13106-76-8 Usage
Description
Ammonium molybdate, also known as (NH4)2MoO4, is an ammonium salt composed of ammonium and molybdate ions in a 2:1 ratio. It is a colorless, white, or slightly greenish-yellow powder that plays a role as a poison and contains a molybdate. Ammonium molybdate can be prepared by dissolving molybdenum trioxide in ammonia.
Uses
Used in Chemical Analysis:
Ammonium molybdate is used as an analytical reagent for quantitative analysis of phosphates, silicates, arsenates, and lead in their aqueous solutions. It is particularly useful in the determination of phosphorus.
Used in Biological Electron Microscopy:
At saturated concentration, ammonium molybdate is used to perform cryo-negative staining and as a negative stain in biological electron microscopy, aiding in the visualization of biological samples.
Used in the Study of Crystallization of Cell-free-expressed Membrane Proteins:
Ammonium molybdate is utilized in the study of crystallization of cell-free-expressed membrane proteins, which is crucial for understanding their structure and function.
Used in the Preparation of Phosphomolybdates:
Ammonium molybdate has been used to prepare phosphomolybdates, which are important compounds in various chemical and analytical applications.
Used in the Analysis and Separation of Alkaloids and Alkali Metals:
Some of the phosphomolybdic acids derived from ammonium molybdate are used as reagents for the alkaloids and in the analysis and separation of the alkali metals, further expanding its utility in chemical analysis.
Production Methods
Pure molybdic oxide (99.95% MoO3) is prepared by sublimation of technical oxide or by calcining ammonium molybdate. Metallic molybdenum powder is prepared commercially by hydrogen reduction of either pure molybdic oxide or ammonium molybdate in a two-step process.
Flammability and Explosibility
Notclassified
Safety Profile
Poison by ingestion and
intraperitoneal routes. Moderately toxic by
other routes. An irritant. See also
MOLYBDENUM COMPOUNDS. When
heated to decomposition it emits toxic
fumes of NH3 and NOx.
Potential Exposure
It is used as an analytical reagent, in
pigments and in the production of molybdenum metal and
ceramics.
Shipping
There are no known UN/DOT restrictions.
Purification Methods
Crystallise the salt from water (2.5mL/g) by partial evaporation in a desiccator. [Sturdivant J Am Chem Soc 59 630 1937, Grüttner & Jauder in Handbook of Preparative Inorganic Chem (Ed. Brauer) Academic Press Vol II p 1711 1965.]
Incompatibilities
Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions.
Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides; chemically active metals
(such as potassium, sodium, magnesium and zinc) may
cause a violent reaction.
Check Digit Verification of cas no
The CAS Registry Mumber 13106-76-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,0 and 6 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13106-76:
(7*1)+(6*3)+(5*1)+(4*0)+(3*6)+(2*7)+(1*6)=68
68 % 10 = 8
So 13106-76-8 is a valid CAS Registry Number.
InChI:InChI=1/Mo.2H3N.2H2O.2O/h;2*1H3;2*1H2;;/q+2;;;;;;/p-2/rH2MoO4.2H3N/c2-1(3,4)5;;/h2-3H;2*1H3
