Why Aluminum Sulfate Hydrate ACS Grade
Aluminum Sulfate Hydrate ACS Grade (CAS 7784-31-8) provides the rigorous analytical purity and lot-traceability required for critical laboratory methodologies and quality control testing. As a certified reagent meeting exact American Chemical Society specifications, this 18-hydrate white crystalline powder ensures reproducible results in environmental compliance testing and complex chemical formulations. Laboratory managers and analytical chemists rely on this strictly controlled material because it eliminates the impurity-driven variability found in standard industrial chemicals. Offering high water solubility alongside moderate solubility in organic solvents, this granular solid compound is engineered to meet specific method requirements, including ASTM standards, where baseline accuracy and documented chemical consistency are mandatory.
Best Applications for This Grade
- Commonly applied in environmental laboratory testing as a primary standard for evaluating municipal wastewater treatment efficacy, specifically in bench-scale jar testing and the calibration of advanced coagulation assays.
- Utilized in quantitative analysis and compleximetric titrations where the exact stoichiometry of the Al2(SO4)3 * 18H2O formula is strictly required to establish accurate baseline calculations and reliable chemical benchmarks.
- Functions as a critical precursor reagent in industrial research and development for synthesizing advanced aluminum-based compounds. The high water solubility and granular texture allow for precise weigh-outs, rapid dissolution in aqueous matrices, and controlled precipitation rates.
- Operates as a strictly controlled reference material for quality control chemists validating scale-up manufacturing processes. Its moderate organic solvent solubility permits integration into mixed-solvent systems, supporting specialized synthetic chemistry while keeping trace impurities below ACS detection limits.
When to Choose a Different Grade
- If the application involves bulk industrial wastewater flocculation or environmental remediation where trace-level elemental impurities do not impact the core mechanical process, Aluminum Sulfate Technical Grade provides the required coagulation properties while optimizing operational budgets.
- If analytical protocols dictate specialized trace-metal profiling such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS), researchers require a specialized Trace Metal Grade rather than standard ACS certified reagents.
| Molecular Weight |
342.15 |
| Formula |
Al2(SO4)3 * 18H2O |
| Assay |
99-100.5% |
| Grade |
ACS Grade |
| Form |
Solid |
| Solubility |
Soluble in water |
| Appearance |
White crystalline solid |
| Melting Point |
86 |
| Boiling Point |
187°C (368.6°F) |
| Specific Gravity |
1.67 |
| Industry |
Environmental Engineering, Pulp and Paper, Textiles, Food Industry, Analytical Chemistry |