slurry tailings under acidic or saline conditions.

Textile & Dyeing Effluents:

Co-flocculation agent in conjunction with inorganic coagulants (PAC/Alum) to remove suspended solids and disperse dyes.

Product Selection Guide

Selecting the correct molecular weight and dosage prevents operational inefficiencies such as overdosing, filter blinding, or slow settling rates.

Influent Water Condition
Acidic / High Salinity / Low pH (pH 2.0 - 6.0) --> Nonionic PAM (NPAM)
Negatively Charged Suspended Solids (Neutral/Alkaline) --> Anionic PAM (APAM)
Positively Charged Sludge / Organic Load (Biological) --> Cationic PAM (CPAM)

Selection Workflow for NPAM:
• Screening for Molecular Weight: Use lower molecular weight (8-10M) for rapid filtration and centrifugation; use ultra-high molecular weight (15-18M) for gravity sedimentation and sludge thickening.
• Jar Testing Protocol: Prepare a 0.1% stock solution using mature water. Disperse powder slowly into the vortex of agitated water to ensure complete hydration. Conduct jar tests at varying dosage gradients (1 - 10 ppm) to determine optimal clarity and floc size.
• Compatibility Check: Verify compatibility when combining with inorganic coagulants (polyaluminum chloride or ferric sulfate). Add inorganic coagulants first, allow complete flash mixing (30s), then inject diluted NPAM into the slow-mix zone (60s).

Manufacturing & Quality Control

Polymerization Process: Produced via aqueous solution polymerization in closed stainless-steel reactors under strict temperature control (+/- 0.5°C), ensuring uniform molecular weight distribution.

Drying & Milling: Continuous fluidized-bed drying coupled with precision mechanical grinding and multi-stage air classification to maintain uniform particle distribution (20 - 80 mesh).

Batch Testing Protocols: Every production lot undergoes rigorous inspection for viscosity average molecular weight, dissolution rate, and residual monomer content using Brookfield viscometers and high-performance liquid chromatography (HPLC).

Traceability: Each pallet is labeled with a unique batch number linked to raw material lot records, retained samples, and a signed Certificate of Analysis (COA).

Packaging & Supply Capacity

Standard Packaging:
25 kg multi-wall kraft paper bags with inner polyethylene moisture-proof liners.
1,000 kg heavy-duty PP bulk bags (FIBC) with discharge spouts.

Palletization & Loading: Secured on fumigation-free wooden or plastic pallets, shrink-wrapped and corner-protected for international container transport. (20' FGP holds up to 18 MT with pallets).

Storage Conditions: Store in a cool, dry, well-ventilated area (5°C - 30°C). Keep packages tightly sealed to prevent moisture absorption, which causes caking. Shelf life: 24 months from the manufacturing date.

Supply Capacity: Annual output capacity of 30,000 MT, supported by dedicated warehouse inventory ensuring steady shipment cycles for global distributors and industrial accounts.

Why Choose Ecolink

01/

Direct Manufacturing Control: Complete oversight from raw acrylamide monomer sourcing to finished polymer processing, eliminating intermediary supply chain volatility.

02/

Rigorous Documentation: Full compliance packages provided, including REACH pre-registration data, GHS-compliant SDS, and batch-specific COAs.

03/

Application Engineering Support: Technical team available to review local water quality reports and assist in polymer selection and jar-test verification.

04/

Stable Logistical Execution: Established export channels partnering with major shipping lines, ensuring predictable lead times to North American and European ports.

Frequently Asked Questions

Q: Why should I choose Nonionic PAM over Anionic PAM for my wastewater treatment?

A: Anionic PAM relies on negative charge sites interacting with positively charged particles or metal ions. In acidic environments (pH < 5) or high-salinity effluents, high concentrations of hydrogen or salt ions compress the polymer's electrical double layer, causing charge shielding and coiling of anionic chains. Nonionic PAM operates primarily through hydrogen bonding and physical adsorption, remaining unaffected by pH drops or electrolyte concentrations.

Q: How can I prevent "fish-eyes" (undissolved gel lumps) during polymer preparation?

A: Fish-eyes occur when dry powder clumps before individual particles hydrate. To prevent this, use an automated dry-powder feeder that scatters powder slowly into the vortex of mechanically agitated water. Avoid dumping bulk powder directly into static water. Maintain stock solution concentration between 0.1% and 0.5%, and allow 45 to 60 minutes of gentle aging before dosing.

Q: What is the shelf life of solid NPAM powder, and how does humidity affect it?

A: Unopened bags stored in cool, dry conditions (< 35°C, relative humidity < 70%) remain stable for 24 months. NPAM is hygroscopic; exposure to moist air causes particles to absorb water, agglomerate, and cross-link, reducing water solubility and effective molecular weight.

Q: Can NPAM be used in potable drinking water treatment?

A: Industrial-grade NPAM contains residual acrylamide monomer restricted by drinking water regulations. For municipal potable water applications, specialized low-monomer, certified drinking-water grades (meeting NSF/ANSI Standard 60 or equivalent regional standards) must be specified. Contact our technical team for drinking-water compliance documentation.

Q: How do I read the molecular weight value on the Certificate of Analysis (COA)?

A: The molecular weight on our COA is determined via intrinsic viscosity measurement using an Ubbelohde viscometer, calculated using the Mark-Houwink equation. For industrial applications, relative solution viscosity serves as a reliable indicator of polymer chain length and bridging performance rather than absolute weight.

Q: What are the minimum order quantities (MOQ) and sample lead times for industrial evaluation?

A: Standard MOQ for commercial orders is one 20-foot container (18 MT). For laboratory evaluation and pilot trials, free 1 kg to 5 kg powder samples are available upon request, dispatched via air express within 3 business days, accompanied by a lot-specific COA and MSDS.

Request a Quote / Technical Consultation

Ready to evaluate our Nonionic Polyacrylamide in your facility? Provide your application parameters (pH, water temperature, target daily volume, and current product specifications) to receive a custom quotation and trial sample.
Email: sales@ecolink-chemicals.com
Technical Inquiry: tech@ecolink-chemicals.com
Response Commitment: Inquiries and sample requests are processed by an application engineer within 24 business hours.

Shandong Ecolink Technology Co., Ltd. is one of the most reliable nonionic polyacrylamide manufacturers and suppliers in China. We warmly welcome you to wholesale bulk high quality nonionic polyacrylamide from our factory. If you have any enquiry about cooperation, please feel free to email us.

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