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Vanadium pentoxide

Physical properties Uses Preparation References
Vanadium pentoxide
Vanadium pentoxide
CAS No.
1314-62-1
Chemical Name:
Vanadium pentoxide
Synonyms
V2-O5;Vandia;C.I. 77938;vanadiumdust;vanadiumfume;VANADIUM METAL;VANADIN(V)OXIDE;Vanadiumpentoxid;Vanadium(Ⅴ)oxide;Vanadiumpentoxyde
CBNumber:
CB7265055
Molecular Formula:
O5V2
Formula Weight:
181.88
MOL File:
1314-62-1.mol

Vanadium pentoxide Properties

Melting point:
690 °C
Boiling point:
3380 °C(lit.)
Density 
3.35 g/mL at 25 °C(lit.)
vapor pressure 
8 mm Hg ( 20 °C)
Flash point:
1750°C
storage temp. 
Poison room
solubility 
H2O: soluble
form 
turnings
color 
Orange
PH
4 (50g/l, H2O, 20℃)(slurry)
Water Solubility 
1 g/125 mL
Merck 
14,9921
Stability:
Stable. Incompatible with chlorine, chlorates, acids, alkali metals, interhalogens.
CAS DataBase Reference
1314-62-1(CAS DataBase Reference)
NIST Chemistry Reference
Vanadium(v) oxide(1314-62-1)
EPA Substance Registry System
Vanadium oxide (V2O5)(1314-62-1)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi,N,T,C,T+
Risk Statements  36/38-68-63-51/53-48/23-37-20/22-41-48/20-34-40-26/27/28
Safety Statements  26-61-45-38-36/37-36-36/37/39-23
RIDADR  UN 3289 6.1/PG 2
WGK Germany  3
RTECS  YW1355000
10
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  28253010
Hazardous Substances Data 1314-62-1(Hazardous Substances Data)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:
P201 Obtain special instructions before use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P405 Store locked up.
P501 Dispose of contents/container to..…

Vanadium pentoxide price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 204854 Vanadium(V) oxide 99.99% trace metals basis 1314-62-1 1g $39.2 2018-11-13 Buy
Sigma-Aldrich 204854 Vanadium(V) oxide 99.99% trace metals basis 1314-62-1 5g $105 2018-11-13 Buy
Alfa Aesar 010904 Vanadium(V) oxide 99.99% (metals basis) 1314-62-1 10g $126 2018-11-20 Buy
Alfa Aesar 010904 Vanadium(V) oxide 99.99% (metals basis) 1314-62-1 2g $45.1 2018-11-20 Buy
Strem Chemicals 93-2306 Vanadium(V) oxide, 98% 1314-62-1 100g $22 2018-11-13 Buy

Vanadium pentoxide Chemical Properties,Uses,Production

Physical properties

Brown-yellow orthorhombic crystals; density 3.35 g/cm3; melts at 670°C; decomposes at 1,800°C; slightly soluble in water, 0.8g/100 mL at 20°C; soluble in concentrated acids forming an orange-yellow solution; soluble in alkalies forming vanadates.

Uses

Vanadium pentoxide is the oxide form of vanadium. As an important vanadium compound, it is used as the major precursor to alloys of vanadium and is widely used as industrial catalyst. It can be used for the production of ferrovanadium and sulfuric acid. It can also catalyze the oxidation reaction of some anhydrides. It can also be used as a detector material in bolometer arrays for thermal imaging because of its thermal resistance. Vanadium pentoxide is also a kind of highly selective and stable ethanol sensor materials. Moreover, the microspheres of vanadium pentoxide formed during the synthesis of vanadium pentoxide nanorods in a mediated polyol process exhibit excellent electrochemical properties when used as the cathode material in a lithium-ion battery.
Other applications are in making yellow glass; as a depolarizer; as a developer in photography; inhibiting UV transmission in glass;and coloring ceram; as a mordant for dyeing and printing fabrics.

Preparation

Vanadium pentoxide is an intermediate in recovering vanadium from minerals (See Vanadium). Sodium polyvanadate, obtained as a red cake in one of the steps in extracting vanadium from its ores is calcined at 700°C in air to form a melt of vanadium pentoxide. Pentoxide is prepared in purified form by dissolving red cake in sodium carbonate solution followed by addition of an aqueous solution of ammonia and ammonium chloride. Ammonium metavanadate is precipitated which on decomposition at 320 to 430°C forms vanadium pentoxide.

References

Liu, J, et al. "Vanadium Pentoxide Nanobelts: Highly Selective and Stable Ethanol Sensor Materials." Advanced Materials 17.17(2005): 764-767.
Cao, A. M., et al. "Self-assembled vanadium pentoxide (V2O5) hollow microspheres from nanorods and their application in lithium-ion batteries." Angewandte Chemie 44.28(2005): 4391.
Moskalyk, R. R., and A. M. Alfantazi. "Processing of vanadium: a review." Minerals Engineering 16.9 (2003): 793-805.
Khorfan, S., A. Wahoud, and Y. Reda. "Recovery of vanadium pentoxide from spent catalyst used in the manufacture of sulphuric acid." Periodica Polytechnica. Chemical Engineering 45.2 (2001): 131.
Friedrichsen, Wilhelm, and Otto Goehre. "Supported catalysts containing vanadium pentoxide and titanium dioxide and their use for the production of carboxylic acids and carboxylic anhydrides." U.S. Patent No. 3,684,741. 15 Aug. 1972.
Karunagaran, B., et al. "Study of a pulsed laser deposited vanadium oxide based microbolometer array." Smart materials and structures 12.2 (2003): 188.

Description

Vanadium pentoxide is a yellow to red colour solid and is odourless. Vanadium pentoxide dust is the particulate form of a non-combustible, odourless, yellow-orange or dark grey crystalline solid.
On decomposition by heating, vanadium pentoxide produces toxic fumes. Vanadium is widely distributed in the Earth’s crust in a wide range of minerals and in fossil fuels. Vanadium pentoxide, the major commercial product of vanadium, is mainly used in the production of alloys with iron and aluminium. It is also used as an oxidation catalyst in the chemical industry and in a variety of minor applications.

Uses

As catalyst in the oxidation of SO2 to SO3, alcohol to acetaldehyde, etc.; for the manufacture of yellow glass; inhibiting ultraviolet light transmission in glass; depolarizer; as developer in photography; in form of ammonium vanadate as mordant in dyeing and printing fabrics and in manufacture of aniline black.

Chemical Properties

A yellow to rust-brown or orange crystals or powder. Slightly soluble in water and denser than water. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption.

Reactivity Profile

Vanadium pentoxide is acidic in many reactions. Hence, soluble in bases. [Kirk-Othmer]. Can react with ClF3, Li, peroxyformic acid and (Ca+S+H2O). Also reacts with strong acids.

Health Hazard

Probable oral lethal dose for humans is between 5 and 50 mg/kg or between 7 drops and 1 teaspoonful for a 70 kg (150 lb.) person. Toxicity is about the same magnitude as pentavalent arsenic. A person with chronic respiratory disease is at greater risk when exposed to this substance.

Fire Hazard

Container may explode in heat of fire. When heated to decomposition, Vanadium pentoxide emits acrid smoke and fumes of vanadium oxides. Material is not flammable but Vanadium pentoxide may increase the intensity of the fire when in contact with combustible materials. Avoid chlorine trifluoride; lithium; peroxyformic acid; and calcium, sulfur, water complexes. Hazardous polymerization may not occur.

Vanadium pentoxide Preparation Products And Raw materials

Raw materials

Preparation Products


Vanadium pentoxide Suppliers

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