Description

Sodium Bisulfite, Sodium Sulfite, Phenol, Formaldehyde, Urea Polymer is a specialized chemical formulation designed for advanced industrial applications. This product offers a synergistic combination of properties, making it a critical component in processes requiring controlled reactivity and polymer formation. It is essential for manufacturers in sectors demanding high-performance binding, cross-linking, or intermediate synthesis. The compound is supplied under CAS No. 81387-77-1, ensuring precise identification and quality control for global supply chains.

Application

• Adhesive & Resin Manufacturing: Acts as a key cross-linking agent and curing component in the production of phenolic, urea-formaldehyde, and other thermosetting resins.
• Wood Composite Panels: Serves as a binder in particleboard, medium-density fiberboard (MDF), and plywood for enhanced water resistance and structural integrity.
• Foundry & Molding Sands: Used as a core binder in shell molding and no-bake processes to create precise metal castings.
• Textile & Paper Treatment: Functions as a modifying agent to improve wet strength, crease resistance, and dimensional stability in fibers and paper products.
• Water Treatment Formulations: Incorporated into specialty blends for oxygen scavenging and as a precursor for certain flocculants.
• Industrial Coatings: Utilized in the synthesis of coating resins that require specific chemical and thermal resistance properties.

Basic Information

Product Name	Sodium Bisulfite, Sodium Sulfite, Phenol, Formaldehyde, Urea Polymer
CAS No.	81387-77-1
Molecular Formula	Complex Polymer / Formulation
Molecular Weight	Contact for details
Synonyms	Urea-Formaldehyde-Phenol Polymer Modified with Sulfites; Phenol-Formaldehyde-Urea Resin with Sodium Sulfite/Bisulfite; Sulfited Phenolic Urea Resin; Condensation polymer of phenol, formaldehyde, urea, sodium sulfite; Sodium sulfite phenol formaldehyde urea polymer; Binder resin; Amino-phenolic resin; Industrial adhesive polymer; Thermosetting resin blend
EINECS	Contact for details

Quality Control

Our Sodium Bisulfite, Sodium Sulfite, Phenol, Formaldehyde, Urea Polymer is manufactured under a stringent quality management system. Each batch is tested to ensure consistent performance in its target applications, with key parameters including reactivity, viscosity, solids content, and free formaldehyde levels. Certificates of Analysis (COA) documenting these specifications are provided with every shipment to guarantee traceability and compliance with your internal standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can alter its properties. Keep away from heat sources and incompatible materials such as strong oxidizers.

Specification

Item	Specification
Appearance	Viscous liquid to solid mass
Color	Light yellow to amber
Solids Content	Contact for details
Viscosity	Contact for details
pH (as supplied or in solution)	Contact for details
Free Formaldehyde	< 1.0% (typical)
Gel Time	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.