VANADIUM(IV) FLUORIDE Property

Melting point:

325 °C (dec.)(lit.)

Density 

2.975 g/mL at 25 °C(lit.)

solubility 

very soluble in H2O

form 

Powder

Specific Gravity

3.15

color 

Yellow to brown

Water Solubility 

Soluble in water (blue color), acetone (deep green color), and glacial acetic acid (blue-green color)

Sensitive 

Moisture Sensitive

crystal system

Monoclinic

Space group

P21/n

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.538	0.517	0.534	90	59.7	90	0.1283

Exposure limits

ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3; Ceiling 0.05 mg/m3

CAS DataBase Reference

10049-16-8(CAS DataBase Reference)

Safety

Hazard Codes 

T,Xi

Risk Statements 

23/24/25-34

Safety Statements 

22-26-36/37/39-45

RIDADR 

UN 3290 6.1/PG 2

WGK Germany 

3

Hazard Note 

Irritant

HazardClass 

8

PackingGroup 

II

HS Code 

2826199090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

VANADIUM(IV) FLUORIDE Chemical Properties,Usage,Production

Chemical Properties

green to brown powder

Uses

Vanadium(IV) fluoride is an important raw material and intermediate used in organic synthesis, pharmaceuticals and agrochemicals.

Production Methods

Freshly distilled, Dry Ice-cooled VCl4 (40 g) is added to 130 g of similarly cooled anhydrous HF contained in a reactor. A copper reflux condenser charged with a cooling mixture is then attached to the vessel, and the reaction mixture is allowed to warm slowly to 0°C. The mixture is then boiled for several hours until no further HCl evolves. The reflux condenser is then replaced by a descending condenser, and the HF is distilled off. The VF4 remaining in the reactor is freed of any traces of HF by passing a dry stream of nitrogen at 50°C. The yield is 97%, based on VCl4. The product may be stored in sealed iron or copper containers.