Guanidine carbonate PVP K90 powder draws attention in many industries, largely because its properties suit demanding applications. This powder combines guanidine carbonate—a raw material featuring the formula C2H7N3·H2CO3—with Polyvinylpyrrolidone K90, known as a thick, binding, and film-forming agent. The composite is structured as a fine white or almost white solid that dissolves well in water, producing a slightly alkaline solution. Guanidine carbonate itself typically comes in granules or crystalline flakes, but the addition of PVP K90 brings a boost in functional viscosity and film integrity, making this product a valuable material in both research and manufacturing settings.
The physical structure of guanidine carbonate centers on the guanidine cation, a planar structure bound with carbonate anion. Polyvinylpyrrolidone K90 adds bulk and versatility, its high molecular weight (with a typical K-value around 88–96) contributing to the binding and solubility profile. The powder appears as a solid, but depending on processing needs, suppliers can provide it as flakes or pearls. The density of guanidine carbonate hovers around 1.4 g/cm³, adding considerable mass per liter when compacted in storage containers or solutions. It remains stable at room temperature, though exposure to high humidity can alter its physical state.
This product usually falls under the HS Code 2925290090, which categorizes it with other nitrogenous organic compounds. Specifications focus on factors like purity (often above 99% on a dry basis), moisture content (no more than 0.5%), and particle size (typically less than 300 microns for powder form). In the case of solutions, concentrations often range from 10% to 30%, with the molecular formula and mass remaining consistent throughout. Raw materials must be handled in controlled environments to maintain batch integrity, and experienced technicians monitor pH levels—generally between 11 and 12 in aqueous solutions—to ensure no degradation or hazardous byproducts develop.
Manufacturers offer guanidine carbonate blended with PVP K90 in multiple formats. Powder remains the most common, allowing for fast dissolution and easy measurement into recipes. Flakes and pearls provide less airborne dust during transfer and storage, which experienced users appreciate for both safety and convenience. In labs or specialized production lines, one might work with liquid or crystal forms, depending on desired solubility, reactivity, and downstream blending. Form selection often depends on logistics and the specific environment, not just chemistry; for instance, powder lends itself to rapid mixing while pearls resist moisture intake during long-term storage.
Transporting and handling guanidine carbonate PVP K90 demands caution. The powder exhibits mild irritant properties if contacted on skin, eyes, or inhaled, so gloves, goggles, and masks mark the front line of personal protective equipment. Spilled powder can be slick, and its caustic nature calls for prompt cleanup to avoid both injury and contamination. The chemical profile puts guanidine carbonate in the category of substances classified as hazardous under various chemical safety rules, emphasizing secure packaging and clear labeling throughout the supply chain. Waste disposal follows regulations for nitrogenous chemicals, with liquids and solutions going through neutralization before discarding. In my experience, a focus on training and proactive risk management reduces both workplace mishaps and environmental impacts.
This blend finds its way into pharmaceuticals, technical formulations, and specialty coatings. The high molecular mass of PVP K90 acts as a binder and stabilizer, turning otherwise loose or crumbly materials into cohesive structures. Guanidine carbonate works as a strong base and buffering agent in many synthetic schemes, streamlining production of bioactive compounds or advanced polymers. With decades of use in chemical research, I’ve seen firsthand how switching from low-purity to high-grade powders slashes reject rates and boosts reproducibility for everything from tablets to specialty adhesives. Clear documentation of source, batch, HS Code, and storage protocol matters as much as the laboratory work itself.
Working with raw materials like guanidine carbonate PVP K90 brings responsibility for both safety and quality. Dust management stands at the forefront, as fine powders present inhalation risks in poorly ventilated spaces. I remember one shipment arriving with higher-than-normal static charges—workers equipped with anti-static measures avoided accidental ignition, which can be a risk with dry organics and high friction. Proper labeling, routine checks of storage bins, and updated Safety Data Sheets make a difference. Complex regulatory landscapes around chemicals like these require staff who keep certifications up to date and equipment carefully calibrated.
Improvement often begins with honest assessment. In the manufacturing setting, regular auditing of batch quality and physical inspection—examining whether flakes are too large or powder too clumpy—prevents downstream issues. Bulk users press suppliers for clear test results, often checking for consistency in molecular mass and water content before accepting raw material deliveries. Automation in handling and dosing has cut down accidental releases in recent years, and investment in advanced filtration keeps airborne particulate low. Waste solutions containing guanidine carbonate can be treated with acid before entering effluent streams, neutralizing the solution and reducing nitrogen pollution. From my time managing chemical storage, I’ve learned that transparent record-keeping and rapid recall processes reduce confusion in emergencies and maintain trust through every link in the supply chain.
