12054-85-2

Basic information

• Product Name: Ammonium molybdate tetrahydrate
• Synonyms: Molybdate(6-),hexaammonium,tetrahydrate;MOLYBDIC ACID, AMMONIUM SALT;MOLYBDIC ACID AMMONIUM SALT TETRAHYDRATE;AMMONIUM HEPTA MOLYBDATE, HYDROUS;AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE;AMMONIUM MOLYBDATE(VI) TETRAHYDRATE;AMMONIUM MOLYBDATE (PARA) TETRAHYDRATE;AMMONIUM MOLYBDATE TETRAHYDRATE
• CAS NO: 12054-85-2
• Molecular Formula: 4MoO3.3H2MoO4.4H2O.6H3N
• Molecular Weight: 1235.85
• EINECS: 234-320-9
• Product Categories: Industrial/Fine Chemicals;Water Ttreatment Chemicals
• Mol File: 12054-85-2.mol
• Article Data: 0

Chemical Properties

• Melting Point: 190 °C
• Boiling Point: 190°C
• Appearance: White to yellow-green/Solid
• Density: 2.498 g/mL at 25 °C(lit.)
• Storage Temp.: room temp
• Solubility: H2O: 0.05 M at 20 °C, clear, colorless
• Water Solubility: 400 g/L (20 ºC)
• Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
• Merck: 14,533
• CAS DataBase Reference: Ammonium molybdate tetrahydrate(CAS DataBase Reference)
• NIST Chemistry Reference: Ammonium molybdate tetrahydrate(12054-85-2)
• EPA Substance Registry System: Ammonium molybdate tetrahydrate(12054-85-2)

Safety Data

• Hazard Codes: Xi,Xn
• Statements: 36/37/38-22-20/21/22
• Safety Statements: 26-37/39-36/37-36
• RIDADR: 3288
• WGK Germany: 1
• RTECS: QA5076000
• TSCA: Yes
• Hazardous Substances Data: 12054-85-2(Hazardous Substances Data)

Usage

Description

Ammonium molybdate tetrahydrate (also referred to as Ammonium heptamolybdate, chemical formula: (NH4)6Mo7O24)), appearing as a colorless solid. It can be manufactured through dissolving the molybdenum trioxide in excess amount of aqueous ammonia and evaporating the solution at the room temperature. It has many applications, e.g. as an analytic reagent for measuring content of phosphates, silicates, arsenates and lead; for the production of molybdenum metal and ceramics; for the production of dehydrogenation and desulphurization catalysts; for the fixing of metals; for electroplating; supplement in the crop fertilizer; as a negative stain in biological electron microscopy; as an analgesic in medical fields.

References

https://en.wikipedia.org/wiki/Ammonium_heptamolybdate https://www.alfa.com/zh-cn/catalog/A13766/

Chemical Properties

White, crystalline powder. Soluble in water; insoluble in alcohol. Nonflammable.

Uses

Different sources of media describe the Uses of 12054-85-2 differently. You can refer to the following data:
1. Determination of phosphates, arsenates, and lead.
2. Ammonium molybdate tetrahydrate is widely utilized in cryo-negative staining which helps to visualize particles while preserving the sample. It is used as a catalyst to desulfurize thiophene and its derivatives. It serves as an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in an aqueous solution. It is also used in electroplating, in fertilizers for crops and in the production of molybdenum metal and ceramics. It is used as an analgesic in medical field.

General Description

Ammonium molybdate tetrahydrate (AMT) is a molybdenum salt. Study of its extraction from nickel-molybdenum (Ni–Mo) ore by direct hydrometallurgical method has been reported. Its degradation by combustion to form elemental molybdenum powder using metallic reducers has been investigated.

Hazard

Irritant.

InChI:InChI=1/7Mo.6H3N.10H2O.18O/h;;;;;;;6*1H3;10*1H2;;;;;;;;;;;;;;;;;;/q;;;;3*+2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/p-6/r3H2MoO4.4MoO3.6H3N.4H2O/c3*2-1(3,4)5;4*2-1(3)4;;;;;;;;;;/h3*2-3H;;;;;6*1H3;4*1H2

Related news

Organic photovoltaic devices incorporating a molybdenum oxide hole-extraction layer deposited by spray-coating from an Ammonium molybdate tetrahydrate (cas 12054-85-2) precursor07/27/2019

Polymer bulk heterojunction solar cells have been constructed using a thin film molybdenum oxide (MoOx) hole extraction layer that was fabricated by thermally annealing an ammonium molybdate tetrahydrate precursor layer deposited in air by ultrasonic spray-coating. Onto this layer was spray cast...detailed