| Identification | More | [Name]
Ammonium metavanadate | [CAS]
7803-55-6 | [Synonyms]
AMMONIUM METAVANADATE
AMMONIUM MONOVANADATE
AMMONIUM M-VANADATE
AMMONIUM OXIDE
AMMONIUM VANADATE
AMMONIUM VANADATE(+5)
AMMONIUM VANADATE, META
AMMONIUM VANADATE (V)
AMMONIUM VANADIUM OXIDE
NH4VO3
VANADIUM ICP STANDARD
VANADIUM OXIDE
Ammoniumvanadate(V)(NH4VO3)
rcrawastenumberp119
vanadate(vo3(1-)),ammonium
vanadate(vo31-),ammonium
Vanadate,ammonium
vanadicacid(hvo3),ammoniumsalt
vanadicacid,ammoniumsalt
ammonium trioxovanadate | [EINECS(EC#)]
232-261-3 | [Molecular Formula]
H4NO3V | [MDL Number]
MFCD00011430 | [Molecular Weight]
116.98 | [MOL File]
7803-55-6.mol |
| Chemical Properties | Back Directory | [Appearance]
Ammonium metavanadate is a white or
slightly yellow crystalline powder. It is an inorganic
acidic salt | [Melting point ]
200 °C
| [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℃) | [Stability:]
Stable. Incompatible with strong acids, strong oxidizing agents. Protect from moisture-hygroscopic. | [Water Solubility ]
5.1 g/L (20 ºC) | [Merck ]
14,568 | [Exposure limits]
NIOSH: Ceiling 0.05 mg/m3 | [CAS DataBase Reference]
7803-55-6(CAS DataBase Reference) | [EPA Substance Registry System]
7803-55-6(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T+,T | [Risk Statements ]
R25:Toxic if swallowed.
R26:Very Toxic by inhalation.
R36/37/38:Irritating to eyes, respiratory system and skin .
R20:Harmful by inhalation.
R34:Causes burns.
R22:Harmful if swallowed.
R36/37:Irritating to eyes and respiratory system .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S37/39:Wear suitable gloves and eye/face protection .
S22:Do not breathe dust .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) . | [RIDADR ]
UN 2859 6.1/PG 2
| [WGK Germany ]
3
| [RTECS ]
YW0875000
| [F ]
3 | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
28419000 | [Safety Profile]
Poison by ingestion,
subcutaneous, intravenous, intratracheal,
and intraperitoneal routes. Moderately toxic by skin contact. An experimental teratogen.
Other experimental reproductive effects.
Mutation data reported. See also
VANADIUM COMPOUNDS. When
heated to decomposition it emits toxic
fumes of NH3, VOx, and NOx. | [Hazardous Substances Data]
7803-55-6(Hazardous Substances Data) | [Toxicity]
LD50 orally in rats: 0.16 g/kg (Smyth) |
| Hazard Information | Back Directory | [General Description]
A white crystalline powder. Slightly soluble in water and denser than water. Decomposes at 410°F. May release toxic fumes. Moderately toxic. An irritant. Used as a dryer for paints and inks, and for dyes. Loses ammonia upon heating. | [Reactivity Profile]
Acidic inorganic salts, such as AMMONIUM METAVANADATE(7803-55-6), are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. | [Air & Water Reactions]
Slightly soluble in water. | [Health Hazard]
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | [Potential Exposure]
It is used in the metals industry to
make alloys, chemical reactions, dyes, inks, varnishes,
printing, medicines, and photography. | [Fire Hazard]
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. | [First aid]
Move victim to fresh air. Call 911 or emergency
medical service. Give artificial respiration if victim
is not breathing. Do not use mouth-to-mouth method
if victim ingested or inhaled the substance; give artificial
respiration with the aid of a pocket mask equipped with
a one-way valve or other proper respiratory medical
device. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes.
In case of contact with substance, immediately flush skin
or eyes with running water for at least 20 minutes.
For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of
exposure (inhalation, ingestion or skin contact) to substance
may be delayed. Ensure that medical personnel are
aware of the material(s) involved and take precautions to
protect themselves. Medical observation is recommended
for 24 to 48 hours after breathing overexposure, as pulmonary
edema may be delayed. As first aid for pulmonary
edema, a doctor or authorized paramedic may consider
administering a drug or other inhalation therapy. | [Shipping]
UN2859 Ammonium metavanadate, Hazard
Class: 6.1; Labels: 6.1-Poisonous materials. | [Incompatibilities]
Moisture forms an acidic solution. React
with bases and alkaline material: may generate heat and
release flammable hydrogen gas. | [Chemical Properties]
Ammonium metavanadate is a white or
slightly yellow crystalline powder. It is an inorganic
acidic salt | [Chemical Properties]
white or slightly yellow powder or crystals | [Uses]
In dyeing and printing on woolens; staining wood black; manufacture of vanadium black and "indelible ink"; producing vanadium luster on pottery; as photographic developer; in hematoxylin staining in microscopy; as reagent in analytical chemistry. | [Uses]
Used in combustion analysis of carbon, hydrogen, and nitrogen | [Application]
Ammonium metavanadate is a water soluble inorganic acid. It is a cheaply available, mild and efficient catalyst. Its ability to alter female reproduction has been studied in swiss albino mice.
Ammonium metavanadate may be used as a substrate in the synthesis of the following:
silver vanadate (AgVO3) nanorods
manganese vanadate nanobelts
vanadium oxide hydrate semi-microspheres
It may be used as a catalyst in the synthesis of the following:
azalactone derivatives
2,4,5-triaryl-1H-imidazoles
octahydroquinazolinone derivatives
α-hydroxyphosphonates | [Preparation]
Ammonium metavanadate, NH4VO3, plays an important role in the preparation of vanadium oxides and other ammonium compounds, such as NH4V3O8, (NH4)2V3O8, and NH4V4O10, which were found to possess interesting electrochemical properties.
Synthesis of ammonium metavanadate: Vanadium iron powder and charcoal powder mixed with a certain proportion of granulation for roasting, and the role of liquid alkali to generate sodium vanadate, the clear liquid after concentration, filtration, neutralization with hydrochloric acid to Ph7.5 ~ 8, filtration, filtrate heating to 70 ~ 80 ℃, stirring under the addition of ammonium chloride solution, the precipitate by centrifugal separation, washing, drying, the production of ammonium metavanadate crystals.
tailoring the size and shape-new path for ammonium metavanadate synthesis | [Flammability and Explosibility]
Nonflammable | [Purification Methods]
Wash the salt with H2O until free from Cl-ions and dry it in air. It is soluble in H2O (5.18g/100mL at 15o, 10.4g/100mL at 32o) but is more soluble in dilute NH3. It crystallises from conductivity water (20mL/g). When heated at relatively low temperature, it loses H2O and NH3 to give vanadium oxide (V2O5), and at 210o it forms lower oxides. [Baker et al. Inorg Synth III 117 1950.] Its solubility in H2O is 0.52% (15o), 1% (32o) and 1.6% (50o). After washing the technical grade salt with H2O, it had Na, Mn and U at 0.06, 0.2 and 0.1 ppm, respectively. [Brauer in Handbook of Preparative Inorganic Chem (Ed. Brauer) Academic Press Vol II p 1272-1273 1965.] |
| Questions And Answer | Back Directory | [Description]
Ammonium metavanadate can be used as a catalyst for organic synthesis. Thermal decomposition of ammonium metavanadate yields vanadium pentoxide, V205, which is widely used as catalyst and precursor for other vanadium compounds and metallic vanadium itself. Ammonium metavanadate is a reagent in the analytical chemistry and a developer in the photography industry. Ammonium metavanadate is used in dyeing and printing in the textile industry. Ammonium metavanadate is also used as dryer for paints. | [References]
[1] Kirti S.Niralwad, Bapurao B.Shingate and Murlidhar S.Shingare, Microwave-assisted one-pot synthesis of octahydroquinazolinone derivatives using ammonium metavanadate under solvent-free condition, Tetrahedron Letters, 2010, vol. 51, 3616-3618
[2] Ganesh R. Jadhav, Mohammad U. Shaikh, Rajesh P. Kale, Charansingh H. Gill, Ammonium metavanadate: A novel catalyst for synthesis of 2-substituted benzimidazole derivatives, Chinese Chemical Letters, 2009, vol. 20, 292-295
[3] Swapnil S. Sonar, Amol H. Kategaonkar, M. N. Ware; Charansingh H. Gill, Bapurao B. Shingate and Murlidhar S. Shingare, Ammonium metavanadate: an effective catalyst for synthesis of α-hydroxyphosphonates, ARKIVOC, 2009, vol. 2009, 138-148
[4] Klaus-Jürgen Range and Reinhard Zintl, The thermal decomposition of ammonium metavanadate (V) in open and closed systems, Zeitschrift für Naturforschung B, 1988, vol.43, 309-317
[5] Jeanne Mager Stellman, Encyclopaedia of Occupational Health and Safety: Chemical, Industries and Safety, 2012
[6] NPCS Board of Consultants & Engineers, Selected Formulary Book on Inks, Paints, Lacquers, Varnishes and Enamels, 2007
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