Description

Diammonium Molybdate, Tetrahydrate is a high-purity inorganic salt of molybdenum, widely recognized for its role as a crucial source of molybdate ions. This compound is essential for applications requiring a soluble and reactive molybdenum precursor, particularly in catalysis and materials science. It is a key raw material for industries including chemical manufacturing, agriculture, and the production of specialty ceramics and pigments.

Application

• As a catalyst precursor in petrochemical refining and organic synthesis processes.
• As a micronutrient fertilizer and a component in agricultural trace element supplements.
• In the manufacturing of molybdenum-based chemicals, such as molybdenum trioxide and other molybdate salts.
• As a corrosion inhibitor in cooling water systems and metal treatment formulations.
• In the production of pigments and ceramics, where it acts as a colorant and sintering aid.
• For analytical chemistry applications as a standard or reagent.
• In electroplating baths for depositing molybdenum-containing alloys.
• As a flame retardant synergist in certain polymer formulations.

Basic Information

Product Name	Diammonium Molybdate, Tetrahydrate
CAS No.	33972-39-3
Molecular Formula	(NH₄)₂MoO₄·4H₂O
Molecular Weight	339.99 g/mol
Synonyms	Ammonium Molybdate Tetrahydrate; Diammonium Tetramolybdate Tetrahydrate; Ammonium Heptamolybdate Tetrahydrate (common misnomer); Molybdate (MoO4²⁻), diammonium, tetrahydrate; Molybdic Acid, Diammonium Salt, Tetrahydrate; (T-4)-Diammonium Molybdate Tetrahydrate; Ammonium Orthomolybdate Tetrahydrate
EINECS	Contact for details

Quality Control

Our Diammonium Molybdate, Tetrahydrate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent absorption of moisture from the air, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White or slightly yellow crystalline powder
Identification (IR)	Conforms
Assay (as (NH₄)₂MoO₄·4H₂O)	≥ 99.0%
pH (5% solution)	5.0 - 7.0
Chloride (Cl)	≤ 0.005%
Sulfate (SO₄)	≤ 0.01%
Heavy Metals (as Pb)	≤ 0.001%
Insoluble Matter	≤ 0.01%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.