GB -
CAS No. No. 7440-62-2
Molecular Formula V
molecular weight of 5,094

silver-white metal; the boiling point 3000 ° C; melting point 1820 ± 10 ° C; solubility : dissolve in nitric acid, aqua regia and concentrated sulfuric acid; density : relative density (water = 1) 5.87; Stability : stability; dangerous labeling; the main purposes : for the main system and alloy catalyst < / P>

2. The impact on the environment
a health hazard

pathways : inhaled, ingested.
health hazards : the onset of respiratory and nervous system lesions, skin damage. Vanadium metal toxicity is very low. Combine all vanadium (V salt) and the animal is toxic, toxic compounds with the valence increase and the increase solubility, such as vanadium pentoxide to highly toxic and can cause respiratory, nervous system, gastrointestinal and skin changes.

two, toxicology information and environmental behavior

toxicity : vanadium nontoxic form of toxic compounds before. Vanadium compounds are medium and high-toxic substances.
acute toxicity : vanadium compounds are medium and high-toxic substances.

vanadium in the environment to +2, +3, +4, +5 valence exist. With five state price for the most stable, with the majority of vanadium pentoxide and partial Vanadate form. This was followed by four at state, two, three salt water price instability, easily oxidized. Vanadium is gender material, low oxidation state of the compounds were mainly alkaline, high oxidation states of the main acidic compounds.

migration and transformation : vanadium in natural water in small concentrations, the general river from 0.01 to 20, with an average of rocket. Vanadium-containing seawater volume of 0.9 ~ 2.5ppb. Although water soluble vanadium content is very low, but the water particles containing vanadium volume is very high. Suspended solids deposition led to the end of vanadium in water quality movement and enable water to purify. Vanadium in the soil mainly VO3 - anion state of existence. The oxidizing soil, the higher the greater the basic, easy to form more barium VO3-ion. When soil acidity increases, VO3-ion easily transformed into more complex anion Complexes. They are easily colloidal clay and soil and humus fixed and lose activity vanadium in the soil of migratory weaker.

water concentration 0.8mg / L water smell, the concentration of 10 mg / L, wastewater denitrification inhibited

hazardous characteristics : its powder when the temperature, the fire will burn.
combustion (decomposition) product : vanadium oxide.

3. Scene emergency monitoring methods

4. Laboratory monitoring methods
AAS (GB/T14673-93, water)
pan-extraction reagent disappeared Method (GB/T15503-95, water)
AAS "Solid Waste Analysis Evaluation Manual," the China Environmental Monitoring terminus translated

5. Environmental standards
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 1mg/m3
China (to be issued) source water harmful substances maximum allowable concentration of 0. 05mg/L

6. Emergency treatment and disposal methods
a leakage contingency

cut off the fire source. Wearing masks and gloves. Recycling collection.

two protective measures

general without special protection, but the need to prevent coal dust.

three, and emergency measures

contact with the skin : contaminated clothing off with soap and water thoroughly washed.
eye contact : immediately open from top to bottom eyelid, mobile water rinse for 15 minutes. Medical treatment.
INHALED : from the scene to fresh air. Nasopharyngeal water rinsing the mouth of dust. Medical treatment. Fresh into
: wrongly seek treatment. Symptomatic treatment.

fire fighting methods : carbon dioxide, dry, sandy soil.