Vanadium

Formula
V
Structure
Description
Silvery-whitish powder. Resists corrosion.
Uses
The principal use of vanadium is as an alloying addition to iron & steel, particularly in high strength steels &, to a lesser extent, in tool steels & castings.

Registry Numbers and Inventories.
CAS
7440-62-2
EC (EINECS/ELINCS)
231-171-1
RTECS
YW1355000
RTECS class
Tumorigen
UN (DOT)
3089
Merck
12,10053
Beilstein/Gmelin
49047 (G)
RCRA
P119; P120
Swiss Giftliste 1
G-9587
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
V2
Formula mass
50.94
Melting point, °C
1896
Boiling point, °C
3477
Vapor pressure, mmHg
76 (2897 C)
Density
6.015 g/cm3
Solubility in water
Insoluble
Thermal expansion
0.00000864/K
Heat of fusion
17.58 kJ/mol
Heat of vaporization
458.6 kj/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources. Do not touch or walk through spilled material. Stop leak if you can do it without risk.
Stability
Oxidizes readily above 660 C.
Incompatibilities
Reacts exothermically with compounds having active hydrogen atoms (such as acids and water) to form flammable hydrogen gas and caustic products.
Decomposition
oxic fumes are formed when this material is heated.

Fire.
Fire fighting
DO NOT USE WATER, FOAM OR carbon dioxide. Dousing metallic fires with water may generate hydrogen gas, an extremely dangerous explosion hazard, particularly if fire is in a confined environment. Use DRY sand, graphite powder, dry sodium chloride based extinguishers, G-1 or Met-L-X powder. Confining and smothering metal fires is preferable rather than applying water.
Fire potential
Moderate fire hazard, in the form of dust, when exposed to heat or flame, sparks.
Hazards
Oxides from metallic fires are a severe health hazard. Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: C 0.05 mg V/m3 15-min. Note: REL applies to all V cmpds except V metal and Vanadium carbide). {Vanadium fume}}NIOSH REL: C 0.05 mg V/m3 15-minute NIOSH IDLH: 35 mg/m3 (as V) {{V fume}} 35 mg/m3 (as V)
Poison_Class
-
Exposure effects
CNS depression may occur, usually with fatal doses. Sensorimotor hemiparesis and aphasia developed shortly after ingestion of ammonium metavanadate. CNS manifestations include tremors, headaches, tinnitus, and changes in mental status.
   Ingestion
Abdominal cramping, diarrhea, black stools, and green tongue developed in volunteers given ammonium vanadyl tartrate.
   Inhalation
Pulmonary irritation leading to pulmonary edema is a possible effect with high concentrations. Occupational asthma has been reported.
   Skin
Dermatitis, and green discoloration of the skin, may be seen with exposure to vanadium compounds.
   Eyes
Dry mouth, rhinitis, epistaxis, tracheitis, metallic taste, green tongue, and irritated eyes have been reported in workers exposed to vanadium compound dust.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3089
Response guide
Hazard class
4.1
Packing Group
II; III