Description
Specifications Table
Product Name – Ammonium tetrathiomolybdate, 99.95%, (trace metal basis)
Quantity/Pack Size – 1GR, 10GR, 50GR, 250GR
Form – Crystalline powder
Grade – 99.95% (trace metal basis)
Application – Analytical reagent, catalyst precursor, material synthesis
Product Overview
Ammonium tetrathiomolybdate (99.95% trace metal basis) is a high-purity inorganic compound widely recognized for its exceptional reactivity and solubility in polar solvents. This crystalline powder serves as a critical reagent in analytical chemistry, particularly in trace metal analysis, where its molybdenum-thiolate complexation properties enable precise detection of heavy metals. The compound’s ultra-low impurity profile ensures minimal interference in spectroscopic and chromatographic applications, making it indispensable for researchers requiring high-accuracy results. Its role as a catalyst precursor in hydrodesulfurization and other industrial processes further highlights its versatility. The product is synthesized under stringent conditions to maintain its 99.95% purity, with rigorous quality control measures eliminating common contaminants like iron, copper, and lead. Its stability under ambient conditions, combined with a long shelf life when stored properly, ensures consistent performance across repeated experiments. The powder dissolves readily in water and alcohols, forming stable solutions that retain their chemical integrity over extended periods. For laboratories prioritizing reproducibility and precision, this grade of ammonium tetrathiomolybdate offers an unmatched balance of purity, solubility, and reliability, reducing variability in experimental outcomes.
FAQs
1. What is the solubility profile of ammonium tetrathiomolybdate in organic solvents?
It exhibits excellent solubility in polar organic solvents like methanol, ethanol, and DMSO, forming clear solutions at concentrations up to 50 mg/mL. In nonpolar solvents such as hexane or toluene, solubility is negligible.
2. Can this compound be used as a direct replacement for sodium tetrathiomolybdate in existing protocols?
While chemically similar, ammonium tetrathiomolybdate may require adjustments in pH or concentration due to differences in counterion behavior. Pilot testing is recommended to validate compatibility with your specific protocol.
3. What are the primary decomposition products when this compound is heated above 100°C?
Thermal decomposition primarily yields molybdenum disulfide (MoS₂), ammonia (NH₃), and sulfur vapors. The process is exothermic and should be conducted in a fume hood with proper ventilation.
4. How does the trace metal basis specification affect experimental reproducibility?
The 99.95% trace metal basis ensures that residual metallic impurities (e.g., Fe, Cu, Ni) are below 50 ppm, minimizing interference in spectroscopic analyses or catalytic reactions where trace metals could act as unintended catalysts or inhibitors.
5. What is the recommended storage condition to prevent moisture absorption?
Store in a tightly sealed container under inert gas (argon/nitrogen) with desiccant packs. Maintain temperature between 15–25°C and relative humidity below 30% to prevent hydration and subsequent degradation of the thiomolybdate anion.
