Since 1970
Since 1970
Premium industrial-grade Paraformaldehyde (Prill / Powder forms, 91% and 96% min purity). Engineered as a highly concentrated, low-water solid formaldehyde source for manufacturing high-solids synthetic resins, industrial adhesives, and chemical intermediates.
Chemical Formula: $\text{HO}(\text{CH}_2\text{O})_n\text{H}$ (where $n = 8 \text{ to } 100$)
Purity (Formaldehyde Content): Available in $\ge 91.0\%$ (Standard) and $\ge 96.0\%$ (High-Purity)
Primary Function: Solid formalization agent, resin reactant, and chemical intermediate
Key Properties: Low water content, uniform depolymerization rates, and minimal storage footprint
Standard Packaging: 25kg multi-wall PE-lined bags / 500kg or 1,000kg bulk super sacks
Paraformaldehyde (PFA) is the smallest solid polyoxymethylene polymer, representing a highly concentrated crystalline form of formaldehyde. Synthesized by the vacuum distillation and polymerization of aqueous formaldehyde solutions, it serves as an efficient, water-free alternative to liquid formalin. When heated or introduced to acid/base catalysts, Paraformaldehyde cleanly depolymerizes into reactive gaseous or liquid monomeric formaldehyde. This makes it an ideal raw material for industrial processes that require high reactant concentrations and minimal water generation.
Synthetic Resins & Coatings: Widely used to cook phenol-formaldehyde (phenolic), urea-formaldehyde, and melamine-formaldehyde resins. It is highly valued in producing high-solids industrial coatings and wood-bonding adhesives because it reduces processing cycle times by eliminating the need to distill out excess water.
Agrochemical & Thermoplastic Synthesis: Acts as a key chemical intermediate in manufacturing herbicides, fungicides, and specialized polyoxymethylene (POM) engineering plastics.
Pharmaceuticals & Dyestuffs: Used as a solid formalization reactant in synthesizing targeted medical compounds, custom fixatives, and premium organic pigments.
Minimal Water Formation: Unlike standard $37\%$ formalin solutions, solid Paraformaldehyde introduces virtually no water into the reactor loop, increasing batch yields and lowering waste distillation energy costs.
Controlled Depolymerization Kinetics: Optimized solubility profiles ensure steady, predictable depolymerization rates, preventing dangerous exotherms and maximizing conversion efficiency.
Reduced Dusting Geometries: Prilled (spherical) grades provide superior flow characteristics, low friability, and minimal dust generation, improving workplace safety during hopper charging.
| Property / Parameter | 91% Commercial Grade | 96% High-Purity Grade |
| Appearance | White prills or powder | White prills or powder |
| Formaldehyde Content (%) | $\ge 91.0$ | $\ge 96.0$ |
| Moisture / Water (%) | $\le 9.0$ | $\le 4.0$ |
| Ash Content (%) | $\le 0.05$ | $\le 0.02$ |
| Iron Content (ppm) | $\le 5$ | $\le 2$ |
| pH (at 20°C, 10% suspension) | 4.0 – 5.5 | 4.0 – 5.5 |
Paraformaldehyde is a combustible, toxic solid that releases hazardous formaldehyde vapor over time, especially when exposed to heat or moisture. Store in original, tightly sealed packaging within a cool, dry, dark, and well-ventilated fire-safe warehouse area. Keep well isolated from open flames, sparks, hot surfaces, and strong oxidizing materials or alkalis. Because PFA releases irritating fumes, ensure local exhaust ventilation systems are active during handling. Open containers must be resealed immediately. Material Safety Data Sheets (MSDS) and batch Certificates of Analysis (COA) accompany every shipment.