Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

ACGIH TLV: TWA 0.05 mg(V₂O₅)/m³
NIOSH REL: (Vanadium Compounds) CL 0.05 mg(V)/m³/15 M
DOT Classification:  6.1; Label: Poison

The Ammonium vanadate with CAS registry number of 7803-55-6 is also known as Ammonium metavanadate. The IUPAC name is Azane; hydroxy(dioxo)vanadium. It belongs to product categories of Industrial/Fine Chemicals; Inorganics; ACS GradeChemical Synthesis;Catalysis and Inorganic Chemistry;Essential Chemicals; Routine Reagents; Vanadium; A-B, Puriss p.a. ACS; Analytical Reagents for General Use; Puriss p.a. ACS; Ammonium SaltsChemical Synthesis; Metal and Ceramic Science; Salts; Ammonium Salts; Chemical Synthesis; A-B, Puriss p.a.; Puriss p.a.. Its EINECS registry number is 232-261-3. In addition, the formula is H₄N.O₃V and the molecular weight is 116.98. This chemical is a white or slightly yellow powder or crystal and should be sealed in ventilated, dry place. Besides, it is used as catalyst, drier, mordant and also used to prepare vanadium pentoxide.

Physical properties about Ammonium vanadate are: (1)#H bond acceptors: 3; (2)#H bond donors: 1; (3)Exact Mass: 116.963082; (4)MonoIsotopic Mass: 116.963082; (5)Topological Polar Surface Area: 55.4; (6)Heavy Atom Count: 5; (7)Complexity: 46.2; (8)Covalently-Bonded Unit Count: 2.

Preparation of Ammonium vanadate. Firstly, anhydrous sodium carbonate is dissolved in water and heated to boiling. Then pentoxide alum is slowly added to the solution and potassium permanganate solution is added when CO₂ is lost. Secondly, the mixture is filtered several times, washed by water and heated to 60 °C. At last, reaction occurs by quickly adding ammonium chloride for several hours. Product is obtained after filtration, precipitation and drying in air.

When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes, respiratory system and skin. It is very toxic by inhalation, in contact with skin and if swallowed and it may cause burns. During using it, wear suitable protective clothing, gloves and eye/face protection. Do not breathe dust. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: N.O[V](=O)=O
2. InChI: InChI=1S/H3N.H2O.2O.V/h1H3;1H2;;;/q;;;;+1/p-1
3. InChIKey: YBVKNHXQSRDWAA-UHFFFAOYSA-M

The toxicity data is as follows: