Ammonium Molybdate Tetrahydrate

CAS Number: 7803-55-6

Molecular Formula: H₄NO₃V

Molecular Weight: 116.94

Common Names & Grade Specifications:

  • Ammonium metavanadate, 99+% purity
  • Ammonium vanadium oxide (ACS grade, minimum 99.0% purity)
  • Ammonium vanadium oxide (Puratronic® grade, 99.995% purity on metals basis)

    Appearance: White crystalline powder

    MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

Product Details

This product is widely deployed across multiple industrial fields. It acts as a catalyst for various organic synthesis reactions. When subjected to thermal decomposition, ammonium metavanadate produces vanadium pentoxide (V₂O₅). The resulting vanadium pentoxide serves as a common catalyst, as well as a key precursor for manufacturing other vanadium-containing compounds and metallic vanadium.

In analytical chemistry, it is widely used as a standard laboratory reagent. It also functions as a developing agent in the photographic industry. For textile production, it is applied as an auxiliary agent in fabric dyeing and printing processes. Additionally, it is commonly used as a drying agent in paint formulations.

Ammonium Metavanadate Chemical Properties

Melting point 

200 °C

bulk density

1000kg/m3

density 

2.32 g/cm3 at 25 °C (lit.)

storage temp. 

Store at RT.

solubility 

H2O: soluble

form 

Solid

color 

White to yellow

Specific Gravity

2.33

Odor

Odorless

PH

7 (5.1g/l, H2O, 20℃)

Water Solubility 

5.1 g/L (20 ºC)

Merck 

14,568

Exposure limits

NIOSH: Ceiling 0.05 mg/m3

Stability:

Stable. Incompatible with strong acids, strong oxidizing agents. Protect from moisture - hygroscopic.

Cosmetics Ingredients Functions

BUFFERING

CAS DataBase Reference

7803-55-6(CAS DataBase Reference)

EPA Substance Registry System

Ammonium vanadate (7803-55-6)

 Safety Information

Hazard Codes 

T+,T

Risk Statements 

25-26-36/37/38-20-34-22-36/37-23/24/25

Safety Statements 

26-36/37/39-45-37/39-22-28

RIDADR 

UN 2859 6.1/PG 2

WGK Germany 

3

RTECS 

YW0875000

3

TSCA 

TSCA listed

HazardClass 

6.1

PackingGroup 

II

HS Code 

28419030

Hazardous Substances Data

7803-55-6(Hazardous Substances Data)

Toxicity

LD50 orally in rats: 0.16 g/kg (Smyth)

Ammonium metavanadate is an inorganic ammonium compound, and its aqueous solution presents weak acidity. The product features good water solubility; it is an economical raw material with mild chemical properties and excellent catalytic performance.

Related biological studies have been carried out to explore its effects on female reproductive function, with Swiss albino mice adopted as experimental subjects.

Regarding delivery schedule: In-stock products can be arranged for shipment within 2 to 3 working days. For newly manufactured orders, the production and delivery cycle takes 7 to 10 working days.

Ammonium Molybdate Tetrahydrate

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