Potassium phosphate dibasic trihydrate is a common chemical used in buffer preparation, educational experiments, and various lab workflows. This guide highlights top products, compares key features, and offers practical considerations to help you choose reliable, quality options for non-clinical applications.
Summary of chosen products: the list below focuses on potassium phosphate dibasic trihydrate variants and closely related formulations suitable for research and manufacturing uses. Each item links to its Amazon listing for quick reference and contains essential details like grade, packaging, and notable specifications.
| Product | Brand | Size | Notes |
|---|---|---|---|
| Potassium Phosphate, Dibasic, 99% min., 500 Grams | Unbranded | 500 g | Fine granular powder; indefinite shelf life |
| Potassium Phosphate Dibasic Trihydrate, 500 Grams | Unbranded | 500 g | For research or manufacturing use; not for food or drug |
| Potassium Phosphate Dibasic Trihydrate, 1 Kilogram | Unbranded | 1 kg | For research or manufacturing use; not for food or drug |
| GFS Chemicals 61991 Potassium Phosphate Dibasic Trihydrate Reagent, 100 g | Chemicals Inc | 100 g | Assay 99%; analytical reagent |
| Potassium Phosphate Dibasic Trihydrate, 500 g (Alternative Listing) | Unbranded | 500 g | Standard reagent grade; suitable for non-food lab use |
Potassium Phosphate, Dibasic, 99% min., 500 Grams
The product is a fine granular powder packaged in plastic bottles. It is labeled with a high purity (99% min). The listing notes an indefinite shelf life, which can be advantageous for long-term inventory planning in labs and manufacturing environments. This option is suitable for non-medical, non-ingestive laboratory applications and buffer preparation where high purity is required.
Potassium Phosphate Dibasic Trihydrate, 500 Grams
This 500 g package is described for research or further manufacturing use, with explicit note that it is not for food or drug use. The chemical formula is K2HPO4 – 3H2O, and the listing provides the CAS number 16788-57-1. Such tri-hydrate forms are widely used in buffer systems and educational experiments, with emphasis on non-food lab contexts.
Potassium Phosphate Dibasic Trihydrate, 1 Kilogram
Available in a 1 kg carton, this product is likewise sold for research or manufacturing use and is not intended for food or drug applications. It lists the chemical formula K2HPO4 – 3H2O and includes the CAS number 16788-57-1, making it a reliable choice for buffer preparation and analytical chemistry workflows where precise hydration state matters.
GFS Chemicals 61991 Potassium Phosphate Dibasic Trihydrate Reagent, 100 g
From Chemicals Inc, this reagent-grade product offers 99% assay and is intended for analytical and laboratory reagent use. The 100 g size makes it suitable for bench experiments, calibration tasks, and precise buffer preparation. Its quality designation aligns with strict analytical standards, suitable for educational and research settings where consistent performance is needed.
Buying Guide
When selecting potassium phosphate dibasic trihydrate, consider these key purchase factors to ensure reliability and compatibility with your work:
- Purity and grade: For buffers and analytical work, seek high-purity, analytical reagent (AR) or similar grades. Check the stated assay percentages and any certificates of analysis if available.
- Hydration state: The trihydrate form (K2HPO4 • 3H2O) behaves differently from anhydrous variants. Confirm hydration level matches your protocol to avoid pH or buffering inaccuracies.
- Package size and shelf life: Larger packages reduce per-unit cost but require adequate storage. Indefinite shelf life is favorable for long-term inventory, but always verify storage conditions.
- Intended use: Some listings specify “for research or manufacturing use only” and prohibit food or drug use. Ensure the product aligns with your regulatory and application requirements.
- Brand and supplier reliability: Reputable brands and suppliers with clear formulation data, CAS numbers, and purity specs help ensure reproducibility in experiments and manufacturing workflows.
- Safety and handling: Review Material Safety Data Sheets (MSDS) for handling, storage, and disposal guidelines. Lab-grade products typically come with clear safety information.
- Compatibility with equipment: Confirm that the product’s particle size, purity, and hydration state are compatible with your buffers, analytical instruments, and standard lab protocols.
- Cost-per-gram versus convenience: Balance unit price with packaging size and your consumption rate to optimize overall costs while maintaining availability for ongoing experiments.
In summary, selecting the right potassium phosphate dibasic trihydrate product involves balancing purity, intended use, packaging, and supplier reliability. For laboratory and analytical settings, prioritize items clearly labeled for research or analytical reagent use, confirm the hydration state, and review any accompanying documentation for traceability.